ALLMERICA FINANCIAL CORP
S-4, 1997-06-16
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE  , 1997
 
                                                               FILE NO. 333-
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
 
                               ---------------
 
                                   FORM S-4
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
 
                               ---------------
 
                        ALLMERICA FINANCIAL CORPORATION
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
        DELAWARE                     6331                    04-3263626
       (STATE OF              (PRIMARY STANDARD           (I.R.S. EMPLOYER
     INCORPORATION)               INDUSTRIAL            IDENTIFICATION NO.)
                             CLASSIFICATION CODE
                                   NUMBER)
 
                               ---------------
 
                              AFC CAPITAL TRUST I
          (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS DECLARATION)
 
              DELAWARE                                04-6828272
       (STATE OF ORGANIZATION)                     (I.R.S. EMPLOYER
                                                  IDENTIFICATION NO.)
 
                               ---------------
 
                              440 LINCOLN STREET
                        WORCESTER, MASSACHUSETTS 01653
                                (508) 855-1000
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                               ---------------
 
                              JOHN F. KELLY, ESQ.
                              440 LINCOLN STREET
                        WORCESTER, MASSACHUSETTS 01653
                                (508) 855-1000
(NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
 
                               ---------------
 
                                WITH COPIES TO:
 
                            LAUREN I. NORTON, ESQ.
                                 ROPES & GRAY
                            ONE INTERNATIONAL PLACE
                          BOSTON, MASSACHUSETTS 02110
                                (617) 951-7000
 
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement.
 
  If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance
with General Instruction G, check the following box: [_]
 
                        CALCULATION OF REGISTRATION FEE
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                    PROPOSED
                                                     MAXIMUM
   TITLE OF EACH CLASS OF       AMOUNT TO BE     OFFERING PRICE       AMOUNT OF
 SECURITIES TO BE REGISTERED   REGISTERED (1)     PER UNIT (2)    REGISTRATION FEE
- ----------------------------------------------------------------------------------
 <S>                          <C>               <C>               <C>
 Series B Capital
  Securities of AFC Capital
  Trust I.................      $300,000,000           100%          $90,909.00
- ----------------------------------------------------------------------------------
 Series B Junior
  Subordinated Deferrable
  Interest Debentures of
  Allmerica Financial
  Corporation.............           (3)               (3)
- ----------------------------------------------------------------------------------
 Series B Capital
  Securities Guarantee of
  Allmerica Financial
  Corporation.............           (4)               (4)
- ----------------------------------------------------------------------------------
 Total....................      $300,000,000           100%          $90,909.00
</TABLE>
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
(1) Such amount represents the liquidation amount of the AFC Capital Trust I
    Series B Capital Securities to be exchanged hereunder and the principal
    amount of Junior Subordinated Debentures that may be distributed to
    holders of such Capital Securities upon any liquidation of AFC Capital
    Trust I.
(2) Estimated solely for the purpose of computing the registration fee.
(3) No separate consideration will be received for the Series B Junior
    Subordinated Deferrable Interest Debentures of Allmerica Financial
    Corporation distributed upon any liquidation of AFC Capital Trust I.
(4) No separate consideration will be received for the Series B Capital
    Securities Guarantee.
 
  THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(A) OF THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THE
REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION,
ACTING PURSUANT TO SAID SECTION 8(A) MAY DETERMINE.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                    SUBJECT TO COMPLETION, DATED     , 1997
 
PROSPECTUS
 
                              AFC CAPITAL TRUST I
 
                             OFFER TO EXCHANGE ITS
                      8.207% SERIES B CAPITAL SECURITIES
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                      FOR ANY AND ALL OF ITS OUTSTANDING
                      8.207% SERIES A CAPITAL SECURITIES
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
              UNCONDITIONALLY GUARANTEED, AS DESCRIBED HEREIN, BY
 
                        ALLMERICA FINANCIAL CORPORATION
 
                               ----------------
 
  THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK
CITY TIME, ON    , 1997 UNLESS EXTENDED.
 
                               ----------------
 
  AFC Capital Trust I, a statutory business trust created under the laws of
the State of Delaware (the "Trust"), hereby offers, upon the terms and subject
to the conditions set forth in this Prospectus (as the same may be amended or
supplemented from time to time, the "Prospectus") and in the accompanying
Letter of Transmittal (the "Letter of Transmittal," which together with the
Prospectus constitutes the "Exchange Offer"), to exchange up to $300,000,000
aggregate Liquidation Amount of its 8.207% Series B Capital Securities (the
"New Capital Securities") which have been registered under the Securities Act
of 1933, as amended (the "Securities Act"), pursuant to a Registration
Statement (as defined herein) of which this Prospectus constitutes a part, for
a like Liquidation Amount of its outstanding 8.207% Series A Capital
Securities (the "Old Capital Securities"), of which $300,000,000 aggregate
Liquidation Amount is outstanding. Pursuant to the Exchange Offer, Allmerica
Financial Corporation, a Delaware corporation (the "Company"), is also
offering to exchange (i) its guarantee of payments of cash distributions and
payments on liquidation of the Trust or redemption of the Old Capital
Securities (the "Old Guarantee") for a like guarantee in respect of the New
Capital Securities (the "New Guarantee") and (ii) all of its 8.207% Series A
Junior Subordinated Deferrable Interest Debentures due February 3, 2027 (the
"Old Junior Subordinated Debentures") for a like aggregate principal amount of
its 8.207% Series B Junior Subordinated Deferrable Interest Debentures due
February 3, 2027 (the "New Junior Subordinated Debentures"), which New
Guarantee and New Junior Subordinated Debentures have also been registered
under the Securities Act. The Old Capital Securities, the Old Guarantee and
the Old Junior Subordinated Debentures are collectively referred to herein as
the "Old Securities" and the New Capital Securities, the New Guarantee and the
New Junior Subordinated Debentures are collectively referred to herein as the
"New Securities."
 
  The terms of the New Securities are identical in all material respects to
the respective terms of the Old Securities, except that (i) the New Securities
have been registered under the Securities Act and therefore
 
                                              (Continued on the following page)
 
                               ----------------
 
  This Prospectus and the Letter of Transmittal are first being mailed to all
holders of Old Capital Securities on      , 1997.
 
                               ----------------
 
  SEE "RISK FACTORS" COMMENCING ON PAGE   FOR CERTAIN INFORMATION THAT SHOULD
BE CONSIDERED BY HOLDERS IN DECIDING WHETHER TO TENDER OLD CAPITAL SECURITIES
IN THE EXCHANGE OFFER.
 
                               ----------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED OR DISAPPROVED BY  THE SECURITIES AND
 EXCHANGE  COMMISSION  OR  ANY  STATE   SECURITIES  COMMISSION  NOR  HAS  THE
  SECURITIES AND  EXCHANGE  COMMISSION  OR ANY  STATE  SECURITIES COMMISSION
  PASSED   UPON  THE   ACCURACY  OR   ADEQUACY  OF   THIS  PROSPECTUS.   ANY
   REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
                               ----------------
 
                  The date of this Prospectus is      , 1997.
<PAGE>
 
(Continued from previous page)
 
generally will not be subject to certain restrictions on transfer applicable
to the Old Securities, (ii) the New Capital Securities will not contain the
$100,000 minimum principal amount transfer restriction and (v) the New Junior
Subordinated Debentures will not provide for any liquidated damages thereon.
See "Description of New Capital Securities," "Description of New Junior
Subordinated Debentures" and "Description of Old Securities." The New Capital
Securities are being offered for exchange in order to satisfy certain
obligations of the Company and the Trust under the Registration Rights
Agreement dated as of February 3, 1997 (the "Registration Rights Agreement")
among the Company, the Trust and the Initial Purchasers (as defined herein).
In the event that the Exchange Offer is consummated, any Old Capital
Securities which remain outstanding after consummation of the Exchange Offer
and the New Capital Securities issued in the Exchange Offer will vote together
as a single class for purposes of determining whether holders of the requisite
percentage in outstanding Liquidation Amount thereof have taken certain
actions or exercised outstanding Liquidation Amount thereof have taken certain
actions or exercised certain rights under the Declaration.
 
  The New Capital Securities and the Old Capital Securities (collectively, the
"Capital Securities") represent undivided beneficial interests in the assets
of the Trust. The Company is the owner of all of the beneficial interests
represented by common securities of the Trust (the "Common Securities"). The
Chase Manhattan Bank is the Property Trustee of the Trust. The Trust exists
for the sole purpose of issuing the Trust Securities and investing the
proceeds thereof in the Junior Subordinated Debentures (as defined herein).
The Junior Subordinated Debentures will mature on February 3, 2027 (the
"Stated Maturity Date"). The Capital Securities will have a preference over
the Common Securities under certain circumstances with respect to cash
distributions and amounts payable on liquidation, redemption or otherwise. See
"Description of New Capital Securities--Subordination of Common Securities."
 
  As used herein, (i) the "Indenture" means that Indenture, dated as of
February 3, 1997, as amended and supplemented from time to time, between the
Company and The Chase Manhattan Bank, as Debenture Trustee (the "Debenture
Trustee"), (ii) the "Declaration" means the Amended and Restated Declaration
of Trust relating to the Trust among the Company, as Sponsor, The Chase
Manhattan Bank, as Property Trustee (the "Property Trustee"), Chase Manhattan
Bank Delaware, as Delaware Trustee (the "Delaware Trustee"), the
Administrative Trustees named therein (collectively, with the Property Trustee
and Delaware Trustee, the "Issuer Trustees"), and the holders from time to
time of the undivided beneficial interests in the assets of the Trust. In
addition, as the context may require, unless otherwise expressly stated, (i)
the term "Capital Securities" includes the Old Capital Securities and the New
Capital Securities, (ii) the term "Trust Securities" includes the Capital
Securities and the Common Securities, (iii) the term "Junior Subordinated
Debentures" includes the Old Junior Subordinated Debentures and the New Junior
Subordinated Debentures and (iv) the term "Guarantee" includes the Old
Guarantee and the New Guarantee.
 
  Holders of New Capital Securities will be entitled to receive preferential
cumulative cash distributions arising from the payment of interest on the
Junior Subordinated Debentures, accruing from February 3, 1997, and payable
semi-annually in arrears on August 15 and February 15 of each year, commencing
August 15, 1997, at the annual rate of 8.207% of the Liquidation Amount of
$1,000 per New Capital Security ("Distributions"). The Company will have the
right to defer payments of interest on the Junior Subordinated Debentures at
any time and from time to time for a period not exceeding 10 consecutive semi-
annual periods with respect to each deferral period (each, an "Extension
Period), subject to the requirements set forth in the Indenture. If and for so
long as interest payments on the Junior Subordinated Debentures are so
deferred, Distributions on the Trust Securities will also be deferred and the
Company will not be permitted, subject to certain exceptions described herein,
to declare or pay any cash distributions with respect to the Company's capital
stock (which includes common and preferred stock) or to make any payment with
respect to debt securities of the Company that rank pari passu with or junior
to the Junior Subordinated Debentures. During an Extension Period, interest on
the Junior Subordinated Debentures will continue to accrue (and the amount of
Distributions to which holders of the Trust Securities are entitled will
accumulate) at the rate of 8.207% per annum, compounded semi-annually, and
 
                                       2
<PAGE>
 
holders of Trust Securities will be required to accrue interest income for
United States federal income tax purposes prior to the receipt of cash
attributable to such income. See "Description of New Junior Subordinated
Debentures--Option to Extend Interest Payment Date" and "Certain Federal
Income Tax Considerations--Interest Income and Original Issue Discount."
 
  Through the Guarantee, the guarantee agreement of the Company relating to
the Common Securities (the "Common Guarantee"), the Declaration, the Junior
Subordinated Debentures and the Indenture, taken together, the Company has
guaranteed or will guarantee, as the case may be, fully, irrevocably and
unconditionally, all of the Trust's obligations under the Trust Securities.
See "Relationship Among the New Capital Securities, the New Junior
Subordinated Debentures and the New Guarantee--Full and Unconditional
Guarantee." The Old Guarantee and the Common Guarantee guarantees and the New
Guarantee will guarantee, payments of Distributions and payments on
liquidation or redemption of the Trust Securities, but in each case only to
the extent that the Trust holds funds on hand legally available therefor and
has failed to make such payments, as described herein. See "Description of New
Securities--Description of New Guarantee." If the Company fails to make a
required payment on the Junior Subordinated Debentures, the Trust will not
have sufficient funds to make the related payments, including Distributions,
on the Trust Securities. The Guarantee and the Common Guarantee will not cover
any such payment when the Trust does not have sufficient funds on hand legally
available therefor. In such event, a holder of Capital Securities may
institute a legal proceeding directly against the Company to enforce its
rights in respect of such payment. See "Description of New Junior Subordinated
Debentures--Enforcement of Certain Rights By Holders of New Capital
Securities." The obligations of the Company under the Guarantee, the Common
Guarantee and the Junior Subordinated Debentures will be subordinate and
junior in right of payment to all Senior Indebtedness of the Company to the
extent and in the manner set forth in the Indenture and the Guarantees,
respectively (as defined in "Description of New Securities--Description of New
Junior Subordinated Debentures--Subordination"). In addition, because the
Company is a holding company, the Junior Subordinated Debentures and the
Guarantee effectively will be subordinated to all existing and future
liabilities of the Company's subsidiaries.
 
  The Trust is making the Exchange Offer of the New Capital Securities in
reliance on the position of the staff of the Division of Corporation Finance
of the Securities and Exchange Commission (the "Commission") as set forth in
certain interpretive letters addressed to third parties in other transactions.
However, neither the Company nor the Trust has sought its own interpretive
letter and there can be no assurance that the staff of the Division of
Corporation Finance of the Commission would make a similar determination with
respect to the Exchange Offer as it has in such interpretive letters to third
parties. Based on these interpretations by the staff of the Division of
Corporation Finance of the commission, and subject to the two immediately
following sentences, the Company and the Trust believe that New Capital
Securities issued pursuant to the Exchange Offer in exchange for Old Capital
Securities may be offered for resale, resold and otherwise transferred by a
holder thereof (other than a holder who is a broker-dealer) without further
compliance with the registration and prospectus delivery requirements of the
Securities Act, provided that such New Capital Securities are acquired in the
ordinary course of such holder's business and that such holder is not
participating, and has no arrangement or understanding with any person to
participate, in a distribution (within the meaning of the Securities Act) of
such New Capital Securities. However, any holder of Old Capital Securities who
is an "affiliate" of the Company or the Trust or who intends to participate in
the Exchange Offer for the purpose of distributing New Capital Securities, or
any broker-dealer who purchased Old Capital Securities from the Trust for
resale pursuant to Rule 144A under the Securities Act, (a) will not be able to
rely on the interpretations of the staff of the Division of Corporation
Finance of the Commission set forth in the above-mentioned interpretive
letters, (b) will not be permitted or entitled to tender such Old Capital
Securities in the Exchange Offer and (c) must comply with the registration and
prospectus delivery requirements of the Securities Act in connection with any
sale or other transfer of such Old Capital Securities (other than pursuant to
the Exchange Offer) unless such sale is made pursuant to an exemption from
such requirements. In addition, as described below, if any broker-dealer holds
Old Capital Securities acquired for its own account as a result of market-
making or other trading activities and exchanges such Old Capital Securities
for New Capital Securities, the Securities Act in connection with any resales
of such New Capital Securities.
 
                                       3
<PAGE>
 
  Each holder of Old Capital Securities who wishes to exchange Old Capital
Securities for New Capital Securities in the Exchange Offer will be required
to represent that (i) it is not an "affiliate" of the Company or the Trust,
(ii) any New Capital Securities to be received by it are being acquired in the
ordinary course of its business, (iii) it has no arrangement or understanding
with any person to participate in a distribution (within the meaning of the
Securities Act) of such New Capital Securities, and (iv) if such holder is not
a broker-dealer, such holder is not engaged in, and does not intend to engage
in, a distribution (within the meaning of the Securities Act) of such New
Capital Securities. In addition, the Company and the Trust may require such
holder, as a condition to such holder's eligibility to participate in the
Exchange as a condition to such holder's eligibility to participate in the
Exchange Offer, to furnish to the Company and the Trust (or an agent thereof)
in writing information as to the number of "beneficial owners" (within the
meaning of Rule 13d-3 under the Securities Exchange Act of 1934, as amended
(the "Exchange Act")) on behalf of whom such holder holds the Capital
Securities to be exchanged in the Exchange Offer. Each broker-dealer that
receives New Capital Securities for its own account pursuant to the Exchange
Offer must acknowledge that it acquired the Old Capital Securities for its own
account as the result of market-making activities or other trading activities
and must agree that it will deliver a prospectus meeting the requirements of
the Securities Act in connection with any resale of such New Capital
Securities. The Letter of Transmittal states that, by so acknowledging and by
delivering a prospectus a broker-dealer will not be deemed to admit that it is
an "underwriter" within the meaning of the Securities Act. Based on the
position taken by the staff of the Division of Corporation Finance of the
Commission in the interpretive letters referred to above, the Company and the
Trust believe that broker-dealers who acquired Old Capital Securities for
their own accounts, as a result of market-making activities or other trading
activities ("Participating Broker-Dealers"), may fulfill their prospectus
delivery requirements with respect to the New Capital Securities received upon
exchange of such Old Capital Securities (other than Old Capital Securities
which represent an unsold allotment from the original sale of the Old Capital
Securities) with a prospectus meeting the requirements of the Securities act,
which may be the prospectus prepared for an exchange offer so long as it
contains a description of the plan of distribution with respect to the resale
of such New Capital Securities. Accordingly, this Prospectus, as it may be
amended or supplemented from time to time, may be used by a Participating
Broker-Dealer during the period referred to below in connection with resales
of New Capital Securities received in exchange for Old Capital Securities
where such Old Capital Securities were acquired by such Participating Broker-
Dealer for its own account as a result of market-making or other trading
activities. Subject to certain provisions set forth in the Registration Rights
Agreement, the Company and the Trust have agreed that this Prospectus, as it
may be amended or supplemented from time to time, may be used by a
Participating Broker-Dealer in connection with resales of such New Capital
Securities for a period ending 90 days after the Expiration Date (as defined
herein) (subject to extension under certain limited circumstances described
below) or, if earlier, when all such New Capital Securities have been disposed
of by such Participating Broker-Dealer. See "Plan of Distribution." However, a
Participating Broker-Dealer who intends to use this Prospectus in connection
with the resale of New Capital Securities received in exchange for Old Capital
Securities pursuant to the Exchange Offer must notify the Company or the
Trust, or cause the Company or the Trust to be notified, on or prior to the
Expiration Date, that it is a Participating Broker-Dealer. Such notice may be
given in the space provided for that purpose in the Letter of Transmittal or
may be delivered to the Exchange Agent at one of the addresses set forth
herein under "The Exchange Offer--Exchange Agent." Any Participating Broker-
Dealer who is an "affiliate" of the Company or the Trust may not rely on such
interpretive letters and must comply with the registration and prospectus
delivery requirements of the Securities Act in connection with any resale
transaction. See "The Exchange Offer--Resales of New Capital Securities."
 
  In that regard, each Participating Broker-Dealer who surrenders Old Capital
Securities pursuant to the Exchange Offer will be deemed to have agreed, by
execution of the Letter of Transmittal or delivery of an Agents' Message (as
defined herein), that, upon receipt of notice from the Company or the Trust of
the occurrence of any event or the discovery of any fact which makes any
statement contained or incorporated by reference in this Prospectus untrue in
any material respect or which causes this Prospectus to omit to state a
material fact necessary in order to make the statements contained or
incorporated by reference herein, in light of the circumstances under which
they were made, not misleading or of the occurrence of certain other events
specified in the Registration Rights Agreement, such Participating Broker-
Dealer will suspend the sale of New
 
                                       4
<PAGE>
 
Capital Securities (or the New Guarantee or the New Junior Subordinated
Debentures, as applicable) pursuant to this Prospectus until the Company or
the Trust has amended or supplemented this Prospectus to correct such
misstatement or omission and has furnished copies of the amended or
supplemented Prospectus to such Participating Broker-Dealer or the Company or
the Trust has given notice that the sale of the New Capital Securities (or the
New Guarantee or the New Junior Subordinated Debentures, as applicable) may be
resumed, as the case may be. If the Company or the Trust gives such notice to
suspend the sale of the New Capital Securities (or the New Guarantee or the
New Junior Subordinated Debentures, as applicable), it shall extend the 90-day
period referred to above during which Participating Broker-Dealers are
entitled to use this Prospectus in connection with the resale of New Capital
Securities by the number of days during the period from and including the date
of the giving of such notice to and including the date when Participating
Broker-Dealers shall have received copies of the amended or supplemented
Prospectus necessary to permit resales of the New Capital Securities or to and
including the date on which the Company or the Trust has given notice that the
sale of New Capital Securities (or the New Guarantee or the New Junior
Subordinated Debentures, as applicable) may be resumed, as the case may be.
 
  Prior to the Exchange Offer, there has been only a limited secondary market
and no public market for the Old Capital Securities. The New Capital
Securities will be a new issue of securities for which there currently is no
market. Although the Initial Purchasers have informed the Company and the
Trust that they each currently intend to make a market in the New Capital
Securities, they are not obligated to do so, and any such market making may be
discontinued at any time without notice. Accordingly, there can be no
assurance as to the development or liquidity of any market for the New Capital
Securities. The Company and the Trust currently do not intend to apply for
listing of the New Capital Securities on any securities exchange or for
inclusion in the NASDAQ Stock Market, the electronic securities market
operated by the National Association of Securities Dealers, Inc. ("NASDAQ").
 
  Any Old Capital Securities not tendered and accepted in the Exchange Offer
will remain outstanding and will be entitled to all the same rights and will
be subject to the same limitations applicable thereto under the Declaration
(except for those rights which terminate upon consummation of the Exchange
Offer). Following consummation of the Exchange Offer, the holders of Old
Capital Securities will continue to be subject to all of the existing
restrictions upon transfer thereof and neither the Company nor the Trust will
have any further obligation to such holders (other than under certain limited
circumstances) to provide for registration under the Securities Act of the Old
Capital Securities held by them. To the extent that Old Capital Securities are
tendered and accepted in the Exchange Offer, a holder's ability to sell
untendered Old Capital Securities could be adversely affected. See "Risk
Factors--Consequences of a Failure to Exchange Old Capital Securities."
 
  THIS PROSPECTUS AND THE RELATED LETTER OF TRANSMITTAL CONTAIN IMPORTANT
INFORMATION. HOLDERS OF OLD CAPITAL SECURITIES ARE URGED TO READ THIS
PROSPECTUS AND THE RELATED LETTER OF TRANSMITTAL CAREFULLY BEFORE DECIDING
WHETHER TO TENDER THEIR OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER.
 
  Old Capital Securities may be tendered for exchange on or prior to 5:00
p.m., New York City time, on      , 1997 (such time on such date being
hereinafter called the "Expiration Date"), unless the Exchange Offer is
extended by the Company or the Trust (in which case the term "Expiration Date"
shall mean the latest date and time to which the Exchange Offer is extended).
Tenders of Old Capital Securities may be withdrawn at any time on or prior to
the Expiration Date. The Exchange Offer is not conditioned upon any minimum
Liquidation Amount of Old Capital Securities being tendered for exchange.
However, the Exchange Offer is subject to certain events and conditions which
may be waived by the Company or the Trust and to the terms and provisions of
the Registration Rights Agreement. Old Capital Securities may be tendered in
whole or in part having an aggregate Liquidation Amount of not less than
$100,000 (100 Capital Securities) or any integral multiple of $1,000
Liquidation Amount (one Capital Security) in excess thereof. The Company has
agreed to pay all expenses of the Exchange Offer. See "The Exchange Offer--
Fees and Expenses." Holders of the Old
 
                                       5
<PAGE>
 
Capital Securities whose Old Capital Securities are accepted for exchange will
not receive Distributions on such Old Capital Securities and will be deemed to
have waived the right to receive any Distributions on such Old Capital
Securities accumulated from and after February 3, 1997. Accordingly, holders
of New Capital Securities as of the record date for the payment of
Distributions on August 15, 1997 will be entitled to receive Distributions
accumulated from and including February 3, 1997.
 
  Neither the Company nor the Trust will receive any cash proceeds from the
issuance of the New Capital Securities offered hereby. No dealer-manager is
being used in connection with this Exchange Offer. See "Use of Proceeds" and
"Plan of Distribution."
 
                               ----------------
 
  THIS PROSPECTUS INCORPORATES DOCUMENTS BY REFERENCE WHICH ARE NOT PRESENTED
HEREIN OR DELIVERED HEREWITH. THESE DOCUMENTS ARE AVAILABLE WITHOUT CHARGE
UPON WRITTEN OR ORAL REQUEST FROM ALLMERICA FINANCIAL CORPORATION, 440 LINCOLN
STREET, WORCESTER, MASSACHUSETTS 01653, ATTENTION: CHIEF FINANCIAL OFFICER,
TELEPHONE NUMBER (508) 855-1000. IN ORDER TO ENSURE TIMELY DELIVERY OF SUCH
DOCUMENTS, ANY REQUEST SHOULD BE MADE BY [FIVE DAYS PRIOR TO THE EXPIRATION
DATE].
 
                               ----------------
 
  NO DEALER, SALESPERSON OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN OR
INCORPORATED BY REFERENCE IN THIS PROSPECTUS IN CONNECTION WITH THIS EXCHANGE
OFFER AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE
RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR THE TRUST. NEITHER THE
DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL UNDER ANY
CIRCUMSTANCE CREATE AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
AFFAIRS OF THE COMPANY OR THE TRUST SINCE THE DATE HEREOF. THIS PROSPECTUS
DOES NOT CONSTITUTE AN OFFER OR A SOLICITATION BY ANYONE IN ANY JURISDICTION
IN WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH THE PERSON
MAKING SUCH OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO OR ANYONE TO WHOM
IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.
 
                               ----------------
 
  NOTICE TO NEW HAMPSHIRE RESIDENTS: NEITHER THE FACT THAT A REGISTRATION
STATEMENT OR AN APPLICATION FOR A LICENSE HAS BEEN FILED WITH THE STATE OF NEW
HAMPSHIRE NOR THE FACT THAT A SECURITY IS EFFECTIVELY REGISTERED OR A PERSON
IS LICENSED IN THE STATE OF NEW HAMPSHIRE CONSTITUTES A FINDING BY THE
SECRETARY OF STATE OF NEW HAMPSHIRE THAT ANY DOCUMENT FILED UNDER RSA 421-B IS
TRUE, COMPLETE AND NOT MISLEADING. NEITHER ANY SUCH FACT NOR THE FACT THAT AN
EXEMPTION OR EXCEPTION IS AVAILABLE FOR A SECURITY OR A TRANSACTION MEANS THAT
THE SECRETARY OF STATE HAS PASSED IN ANY WAY UPON THE MERITS OR QUALIFICATIONS
OF, OR RECOMMENDED OR GIVEN APPROVAL TO, ANY PERSON, SECURITY, OR TRANSACTION.
IT IS UNLAWFUL TO MAKE, OR CAUSE TO BE MADE, TO ANY PROSPECTIVE PURCHASER,
CUSTOMER OR CLIENT, ANY REPRESENTATION INCONSISTENT WITH THE PROVISIONS OF
THIS PARAGRAPH.
 
                               ----------------
 
  FOR NORTH CAROLINA INVESTORS: THESE SECURITIES HAVE NOT BEEN APPROVED OR
DISAPPROVED BY THE COMMISSIONER OF INSURANCE FOR THE STATE OF NORTH CAROLINA,
NOR HAS THE COMMISSIONER PASSED ON THE ADEQUACY OF THIS PROSPECTUS.
 
                                       6
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                         <C>
Available Information.....................................................    7
Incorporation of Certain Documents by Reference...........................    8
Summary...................................................................    9
Risk Factors..............................................................   16
The Company...............................................................   22
Use of Proceeds...........................................................   25
Consolidated Ratio of Earnings to Fixed Charges...........................   25
Capitalization............................................................   26
Selected Consolidated Financial Data of the Company.......................   27
Unaudited Pro Forma Condensed Consolidated Financial Information..........   30
Unaudited Pro Forma Condensed Consolidated Statement of Income Three
 Months Ended March 31, 1997..............................................   31
Unaudited Pro Forma Condensed Consolidated Statement of Income Year Ended
 December 31, 1996........................................................   32
The Trust.................................................................   37
The Exchange Offer........................................................   37
Description of New Capital Securities.....................................   46
Description of New Junior Subordinated Debentures.........................   56
Description of New Guarantee..............................................   65
Description of Old Securities.............................................   68
Relationship Among the New Capital Securities, the New Junior Subordinated
 Debentures and the New Guarantee.........................................   69
Certain Federal Income Tax Considerations.................................   70
ERISA Considerations......................................................   73
Plan of Distribution......................................................   74
Legal Matters.............................................................   75
Experts...................................................................   75
</TABLE>
 
                               ----------------
 
                             AVAILABLE INFORMATION
 
  The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and, in accordance
therewith, files reports and other information with the Securities and
Exchange Commission (the "Commission"). Such reports and other information
concerning the Company can be inspected and copied at the public reference
facilities maintained by the Commission at 450 Fifth Street, N.W., Room 1024,
Washington, D.C. 20549, and at the Commission's Regional Offices at Seven
World Trade Center, 13th Floor, New York, New York 10048, and Citicorp Center,
500 West Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of such
material can be obtained from the Public Reference Room of the Commission at
450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549, at prescribed
rates. The Commission maintains a Web site that contains reports, proxy and
information statements and other materials that are filed through the
Commission's Electronic Data Gathering Analysis and Retrieval System. The Web
site can be accessed at http://www.sec.gov. In addition, similar information
concerning the Company can be inspected at NYSE, 20 Broad Street, New York,
New York 10005.
 
  No separate financial statements of the Trust have been included herein. The
Company does not consider that such financial statements would be material to
holders of the Capital Securities because (i) all of the voting securities of
the Trust are and will be owned, directly or indirectly, by the Company, a
reporting company under the Exchange Act, (ii) the Trust has no independent
operations but exists for the sole purpose of issuing securities representing
undivided beneficial interests in the assets of the Trust and investing the
proceeds thereof in Junior Subordinated Debentures issued by the Company, and
(iii) the Company's obligations described herein to provide certain
indemnities in respect of, and be responsible for, certain costs, expenses,
debts and liabilities of the Trust under the Indenture and any supplemental
indenture thereto and pursuant to the Declaration, the
 
                                       7
<PAGE>
 
Guarantee, the New Junior Subordinated Debentures purchased by the Trust and
the related Indenture, taken together, constitute a full and unconditional
guarantee of payments due on the Capital Securities. See "Relationship Among
the New Capital Securities, the New Junior Subordinated Debentures and the New
Guarantee." In addition, the Company does not expect that the Trust will file
reports, proxy statements or other information under the Exchange Act with the
Commission.
 
  This Prospectus constitutes a part of a registration statement on Form S-4
(the "Registration Statement") filed by the Company and the Trust with the
Commission under the Securities Act. This Prospectus does not contain all the
information set forth in the Registration Statement, certain parts of which
are omitted in accordance with the rules and regulations of the Commission,
and reference is hereby made to the Registration Statement and to the exhibits
relating thereto for further information with respect to the Company, the
Trust and the New Securities. Any statements contained herein concerning the
provisions of any document are not necessarily complete, and, in each
instance, reference is made to the copy of such document filed as an exhibit
to the Registration Statement or otherwise filed with the Commission. Each
such statement is qualified in its entirety by such reference.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
  The following documents previously or simultaneously filed by the Company
with the Securities and Exchange Commission (the "Commission") (File No. 1-
13754) are incorporated herein by reference:
 
  (a) The Company's Annual Report on Form 10-K for the fiscal year ended
December 31, 1996;
 
  (b) The Company's Annual Report on Form 10-K/A for the fiscal year ended
December 31, 1996;
 
  (c) The Company's Quarterly Report on Form 10-Q for the fiscal quarter ended
March 31, 1997; and
 
  (d) The Company's Current Reports on Form 8-K dated February 5, 1997,
February 19, 1997, and April 15, 1997.
 
  All documents filed by the Company pursuant to Section 13(a), 13(c), 14 or
15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")
after the date of this Prospectus and prior to the termination of the offering
made hereby shall be incorporated by reference into this Prospectus and shall
be deemed to be a part of this Prospectus from the date of filing of such
documents. See "Available Information." Any statement contained in a document
incorporated by reference herein shall be deemed to be modified or superseded
to the extent that a statement contained in this Prospectus or any supplement
thereto or in any other subsequently filed incorporated document, modifies or
supersedes such statement. Any statement so modified or superseded shall not
be deemed, except as so modified or superseded, to constitute a part of this
Prospectus.
 
  As used herein, the terms "Prospectus" and "herein" mean this Prospectus,
including the documents incorporated or deemed to be incorporated herein by
reference, as the same may be amended, supplemented or otherwise modified from
time to time. Statements contained in this Prospectus as to the contents of
any contract or other document referred to herein do not purport to be
complete, and where reference is made to the particular provisions of such
contract or other document, such provisions are qualified in all respects by
reference to all of the provisions of such contract or other document. The
Company will provide, upon written or oral request, without charge, to each
person to whom a copy of this Prospectus has been delivered, a copy of any or
all of the documents which have been or may be incorporated in this Prospectus
by reference, other than certain exhibits to such documents. Requests for such
copies should be directed to: Allmerica Financial Corporation, 440 Lincoln
Street, Worcester, Massachusetts 01653 Attention: Chief Financial Officer.
 
                                       8
<PAGE>
 
                                    SUMMARY
 
  The following summary is qualified in its entirety by reference to the
detailed information appearing elsewhere in this Prospectus.
 
                                  THE COMPANY
 
  The Company is the holding company for a diversified group of insurance and
financial services companies with total assets, as of March 31, 1997 of $19.6
billion. The Company, through its subsidiaries, operates in two fundamental
areas: retirement and asset management and risk management. The Company's
retirement and asset management segments offer annuities, variable life
insurance, full-service retirement savings products and investment management
services to retail and institutional clients. The Company's risk management
segments underwrite personal and commercial property and casualty insurance in
five major lines of business: personal automobile, homeowners, commercial
automobile, workers compensation and commercial multiple peril.
 
  The Company is a Delaware corporation incorporated in 1995. Its executive
offices are located at 440 Lincoln Street, Worcester, Massachusetts 01653
(telephone number (508) 855-1000).
 
                                   THE TRUST
 
  The Trust is a statutory business trust formed under Delaware law pursuant to
(i) the Declaration executed by the Company, as Sponsor, The Chase Manhattan
Bank, as Property Trustee, Chase Manhattan Bank Delaware, as Delaware Trustee
and the individual Administrative Trustees named therein, and (ii) the filing
of a certificate of trust with the Delaware Secretary of State on January 24,
1997. The Trust's business and affairs are conducted by the Issuer Trustees:
the Property Trustee, the Delaware Trustee and the three individual
Administrative Trustees who are employees or officers of or affiliated with the
Company. The Trust exists for the exclusive purposes of (i) issuing and selling
the Trust Securities, (ii) using the proceeds from the sale of the Trust
Securities to acquire the Junior Subordinated Debentures issued by the Company
and (iii) engaging in only those other activities necessary, advisable or
incidental thereto (such as registering the transfer of the Trust Securities).
Accordingly, the Junior Subordinated Debentures are and will be the sole assets
of the Trust, and payments under the Junior Subordinated Debentures will be the
sole revenue of the Trust. All of the Common Securities are and will be owned
by the Company.
 
                              RECENT DEVELOPMENTS
 
  The Company expects to consummate the merger (the "Merger") of its wholly
owned subsidiary APY Acquisition, Inc. ("Merger Sub") with and into Allmerica
Property & Casualty Companies, Inc. ("Allmerica P&C") on or about July 16,
1997. The Company currently owns, through its wholly owned subsidiaries,
approximately 60% of the outstanding common stock of Allmerica P&C. As a result
of the Merger, Allmerica P&C will become a wholly owned subsidiary of the
Company. The Company is pursuing the Merger in order to, among other things,
(i) increase the proportion of its earnings from Allmerica P&C's property and
casualty operations, which are a key element of the Company's future operations
and strategy, (ii) create a simplified corporate structure for the Company,
allowing it greater efficiency and flexibility in its utilization of capital
and (iii) provide the Company with certain administrative cost savings. See
"The Company--Recent Developments."
 
                                       9
<PAGE>
 
 
                               THE EXCHANGE OFFER
 
The Exchange Offer..........  Up to $300,000,000 aggregate Liquidation Amount
                              of New Capital Securities are being offered in
                              exchange for a like aggregate Liquidation Amount
                              of Old Capital Securities. Old Capital Securities
                              may be tendered for exchange in whole or in part
                              in a Liquidation Amount of $100,000 (100 Capital
                              Securities) or any integral multiple of $1,000
                              (one Capital Security) in excess thereof. The
                              Company and the Trust are making the Exchange
                              Offer in order to satisfy their obligations under
                              the Registration Rights Agreement relating to the
                              Old Capital Securities. For a description of the
                              procedures for tendering Old Capital Securities,
                              see "The Exchange Offer--Procedures for Tendering
                              Old Capital Securities."
 
Expiration Date.............  5:00 p.m., New York City time, on     , 1997,
                              unless the Exchange Offer is extended by the
                              Company or the Trust (in which case the
                              Expiration Date will be the latest date and time
                              to which the Exchange Offer is extended). See
                              "The Exchange Offer--Terms of the Exchange
                              Offer."
 
Conditions to the Exchange    The Exchange Offer is subject to certain
 Offer......................  conditions, which may be waived by the Company
                              and the Trust in their sole discretion. The
                              Exchange Offer is not conditioned upon any
                              minimum Liquidation Amount of Old Capital
                              Securities being tendered. See "The Exchange
                              Offer--Conditions to the Exchange Offer."
 
Terms of the Exchange         The Company and the Trust reserve the right in
 Offer......................  their sole and absolute discretion, subject to
                              applicable law, at any time and from time to
                              time, to (i) delay the acceptance of the Old
                              Capital Securities for exchange, (ii) terminate
                              the Exchange Offer if certain specified
                              conditions have not been satisfied, (iii) extend
                              the Expiration Date of the Exchange Offer and
                              retain all Old Capital Securities tendered
                              pursuant to the Exchange Offer, subject, however,
                              to the right of holders of Old Capital Securities
                              to withdraw their tendered Old Capital
                              Securities, or (iv) to waive any condition or
                              otherwise amend the terms of the Exchange Offer
                              in any respect. See "The Exchange Offer--Terms of
                              the Exchange Offer."
 
Withdrawal Rights...........  Tenders of Old Capital Securities may be
                              withdrawn at any time on or prior to the
                              Expiration Date by delivering a written notice of
                              such withdrawal to the Exchange Agent in
                              conformity with certain procedures set forth
                              below under "The Exchange Offer--Withdrawal
                              Rights."
 
Procedures for Tendering
 Old Capital Securities.....
                              Tendering holders of Old Capital Securities must
                              complete and sign a Letter of Transmittal in
                              accordance with the instructions contained
                              therein and forward the same by mail, facsimile
                              or hand delivery, together with any other
                              required documents, to the Exchange Agent, either
                              with the Old Capital Securities to be tendered or
                              in compliance with the specified procedures for
                              guaranteed delivery of
 
                                       10
<PAGE>
 
                              Old Capital Securities. Certain brokers, dealers,
                              commercial banks, trust companies and other
                              nominees may also effect tenders by book-entry
                              transfer, including an Agent's Message in lieu of
                              a Letter of Transmittal. Holders of Old Capital
                              Securities registered in the name of a broker,
                              dealer, commercial bank, trust company or other
                              nominee are urged to contact such person promptly
                              if they wish to tender Old Capital Securities
                              pursuant to the Exchange Offer. See "The Exchange
                              Offer--Procedures for Tendering Old Capital
                              Securities."
 
                              Letters of Transmittal and certificates
                              representing Old Capital Securities should not be
                              sent to the Company or the Trust. Such documents
                              should only be sent to the Exchange Agent.
 
Resales of New Capital        The Company and the Trust are making the Exchange
 Securities.................  Offer in reliance on the position of the staff of
                              the Division of Corporation Finance of the
                              Commission as set forth in certain interpretive
                              letters addressed to third parties in other
                              transactions. However, neither the Company nor
                              the Trust has sought its own interpretive letter
                              and there can be no assurance that the staff of
                              the Division of Corporation Finance of the
                              Commission would make a similar determination
                              with respect to the Exchange Offer as it has in
                              such interpretive letters to third parties. Based
                              on these interpretations by the staff of the
                              Division of Corporation Finance of the
                              Commission, and subject to the two immediately
                              following sentences, the Company and the Trust
                              believe that New Capital Securities issued
                              pursuant to this Exchange Offer in exchange for
                              Old Capital Securities may be offered for resale,
                              resold and otherwise transferred by a holder
                              thereof (other than a holder who is a broker-
                              dealer) without further compliance with the
                              registration and prospectus delivery requirements
                              of the Securities Act, provided that such New
                              Capital Securities are acquired in the ordinary
                              course of such holder's business and that such
                              holder is not participating, and has no
                              arrangement or understanding with any person to
                              participate, in a distribution (within the
                              meaning of the Securities Act) of such New
                              Capital Securities. However, any holder of Old
                              Capital Securities who is an "affiliate" of the
                              Company or the Trust or who intends to
                              participate in the Exchange Offer for the purpose
                              of distributing the New Capital Securities, or
                              any broker-dealer who purchased the Old Capital
                              Securities from the Trust for resale pursuant to
                              Rule 144A or any other available exemption under
                              the Securities Act, (a) will not be able to rely
                              on the interpretations of the staff of the
                              Division of Corporation Finance of the Commission
                              set forth in the above-mentioned interpretive
                              letters, (b) will not be permitted or entitled to
                              tender such Old Capital Securities in the
                              Exchange Offer and (c) must comply with the
                              registration and prospectus delivery requirements
                              of the Securities Act in connection with any sale
                              or other transfer of such Old Capital Securities
                              unless such sale is made pursuant to an exemption
                              from such requirements. In addition, as described
                              below, if any broker-dealer holds Old
 
                                       11
<PAGE>
 
                              Capital Securities acquired for its own account
                              as a result of market-marking or other trading
                              activities and exchanges such Old Capital
                              Securities for New Capital Securities, then such
                              broker-dealer must deliver a prospectus meeting
                              the requirements of the Securities Act in
                              connection with any resales of such New Capital
                              Securities.
 
                              Each holder of Old Capital Securities who wishes
                              to exchange Old Capital Securities for New
                              Capital Securities in the Exchange Offer will be
                              required to represent in the Letter of
                              Transmittal or by transmission of an Agent's
                              Message that (i) it is not an "affiliate" of the
                              Company or the Trust, (ii) any New Capital
                              Securities to be received by it are being
                              acquired in the ordinary course of its business,
                              (iii) it has no arrangement or understanding with
                              any person to participate in a distribution
                              (within the meaning of the Securities Act) of
                              such New Capital Securities, and (iv) if such
                              holder is not a broker-dealer, such holder is not
                              engaged in, and does not intend to engage in, a
                              distribution (within the meaning of the
                              Securities Act) of such New Capital Securities.
                              Each broker-dealer that receives New Capital
                              Securities for its own account pursuant to the
                              Exchange Offer must acknowledge that it acquired
                              the Old Capital Securities for its own account as
                              the result of market-making activities or other
                              trading activities and must agree that it will
                              deliver a prospectus meeting the requirements of
                              the Securities Act in connection with any resale
                              of such New Capital Securities. The Letter of
                              Transmittal states that, by so acknowledging and
                              by delivering a prospectus, a broker-dealer will
                              not be deemed to admit that it is an
                              "underwriter" within the meaning of the
                              Securities Act. Based on the position taken by
                              the staff of the Division of Corporation Finance
                              of the Commission in the interpretive letters
                              referred to above, the Company and the Trust
                              believe that Participating Broker-Dealers who
                              acquired Old Capital Securities for their own
                              accounts as a result of market-making activities
                              or other trading activities may fulfill their
                              prospectus delivery requirements with respect to
                              the New Capital Securities received upon exchange
                              of such Old Capital Securities (other than Old
                              Capital Securities which represent an unsold
                              allotment from the original sale of the Old
                              Capital Securities) with a prospectus meeting the
                              requirements of the Securities Act, which may be
                              the prospectus prepared for an exchange offer so
                              long as it contains a description of the plan of
                              distribution with respect to the resale of such
                              New Capital Securities. Accordingly, this
                              Prospectus, as it may be amended or supplemented
                              from time to time, may be used by a Participating
                              Broker-Dealer in connection with resales of New
                              Capital Securities received in exchange for Old
                              Capital Securities where such Old Capital
                              Securities were acquired by such Participating
                              Broker-Dealer for its own account as a result of
                              market-making or other trading activities.
                              Subject to certain provisions set forth in the
                              Registration Rights Agreement and to the
                              limitations described below under "The Exchange
                              Offer--Resales of New Capital Securities," the
                              Company and the Trust have agreed
 
                                       12
<PAGE>
 
                              that this Prospectus, as it may be amended or
                              supplemented from time to time, may be used by a
                              Participating Broker-Dealer in connection with
                              resales of such New Capital Securities for a
                              period ending 90 days after the Expiration Date
                              (subject to extension under certain limited
                              circumstances) or, if earlier, when all such New
                              Capital Securities have been disposed of by such
                              Participating Broker-Dealer. See "Plan of
                              Distribution." Any Participating Broker-Dealer
                              who is an "affiliate" of the Company or the Trust
                              may not rely on such interpretive letters and
                              must comply with the registration and prospectus
                              delivery requirements of the Securities Act in
                              connection with any resale transaction. See "The
                              Exchange Offer--Resales of New Capital
                              Securities."
 
Exchange Agent..............  The exchange agent with respect to the Exchange
                              Offer is The Chase Manhattan Bank (the "Exchange
                              Agent"). The applicable addresses, and telephone
                              and facsimile numbers, of the Exchange Agent are
                              set forth in "The Exchange Offer--Exchange Agent"
                              and in the Letter of Transmittal.
 
Use of Proceeds.............  Neither the Company nor the Trust will receive
                              any cash proceeds from the issuance of the New
                              Capital Securities offered hereby. See "Use of
                              Proceeds."
 
Certain United States
 Federal Income Tax
 Considerations; ERISA
 Considerations.............
                              Holders of Old Capital Securities should review
                              the information set forth under "Certain Federal
                              Income Tax Considerations" and "ERISA
                              Considerations" prior to tendering Old Capital
                              Securities in the Exchange Offer.
 
                             NEW CAPITAL SECURITIES
 
Securities Offered..........  Up to $300,000,000 aggregate Liquidation Amount
                              of the New Capital Securities which have been
                              registered under the Securities Act (Liquidation
                              Amount $1,000) per New Capital Security). The New
                              Capital Securities will be issued, and the Old
                              Capital Securities were issued, under the
                              Declaration. The New Capital Securities and any
                              Old Capital Securities which remain outstanding
                              after consummation of the Exchange Offer will
                              vote together as a single class for purposes of
                              determining whether holders of the requisite
                              percentage in outstanding Liquidation Amount
                              thereof have taken certain actions or exercised
                              certain rights under the Declaration. See
                              "Description of New Capital Securities--Voting
                              Rights; Amendment of the Declaration." The terms
                              of the New Capital Securities are identical in
                              all material respects to the terms of the Old
                              Capital Securities, except that the New Capital
                              Securities have been registered under the
                              Securities Act and will not be subject to the
                              $100,000 minimum Liquidation Amount transfer
                              restriction and certain other transfer
                              restrictions applicable to the Old Capital
 
                                       13
<PAGE>
 
                              Securities and will not provide for any increase
                              in the Distribution rate thereon. See "The
                              Exchange Offer--Purpose of the Exchange Offer,"
                              "Description of New Capital Securities" and
                              "Description of Old Securities."
 
Distribution Dates..........  February 15 and August 15 of each year,
                              commencing August 15, 1997.
 
Extension Periods...........  So long as no Debenture Event of Default (as
                              defined herein) has occurred and is continuing,
                              Distributions on the New Capital Trust Securities
                              may be deferred for the duration of any Extension
                              Period elected by the Company with respect to the
                              payment of interest on the New Junior
                              Subordinated Debentures. No Extension Period will
                              exceed 10 consecutive semi-annual periods or
                              extend beyond the Stated Maturity Date. See
                              "Description of New Junior Subordinated
                              Debentures--Option to Extend Interest Payment
                              Date" and "Certain Federal Income Tax
                              Considerations--Interest Income and Original
                              Issue Discount."
 
Ranking.....................  The New Capital Securities will rank pari passu,
                              and payments thereon will be made pro rata, with
                              the Old Capital Securities and the Common
                              Securities except as described under "Description
                              of New Capital Securities--Subordination of
                              Common Securities." The New Junior Subordinated
                              Debentures will rank pari passu with the Old
                              Junior Subordinated Debentures, and all other
                              junior subordinated debentures issued by the
                              Company (the "Other Debentures") and sold to
                              other trusts established or to be established by
                              the Company, in each case similar to the Trust
                              (the "Other Trusts"), and will be unsecured and
                              subordinate and rank junior in right of payment
                              to all Senior Indebtedness to the extent and in
                              the manner set forth in the Indenture. See
                              "Description of New Junior Subordinated
                              Debentures." The New Guarantee will rank pari
                              passu with the Old Guarantee and all other
                              guarantees issued by the Company with respect to
                              capital securities issued or to be issued by
                              Other Trusts (the "Other Guarantees") and will
                              constitute an unsecured obligation of the Company
                              and will be subordinate and rank junior in right
                              of payment to all Senior Indebtedness to the
                              extent and in the manner set forth in the
                              Guarantee Agreement. See "Description of New
                              Guarantee."
 
Redemption..................  The New Capital Securities will be subject to
                              mandatory redemption in a Like Amount, in whole
                              but not in part, (i) on the Stated Maturity Date
                              upon repayment of the New Junior Subordinated
                              Debentures and (ii) at any time before the Stated
                              Maturity Date contemporaneously with the optional
                              prepayment of the New Junior Subordinated
                              Debentures by the Company upon the occurrence and
                              continuation of a Special Event, in each case at
                              the applicable Redemption Price. See "Description
                              of New Capital Securities--Redemption."
 
                                       14
<PAGE>
 
 
Voting Rights...............  Holders of New Capital Securities will have
                              limited voting rights and, so long as no
                              Debenture Event of Default has occurred and is
                              continuing, will not be entitled to vote to
                              appoint, remove or replace, or to increase or
                              decrease the number of Issuer Trustees, which
                              voting rights are vested exclusively in the
                              holder of the Common Securities. See "Description
                              of New Capital Securities--Voting Rights."
 
Ratings.....................  The New Capital Securities are expected to be
                              rated "a2" by Moody's Investors Service, Inc. and
                              "BBB+" by Standard and Poors Rating Services. A
                              security rating is not a recommendation to buy,
                              sell or hold securities and may be subject to
                              revision or withdrawal at any time by the
                              assigning rating organization.
 
Absence of Market for New
 Capital Securities.........
                              The New Capital Securities will be a new issue of
                              securities for which there currently is no
                              market. Although the Merrill Lynch, Pierce,
                              Fenner & Smith Incorporated and Morgan Stanley &
                              Co. Incorporated, the initial purchasers of the
                              Old Capital Securities (the "Initial
                              Purchasers"), have informed the Trust and the
                              Company that they currently intend to make a
                              market in the Capital Securities, the Initial
                              Purchasers are not obligated to do so, and any
                              such market making may be discontinued at any
                              time without notice. Accordingly, there can be no
                              assurance as to the development or liquidity of
                              any market for the New Capital Securities. The
                              Trust and the Company do not intend to apply for
                              listing of the Capital Securities on any
                              securities exchange or for inclusion in NASDAQ.
                              See "Plan of Distribution."
 
Use of Proceeds.............  Neither the Company nor the Trust will receive
                              any cash proceeds from the issuance of the New
                              Capital Securities offered hereby. See "Use of
                              Proceeds."
 
Risk Factors................  Prospective investors should carefully consider
                              the matters set forth under "Risk Factors."
 
                                       15
<PAGE>
 
                                 RISK FACTORS
 
  Prospective purchasers of Capital Securities should carefully review the
information contained elsewhere in this Prospectus and should particularly
consider the following matters.
 
RANKING OF SUBORDINATE OBLIGATIONS UNDER THE NEW GUARANTEE AND THE NEW JUNIOR
SUBORDINATED DEBENTURES
 
  The obligations of the Company under the New Guarantee and under the New
Junior Subordinated Debentures will be unsecured and subordinate and rank
junior in right of payment to all present and future Senior Indebtedness of
the Company to the extent and in the manner set forth in the Indenture and the
New Guarantee, respectively. No payment may be made of the principal of, or
premium, if any, or interest on the New Junior Subordinated Debentures, or in
respect of any redemption, retirement, purchase or other acquisition of any of
the New Junior Subordinated Debentures, at any time when (i) there shall have
occurred and be continuing a default in any payment in respect of any Senior
Indebtedness, or there has been an acceleration of the maturity thereof
because of a default or (ii) in the event of the acceleration of the maturity
of the New Junior Subordinated Debentures until payment has been made on all
Senior Indebtedness. As of March 31, 1997, Senior Indebtedness obligations of
the Company aggregated approximately $199.5 million. There are no terms in the
New Capital Securities, the New Junior Subordinated Debentures or the New
Guarantee that limit the Company's ability to incur additional indebtedness,
including indebtedness which ranks senior to the Junior Subordinated
Debentures and the Guarantee. See "Description of New Guarantee--Status of New
Guarantee" and "Description of New Securities--Description of New Junior
Subordinated Debentures--Subordination."
 
HOLDING COMPANY STRUCTURE; STRUCTURAL SUBORDINATION AND LEVERAGE
 
  The Trust's ability to make distributions and other payments on the New
Capital Securities is solely dependent upon the Company's making interest and
other payments on the New Junior Subordinated Debentures. The Company is a
holding company and its assets consist almost entirely of investments in its
subsidiaries. In addition, because the Company is a holding company, the New
Junior Subordinated Debentures are effectively subordinated to all existing
and future liabilities of the Company's subsidiaries. A substantial portion of
the consolidated liabilities have been incurred by its subsidiaries.
Therefore, the Company's rights and the rights of its creditors, including
holders of New Junior Subordinated Debentures, to participate in the
distribution of assets of any subsidiary upon the latter's liquidation or
reorganization will be subject to prior claims of the subsidiary's creditors,
including trade creditors, except to the extent that the Company may itself be
a creditor with recognized claims against the subsidiary (in which case the
claims of the Company would still be subject to the prior claims of any
secured creditor of such subsidiary and of any holder of indebtedness of such
subsidiary that is senior to that held by the Company). Accordingly, the
holders of New Junior Subordinated Debentures may be effectively subordinated
to such claims. At March 31, 1997, the subsidiaries of the Company had total
liabilities of approximately $16.6 billion.
 
  The Company's ability to service its indebtedness, including the New Junior
Subordinated Debentures, and to perform under the New Guarantee, is dependent
upon the earnings of the Company's subsidiaries and the distribution or other
payment of such earnings to the Company in the form of dividends, loans or
advances, and repayment of loans and advances from the Company. The
subsidiaries are separate and distinct legal entities and have no obligation,
contingent or otherwise, to pay any amounts due pursuant to the New Junior
Subordinated Debentures or the New Guarantee or to make any funds available
therefor, whether by dividends, loans or other payments. The payment of
dividends or the making of loans and advances to the Company by its
subsidiaries are contingent upon the earnings of those subsidiaries and are
subject to various business considerations.
 
  In addition, payments of dividends to the Company or its affiliates by the
Company's subsidiaries are subject to various insurance statutory and
regulatory restrictions. The payment of dividends to the Company by its
wholly-owned subsidiary First Allmerica Financial Life Insurance Company, a
Massachusetts insurance company ("FAFLIC"), is subject to general limitations
imposed by Massachusetts insurance laws. Such laws
 
                                      16
<PAGE>
 
require that statutory surplus following any dividend or distribution be
reasonable in relation to FAFLIC's outstanding liabilities and adequate to
meet its financial needs and permits the payment of dividends only out of
statutory earned (unassigned) surplus unless the payment out of other funds is
approved by the Massachusetts Commissioner of Insurance (the "Commissioner").
Additionally, notice to the Commissioner must be given prior to the payment of
any dividend or distribution. In addition, without prior notice to and
approval of the Commissioner, FAFLIC may not declare or pay an extraordinary
dividend, which is defined as any dividend or distribution of cash or other
property whose fair market value together with other dividends or
distributions made within the preceding 12 months exceeds the greater of
FAFLIC's statutory net gain from operations of the preceding calendar year or
10% of statutory surplus as of the preceding December 31. FAFLIC could have
paid up to approximately $144.9 million in dividends in 1996 without being
subject to the restrictions on payment of extraordinary dividends.
 
  The Company currently owns, through its wholly-owned subsidiaries, including
FAFLIC, 100% of the outstanding stock of The Hanover Insurance Company, a New
Hampshire insurance company ("Hanover"). Dividend payments from Hanover are
regulated by the insurance laws of New Hampshire, which provide that the
maximum dividends and other distributions that an insurer may pay in any
twelve-month period, without prior 30-day notice to and approval of the New
Hampshire Commissioner of Insurance (the "New Hampshire Commissioner"), is
limited to 10% of its statutory policyholders' surplus as of the preceding
December 31. Additionally, New Hampshire law requires 15-day prior notice of
any dividend. In December 1996, Hanover authorized a dividend of $80 million.
On January 2, 1997, Hanover authorized, and on January 9, 1997, the New
Hampshire Commissioner approved, an extraordinary dividend of $120 million.
Any additional dividends from Hanover in 1997 would also be considered
extraordinary dividends and would require the approval of the New Hampshire
Commissioner.
 
  The Indenture does not contain provisions that afford holders of the New
Junior Subordinated Debentures protection in the event of a highly leveraged
transaction, including a change of control, or other similar transactions
involving the Company that may adversely affect such holders. See "Description
of New Junior Subordinated Debentures--General."
 
OPTION TO EXTEND INTEREST PAYMENT PERIOD; TAX CONSIDERATIONS
 
  So long as no Debenture Event of Default shall have occurred and be
continuing, the Company shall have the right under the Indenture to defer
payments of interest on the New Junior Subordinated Debentures at any time or
from time to time for a period not exceeding 10 consecutive semi-annual
periods with respect to each Extension Period, provided that no Extension
Period may extend beyond the Stated Maturity Date. Upon any such deferral,
semi-annual Distributions on the Trust Securities by the Trust will be
deferred (and the amount of Distributions to which holders of the Trust
Securities are entitled will accumulate Distributions thereon at the rate of
8.207% per annum, compounded semi-annually) from the relevant payment date for
such Distributions during any such Extension Period.
 
  The Company may extend any existing Extension Period, provided that such
extension does not cause such Extension Period to exceed 10 consecutive semi-
annual periods or to extend beyond the Stated Maturity Date. Upon the
expiration of any Extension Period and the payment of all interest then
accrued and unpaid on the New Junior Subordinated Debentures (together with
interest thereon at the annual rate of 8.207%, compounded semi-annually, to
the extent permitted by applicable law), the Company may elect to begin a new
Extension Period, subject to the above requirements. There is no limitation on
the number of times that the Company may elect to begin an Extension Period.
See "Description of New Capital Securities--Distributions" and "Description of
New Junior Subordinated Debentures--Option to Extend Interest Payment Period."
 
  Should the Company exercise its right to defer payments of interest by
extending the interest payment period, each holder of New Capital Securities
will be required to accrue income (as original issue discount ("OID"), in
respect of the deferred stated interest allocable to its New Capital
Securities for United States
 
                                      17
<PAGE>
 
federal income tax purposes, which will be allocated but not distributed to
holders of record of New Capital Securities. As a result, each such holder of
New Capital Securities will recognize income for United States federal income
tax purposes in advance of the receipt of cash and will not receive the cash
from the Trust related to such income if such holder disposes of its New
Capital Securities prior to the record date for the date on which
distributions of such amounts are made. The Company has no current intention
of exercising its right to defer payments of interest by extending the
interest payment period on the New Junior Subordinated Debentures. However,
should the Company determine to exercise such right in the future, the market
price of the Capital Securities is likely to be affected. A holder that
disposes of its New Capital Securities during an Extension Period, therefore,
might not receive the same return on its investment as a holder that continues
to hold its New Capital Securities. In addition, as a result of the existence
of the Company's right to defer interest payments, the market price of the New
Capital Securities (which represent an undivided beneficial interest in the
New Junior Subordinated Debentures) may be more volatile than other securities
on which OID accrues that do not have such rights. See "Certain States Federal
Income Tax Considerations--Interest Income and Original Issue Discount" and
"--Sales of New Capital Securities."
 
PROPOSED TAX LEGISLATION
 
  On February 6, 1997, as part of President Clinton's Fiscal 1998 Budget
Proposal, the United States Treasury Department proposed legislation that
would, among other things, deny an issuer a deduction for United States
federal income tax purposes for the payment of interest on instruments with
characteristics similar to the Junior Subordinated Debentures. However, no
similar provision was contained in Chairman Archer's Mark submitted to the
Committee on Ways and Means on June 9, 1997. Even if the proposed legislation
were enacted in its current form, it would not be expected to apply to the New
Junior Subordinated Debentures since the proposed effective date for this
provision is the date of first committee action. There can be no assurances,
however, that the proposed legislation, if enacted, or similar legislation
enacted after the date hereof would not adversely affect the tax treatment of
the New Junior Subordinated Debentures, resulting in a Tax Event. The
occurrence of a Tax Event may result in the redemption of the New Junior
Subordinated Debentures for cash, in which event the holders of the New
Capital Securities would receive cash in redemption of their New Capital
Securities. See "Description of New Capital Securities--Redemption" and
"Description of New Junior Subordinated Debentures--Special Event Prepayment."
See also "Certain Federal Income Tax Consequences--Proposed Tax Legislation."
 
REDEMPTION OR DISTRIBUTION
 
  Upon the occurrence and continuation of a Special Event (including a Tax
Event or an Investment Company Event, in each case, as defined under
"Description of New Junior Subordinated Debentures--Special Event
Prepayment"), the Company will have the right to prepay the New Junior
Subordinated Debentures in whole (but not in part) at the Special Event
Prepayment Price within 90 days following the occurrence of such Special Event
and therefore cause a mandatory redemption of the Capital Securities at the
Special Event Redemption Price. See "Description of New Capital Securities--
Redemption" and "--Liquidation of the Trust and Distribution of the Junior
Subordinated Debentures."
 
  The Company will have the right at any time to terminate the Trust and cause
the New Junior Subordinated Debentures to be distributed to the holders of the
Trust Securities in liquidation of the Trust. Such right is subject to the
Company having received an opinion of counsel to the effect that such
distribution will not be a taxable event to holders of Capital Securities.
Under current United States federal income tax law, a distribution of New
Junior Subordinated Debentures upon the dissolution of the Trust would not be
a taxable event to holders of the Capital Securities. If, however, the Trust
is characterized for United States federal income tax purposes as an
association taxable as a corporation at the time of dissolution of the Trust,
the distribution of the New Junior Subordinated Debentures may constitute a
taxable event to holders of Capital Securities. Moreover, upon the occurrence
of a Special Event, a dissolution of the Trust in which holders of Capital
Securities receive cash would be a taxable event to such holders. See "Certain
Federal Income Tax Considerations--Receipt of Junior Subordinated Debentures
or Cash Upon Liquidation of the Trust."
 
                                      18
<PAGE>
 
POSSIBLE ADVERSE EFFECT ON MARKET PRICES
 
  There can be no assurance as to the market prices for the New Capital
Securities or the New Junior Subordinated Debentures that may be distributed
in exchange for Capital Securities if a dissolution or liquidation of the
Trust were to occur. Accordingly, the New Capital Securities or the New Junior
Subordinated Debentures may trade at a discount to the price that the investor
paid to purchase the New Capital Securities offered hereby. Because holders of
New Capital Securities may receive New Junior Subordinated Debentures,
prospective purchasers of New Capital Securities are also making an investment
decision with regard to the New Junior Subordinated Debentures and should
carefully review all the information regarding the New Junior Subordinated
Debentures contained herein. See "Description of New Capital Securities--
Redemption," "--Distribution of the Junior Subordinated Debentures" and
"Description of New Junior Subordinated Debentures."
 
RIGHTS UNDER THE NEW GUARANTEE
 
  The Chase Manhattan Bank will act as Guarantee Trustee and will hold the New
Guarantee for the benefit of the holders of New Capital Securities. The Chase
Manhattan Bank will also act as Property Trustee under the Declaration and as
Debenture Trustee under the Indenture. Chase Manhattan Bank Delaware will act
as Delaware Trustee under the Declaration. The New Guarantee will guarantee to
the holders of New Capital Securities the following payments, to the extent
not paid by the Trust: (i) any accumulated and unpaid Distributions that are
required to be paid on the New Capital Securities, to the extent the Trust has
funds on hand legally available therefor, (ii) the Redemption Price, including
all accumulated and unpaid Distributions with respect to New Capital
Securities called for redemption by the Trust, to the extent the Trust has
funds on hand legally available therefor, and (iii) upon a voluntary or
involuntary termination and liquidation of the Trust (other than in connection
with the distribution of New Junior Subordinated Debentures to the holders of
New Capital Securities), the lesser of (a) the aggregate of the liquidation
amount and all accumulated and unpaid Distributions on the Capital Securities
to the date of the payment, to the extent the Trust has funds on hand legally
available therefor, and (b) the amount of assets of the Trust remaining
available for distribution to holders of the New Capital Securities in
liquidation of the Trust. Subject to certain limited exceptions, the holders
of a majority in liquidation amount of New Capital Securities have the right
to direct the time, method and place of conducting any proceeding for any
remedy available to the Guarantee Trustee or to direct the exercise of any
trust or power conferred upon the Guarantee Trustee under the New Guarantee.
Notwithstanding the foregoing, if the Guarantee Trustee fails to enforce the
New Guarantee, any holder of New Capital Securities may institute a legal
proceeding directly against the Company to enforce such holders' rights under
the New Guarantee without first instituting a legal proceeding against the
Trust, the Guarantee Trustee or any other person or entity. If the Company
were to default on its obligation to pay amounts payable on the New Junior
Subordinated Debentures or otherwise, the Trust would lack available funds for
the payment of distributions or amounts payable on redemption of the New
Capital Securities or otherwise, and, in such event, holders of the New
Capital Securities would not be able to rely upon the New Guarantee for
payment of such amounts. Instead, holders of the New Capital Securities would
rely on the enforcement (1) by the Property Trustee (as defined in "The Trust"
herein) of its rights as registered holder of the New Junior Subordinated
Debentures against the Company pursuant to the terms of the New Junior
Subordinated Debentures or (2) by such holder of its right against the Company
to enforce payments on the New Junior Subordinated Debentures. See
"Description of New Guarantee" and "Description of New Junior Subordinated
Debentures." The New Guarantee will constitute an unsecured obligation of the
Company and will rank subordinate and junior in right of payment to all Senior
Indebtedness in the same manner as the Junior Subordinated Debentures. The
Declaration provides that each holder of Capital Securities, by acceptance
thereof, agrees to the provisions of the Guarantee, including the
subordination provisions thereof, and the Indenture.
 
LIMITED VOTING RIGHTS
 
  Holders of New Capital Securities will have limited voting rights and, so
long as no Debenture Event of Default has occurred and is continuing, will not
be entitled to vote to appoint, remove or replace, or to increase or decrease
the number of, Trustees (as defined herein), which voting rights are vested
exclusively in the holder of the Common Securities. See "Description of New
Capital Securities--Voting Rights."
 
 
                                      19
<PAGE>
 
TRADING PRICE
 
  The New Capital Securities may trade at a price that does not fully reflect
the value of accrued but unpaid interest with respect to the underlying New
Junior Subordinated Debentures. A holder who uses the accrual method of
accounting for tax purposes (and a cash method holder, if the New Junior
Subordinated Debentures are treated as issued with OID) and who disposes of
its Capital Securities between record dates for payments of distributions
thereon will be required to include accrued but unpaid interest on the New
Junior Subordinated Debentures through the date of disposition in income as
ordinary income (i.e., interest or, possibly, OID), and to add such amount to
its adjusted tax basis in its pro rata share of the underlying New Junior
Subordinated Debentures deemed disposed of. To the extent the selling price is
less than the holder's adjusted tax basis (which will include all accrued but
unpaid interest), a holder will recognize a capital loss. Subject to certain
limited exceptions, capital losses cannot be applied to offset ordinary income
for United States federal income tax purposes. See "Certain Federal Income Tax
Considerations--Interest Income and Original Issue Discount" and "--Sales of
Capital Securities."
 
CONSEQUENCES OF A FAILURE TO EXCHANGE OLD CAPITAL SECURITIES
 
  The Old Capital Securities have not been registered under the Securities Act
or any state securities laws and therefore may not be offered, sold or
otherwise transferred except in compliance with the registration requirements
of the Securities Act and any other applicable securities laws, or pursuant to
an exemption therefrom or in a transaction not subject thereto, and in each
case in compliance with certain other conditions and restrictions. Old Capital
Securities which remain outstanding after consummation of the Exchange Offer
will continue to bear a legend reflecting such restrictions on transfer. In
addition, upon consummation of the Exchange Offer, holders of Old Capital
Securities which remain outstanding will not be entitled to any rights to have
such Old Capital Securities registered under the Securities Act or to any
similar rights under the Registration Rights Agreement (subject to certain
limited exceptions). The Company and the Trust do not intend to register under
the Securities Act any Old Capital Securities which remain outstanding after
consummation of the Exchange Offer (subject to such limited exceptions, if
applicable). To the extent that Old Capital Securities are tendered and
accepted in the Exchange Offer, a holder's ability to sell untendered Old
Capital Securities could be adversely affected.
 
  The New Capital Securities and any Old Capital Securities which remain
outstanding after consummation of the Exchange Offer will vote together as a
single class for purposes of determining whether holders of the requisite
percentage in outstanding Liquidation Amount thereof have taken certain
actions or exercised certain rights under the Declaration. See "Description of
New Capital Securities--Voting Rights; Amendment of the Declaration."
 
  The Old Capital Securities provide, among other things, that, if a
registration statement relating to the Exchange Offer has not been filed with
the Commission by July 3, 1997 or has not been declared effective by August 2,
1997, the Distribution rate borne by the Old Capital Securities, currently
8.207% per annum, commencing on August 3, 1997 will increase by 0.25% per
annum until the Exchange Offer is consummated. Upon consummation of the
Exchange Offer, holders of Old Capital Securities will not be entitled to any
increase in the Distribution rate thereon or any further registration rights
under the Registration Rights Agreement, except under limited circumstances.
See "Description of Old Capital Securities."
 
ABSENCE OF PUBLIC MARKET
 
  The Old Capital Securities were issued to, and the Company believes the Old
Capital Securities are currently owned by, a relatively small number of
beneficial owners. The Old Capital Securities have not been registered under
the Securities Act and will be subject to restrictions on transferability if
they are not exchanged for the New Capital Securities. Although the New
Capital Securities generally may be resold or otherwise transferred by the
holders (who are not affiliates of the Company or the Trust) without
compliance with the registration requirements under the Securities Act, they
will constitute a new issue of securities with no established trading
 
                                      20
<PAGE>
 
market. Old Capital Securities may be transferred by the holders thereof only
in blocks having a Liquidation Amount of not less than $100,000 (100 Old
Capital Securities). New Capital Securities may be transferred by the holders
thereof in blocks having a Liquidation Amount of $1,000 (one New Capital
Security) or integral multiples thereof. The Company and the Trust have been
advised by the Initial Purchasers that the Initial Purchasers presently intend
to make a market in the New Capital Securities. However, the Initial
Purchasers are not obligated to do so and any market-making activity with
respect to the New Capital Securities may be discontinued at any time without
notice. In addition, such market-making activity will be subject to the limits
imposed by the Securities Act and the Exchange Act and may be limited during
the Exchange Offer. Accordingly, no assurance can be given that an active
public or other market will develop for the New Capital Securities or the Old
Capital Securities or as to the liquidity of or the trading market for the New
Capital Securities or the Old Capital Securities. If an active public market
does not develop, the market price and liquidity of the New Capital Securities
may be adversely affected.
 
  If a public trading market develops for the New Capital Securities, future
trading prices will depend on many factors, including, among other things,
prevailing interest rates, the Company's results and the market for similar
securities. Depending on prevailing interest rates, the market for similar
securities and other factors, including the financial condition of the
Company, the New Capital Securities may trade at a discount.
 
  Notwithstanding the registration of the New Capital Securities in the
Exchange Offer, holders who are "affiliates" (as defined under Rule 405 of the
Securities Act) of the Company or the Trust may publicly offer for sale or
resell the New Capital Securities only in compliance with the provisions of
Rule 144 under the Securities Act.
 
  Each broker-dealer that receives New Capital Securities for its own account
in exchange for Old Capital Securities, where such Old Capital Securities were
acquired by such broker-dealer as a result of market-making activities or
other trading activities, must acknowledge that it will deliver a prospectus
in connection with any resale of such New Capital Securities. See "Plan of
Distribution."
 
EXCHANGE OFFER PROCEDURES
 
  Issuance of the New Capital Securities in exchange for Old Capital
Securities pursuant to the Exchange Offer will be made only after a timely
receipt by the Trust of such Old Capital Securities, a properly completed and
duly executed Letter of Transmittal or Agents' Message in lieu thereof and all
other required documents. Therefore, holders of the Old Capital Securities
desiring to tender such Old Capital Securities in exchange for New Capital
Securities should allow sufficient time to ensure timely delivery. Neither the
Company or the Trust is under any duty to give notification of defects or
irregularities with respect to the tenders of Old Capital Securities for
exchange.
 
                                  THE COMPANY
 
  The Company is the holding company for a diversified group of insurance and
financial services companies with total assets as of March 31, 1997 of $19.6
billion. Through its subsidiaries, the Company offers financial products and
services in two major areas: Risk Management and Retirement and Asset
Management. Within these broad areas, the Company operates principally in five
operating segments: Regional Property & Casualty; Corporate Risk Management
Services; Retail Financial Services; Institutional Services and Allmerica
Asset Management.
 
  The Regional Property and Casualty segment of the Company's business
consists of its ownership of Allmerica P&C, which, through its subsidiaries
Hanover and Citizens, is in the business of underwriting personal and
commercial property and casualty insurance in five major lines of business:
personal automobile, homeowners, commercial automobile, workers' compensation
and commercial multiple peril.
 
                                      21
<PAGE>
 
  The Company's Retail Financial Services segment includes the individual
financial products businesses of First Allmerica Financial Life Insurance
Company ("FAFLIC") and its wholly owned subsidiary Allmerica Financial Life
Insurance and Annuity Company ("AFLIAC"), as well as the Company's registered
investment advisor and broker-dealer affiliates. Through this segment, the
Company is a leading provider of investment-oriented life insurance and
annuities to upper income individuals and small businesses throughout the
United States.
 
  The Company's Corporate Risk Management Services segment provides, through
FAFLIC and its subsidiaries, managed care medical group insurance products and
administrative services as well as other group insurance coverages, such as
group life, dental and disability products, to corporate employers.
 
  The Company's Institutional Services segment has historically offered plan
design, investment and participant recordkeeping services to defined benefit
and defined contribution retirement plans of corporate employers and sold GICs
and annuities to corporate retirement plans. The Company conducts its
operations in this segment through FAFLIC and its subsidiaries.
 
  At March 31, 1997, the Company had $10.1 billion of investment assets,
generally of high quality and broadly diversified across asset classes and
individual investment risks. The major categories of investment assets are
fixed maturities, which includes both investment grade and below investment
grade public and private debt securities; equity securities; mortgages,
principally on commercial properties; policy loans and real estate, which
consists primarily of investments in commercial properties. The remainder of
the investment assets is comprised principally of cash and cash equivalents.
 
  Additional information concerning the Company is included in the Company
reports and other documents incorporated by reference in this Prospectus. See
"Available Information" and "Incorporation of Certain Documents by Reference."
 
  The Company is a Delaware corporation incorporated in 1995 with executive
offices at 440 Lincoln Street, Worcester, Massachusetts 01653 (telephone (508)
855-1000).
 
REGARDING FORWARD-LOOKING STATEMENTS
 
  The Company wishes to caution readers that the following important factors,
among others, in some cases have affected and in the future could affect, the
Company's actual results and could cause the Company's actual results for 1997
and beyond to differ materially from those expressed in any forward-looking
statements made by, or on behalf of, the Company. The words "believes,"
"anticipated," "expects" and similar expressions are intended to identify
forward looking statements. See "Important Factors Regarding Forward-Looking
Statements" filed as Exhibit 99.2 to the Company's Annual Report on Form 10-K
for the year ended December 31, 1997 and incorporated herein by reference.
 
  Factors that may cause actual results to differ materially from those
contemplated or projected, forecast, estimated or budgeted in such forward
looking statements include among others, the following possibilities:
(i) adverse catastrophe experience and severe weather; (ii) adverse loss
development for events the Company insured in prior years or adverse trends in
mortality and morbidity; (iii) heightened competition, including the
intensification of price competition, the entry of new competitors, and the
introduction of new products by new and existing competitors; (iv) adverse
state and federal legislation or regulation, including decreases in rates,
limitations on premium levels, increases in minimum capital and reserve
requirements, benefit mandates, limitations on the ability to manage care and
utilization, and tax treatment of insurance products; (v) changes in interest
rates causing a reduction of investment income or in the market value of
interest rate sensitive investments; (vi) failure to obtain new customers,
retain existing customers or reductions in policies in force by existing
customers; (vii) higher service, administrative, or general expense due to the
need for additional advertising, marketing, administrative or management
information systems expenditures; (viii) loss or retirement of key executives;
(ix) increases in medical costs, including increases in utilization, costs of
medical services,
 
                                      22
<PAGE>
 
pharmaceuticals, durable medical equipment and other covered items; (x)
termination of provider contracts or renegotiation at less cost-effective
rates or terms of payment; (xi) changes in the Company's liquidity due to
changes in asset and liability matching; (xii) restrictions on insurance
underwriting, based on genetic testing and other criteria; (xiii) adverse
changes in the ratings obtained from independent rating agencies, such as
Moody's, Standard and Poors, A.M. Best and Duff & Phelps; (xiv) lower
appreciation on and decline in value of managed investments, resulting in
reduced variable products, assets and related fees; and (xv) possible claims
relating to sales practices for insurance products.
 
RECENT DEVELOPMENTS
 
  On February 19, 1997, the Company, Allmerica P&C and Merger Sub entered into
an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the
terms of the Merger Agreement, Merger Sub will merge with and into Allmerica
P&C, resulting in Allmerica P&C becoming a wholly owned subsidiary of the
Company. Holders of common stock, $1.00 par value, of Allmerica P&C
("Allmerica P&C Common Stock"), other than the Company or its subsidiaries or
persons who properly perfect their appraisal rights under the Delaware General
Corporation Law (each, an "Allmerica P&C Public Stockholder"), will receive,
at the election of such holder, one of the following (collectively, the
"Merger Consideration") in exchange for each share of Allmerica P&C Common
Stock:
 
   (i) (x) 0.4 (the "Standard Exchange Ratio") of a share of the common
       stock, $.01 par value of the Company ("Company Common Stock") and (y)
       an amount in cash, without interest, equal to $17.60 (the "Standard
       Cash Consideration"); provided, however, that (1) in the event the
       average closing price of Common Stock for the ten consecutive trading
       days ending on the fifth trading day prior to the effective date of
       the Merger (the "Average Stock Price") is less than $36.00, the
       Standard Cash Consideration shall be equal to (A) $32.00 less (B) the
       Standard Exchange Ratio multiplied by the Average Stock Price and (2)
       in the event the Average Stock Price is greater than $41.00, the
       Standard Cash Consideration shall be equal to (A) $34.00 less (B) the
       Standard Exchange Ratio multiplied by the Average Stock Price
       (collectively, the "Standard Consideration"); or
 
   (ii) 0.85714 (the "Stock Exchange Ratio") of a share of Company Common
        Stock (the "Stock Consideration"); provided, however, that (1) in
        the event the Average Stock Price is less than $36.00, the Stock
        Exchange Ratio shall be equal to $32.00 divided by the Average Stock
        Price and (2) that in the event the Average Stock Price is greater
        than $41.00, the Stock Exchange Ratio shall be equal to $34.00
        divided by the Average Stock Price; or
 
   (iii) cash, without interest, in an amount equal to $33.00 (the "Cash
         Consideration"); provided, however, that (1) in the event the
         Average Stock Price is less than $36.00, the Cash Consideration
         shall be equal to $32.00 and (2) in the event the Average Stock
         Price is more than $41.00, the Cash Consideration shall be equal to
         $34.00.
 
  The maximum number of shares of Company Common Stock to be issued as Merger
Consideration is approximately 9.7 million shares. The maximum amount of cash
to be issued as Merger Consideration is approximately $425.5 million. The form
of payment of the Merger Consideration to Allmerica P&C Public Stockholders
will be prorated in the event the Cash Consideration or the Stock
Consideration is oversubscribed.
 
  The total amount of funds required by the Company to pay the cash component
of the Merger Consideration is estimated to be approximately $425.5 million.
The Company expects to finance this cash payment and any costs relating to the
Merger from one or more of the following sources: (i) the $296.3 million of
net proceeds received by the Company from the sale of the Old Capital
Securities; (ii) internally available funds of the Company; and/or (iii)
borrowings pursuant to a revolving bank credit facility.
 
                                      23
<PAGE>
 
  The Company is pursuing the Merger in order to increase the proportion of
its earnings from Allmerica P&C's property and casualty operations, which are
a key element of the Company's future operations and strategy. Additionally,
the Company believes that the Merger will result in a more stable surplus
position for FAFLIC, since the Allmerica P&C Common Stock and therefore
FAFLIC's surplus, would no longer be linked to a fluctuating market price.
Further, the Merger will create a simplified corporate structure for the
Company, allowing it greater efficiency and flexibility in its utilization of
capital. Lastly, the Merger will provide the Company with certain
administrative cost savings, primarily resulting from the elimination of
certain Allmerica P&C shareholder-related expenses and the elimination of
taxes on Allmerica P&C dividends to its direct shareholder, SMA Financial
Corp.
 
CORPORATE STRUCTURE
 
  The following organizational chart illustrates the corporate structure of
the Company and its principal subsidiaries, assuming consummation of the
Merger.
 
 
                            [ORGANIZATIONAL CHART] 
 
 
 
                                      24
<PAGE>
 
                                USE OF PROCEEDS
 
  Neither the Company or the Trust will receive any cash proceeds from the
issuance of the New Capital Securities. In consideration for issuing the New
Capital Securities in exchange for the Old Capital Securities as described in
this Prospectus, the Trust will receive Old Capital Securities in like
Liquidation Amount. The Old Capital Securities surrendered in exchange for the
New Capital Securities will be retired and canceled.
 
  The proceeds to the Trust (without giving effect to expenses of the offering
payable by the Company) from the offering of the Old Capital Securities were
$300,000,000. All of the proceeds from the sale of Old Capital Securities were
invested by the Trust in the Junior Subordinated Debentures. The net proceeds
to the Company of $296.3 million from the sale of the Old Junior Subordinated
Debentures were used to fund a portion of the cash component of the Merger
Consideration. See "The Company--Recent Developments."
 
                CONSOLIDATED RATIO OF EARNINGS TO FIXED CHARGES
 
  The following table sets forth the Company's consolidated ratios of earnings
to fixed charges for the periods indicated:
 
<TABLE>
<CAPTION>
                               THREE MONTHS
                                   ENDED
                                 MARCH 31,       YEAR ENDED DECEMBER 31,
                               ---------------   ----------------------------
                                1997     1996    1996  1995  1994  1993  1992
                               ------   ------   ----  ----  ----  ----  ----
<S>                            <C>      <C>      <C>   <C>   <C>   <C>   <C>
Ratio of Earnings to Fixed
 Charges(1)...................    4.3x     8.5x  8.7x  13.4x 10.6x 33.4x 14.7x
</TABLE>
- --------
(1) For purposes of determining the historical ratios of earnings to fixed
    charges, earnings consist of earnings before federal income taxes,
    minority interest, extraordinary items and cumulative effect of accounting
    changes plus fixed charges. Fixed charges consist of interest expense on
    debt plus the portion of operating lease rentals representative of the
    interest factor.
 
                                      25
<PAGE>
 
                                CAPITALIZATION
 
  The following table sets forth the actual consolidated capitalization of the
Company and its subsidiaries at March 31, 1997, and the pro forma consolidated
capitalization of the Company and its subsidiaries as of such date, giving
effect to the Merger as if it had ocurred on such date. The table should be
read in conjunction with the Company's consolidated financial statements and
notes thereto included in the documents incorporated by reference herein. See
"Incorporation of Certain Documents by Reference."
 
<TABLE>
<CAPTION>
                                                          ACTUAL    AS ADJUSTED
                                                         ---------- -------------
                                                           AT MARCH 31, 1997
                                                         ------------------------
                                                         (DOLLARS IN MILLIONS)
<S>                                                      <C>        <C>
Long-term debt.......................................... $    202.2  $    202.2
Company-obligated mandatorily redeemable preferred
 securities of subsidiary trust (1).....................      300.0       300.0
Equity
  Preferred stock, $.01 par value; 20,000,000 shares
   authorized; none issued and outstanding..............        --          --
  Common stock, $.01 par value; 300,000,000 shares
   authorized; 50,134,651 shares issued and
   outstanding..........................................        0.5         0.6
  Additional paid-in capital............................    1,378.8     1,751.0
  Retained earnings.....................................      223.5       223.5
  Net unrealized appreciation on investments............       69.2        69.2
                                                         ----------  ----------
    Total equity........................................    1,672.0     2,044.3
                                                         ----------  ----------
    Total capitalization................................ $  2,174.2  $  2,546.5
                                                         ==========  ==========
</TABLE>
- --------
(1) As described herein, the sole assets of the Trust are, and will be, the
    Junior Subordinated Debentures with a principal amount of approximately
    $309.3 million. The Junior Subordinated Debentures bear interest at the
    rate of 8.207% per annum and will mature on February 3, 2027. The Company
    owns all of the Common Securities of the Trust. Upon redemption of the
    Junior Subordinated Debentures, the Capital Securities will be mandatorily
    redeemable.
 
                                      26
<PAGE>
 
              SELECTED CONSOLIDATED FINANCIAL DATA OF THE COMPANY
 
  The following selected historical consolidated balance sheet data as of
December 31, 1996, 1995, 1994 and 1993 and the statement of income data for
each of the years ended December 31, 1996, 1995, 1994, 1993 and 1992 have been
derived from the consolidated financial statements of the Company, which have
been audited by the Company's independent accountants, whose reports thereon
for the years ended December 31, 1996, 1995 and 1994 and as of December 31,
1996 and 1995 are incorporated by reference in this Prospectus. The balance
sheet data as of March 31, 1997 and 1996 and December 31, 1992 and the
statement of income data for the three months ended March 31, 1997 and 1996
are unaudited but, in the opinion of management, reflect all adjustments
necessary for the fair presentation of the results for such period. All
adjustments are of a normal, recurring nature, except as described in the
accompanying notes. The following data should be read in conjunction with the
consolidated financial statements of the Company and the notes thereto, which
are incorporated by reference in this Prospectus. See "Incorporation by
Reference" and "Available Information."
 
<TABLE>
<CAPTION>
                           AT OR FOR THE
                         THREE MONTHS ENDED                     AT OR FOR THE
                             MARCH 31,                     YEAR ENDED DECEMBER 31,
                         -------------------- -----------------------------------------------------
                           1997       1996      1996       1995       1994       1993       1992
                         ---------  --------- ---------  ---------  ---------  ---------  ---------
                                    (DOLLARS IN MILLIONS EXCEPT PER SHARE AMOUNTS)
<S>                      <C>        <C>       <C>        <C>        <C>        <C>        <C>
STATEMENT OF INCOME
 DATA:
 Revenues
 Premiums............... $   562.3     547.6  $ 2,236.3  $ 2,222.8  $ 2,181.8  $ 2,079.3  $ 2,172.4
 Universal life and
  investment product
  policy fees...........      56.3      46.5      197.2      172.4      156.8      143.7      132.9
 Net investment
  income................     163.4     161.1      672.6      710.5      743.1      782.8      823.7
 Net realized
  gains(1)..............      44.0      51.6       65.9       39.8        1.1      159.6        9.6
 Other income(2)(3).....      28.9      21.6      102.7       95.4      112.3       73.8       37.1
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
   Total revenues.......     854.9     828.4    3,274.7    3,240.9    3,195.1    3,239.2    3,175.7
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
 Benefits, Losses and
  Expenses
 Policy benefits,
  claims, losses and
  loss adjustment
  expenses..............     492.3     496.9    1,957.0    2,010.3    2,047.0    1,987.2    2,163.8
 Policy acquisition
  expenses..............     119.8     119.7      483.5      470.3      475.7      435.8      424.1
 Loss from cession of
  disability income
  business(4)...........      53.9       --         --         --         --         --         --
 Other operating
  expenses net(2)(5)....     134.9     115.6      502.5      458.5      518.9      421.3      373.5
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
   Total benefits,
    losses and
    expenses............     800.9     732.2    2,943.0    2,939.1    3,041.6    2,844.3    2,961.4
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
 Income before federal
  income taxes..........      54.0      96.2      331.7      301.8      153.5      394.9      214.3
 Federal income tax
  expense...............       9.7      24.2       75.2       82.7       53.4       74.7       62.7
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
 Income before minority
  interest,
  extraordinary item
  and cumulative effect
  of accounting
  changes...............      44.3      72.0      256.5      219.1      100.1      320.2      151.6
 Minority interest
 Distributions on
  Company-obligated
  mandatorily
  redeemable preferred
  securities of
  subsidiary trust......      (2.4)      --         --         --         --         --         --
 Equity in
  earnings(6)...........     (26.0)    (24.7)     (74.6)     (73.1)     (51.0)    (122.8)     (54.4)
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
                             (28.4)    (24.7)
 Income before
  extraordinary item
  and cumulative effect
  of accounting
  changes...............      15.9      47.3      181.9      146.0       49.1      197.4       97.2
 Extraordinary item-
  demutualization
  expenses(7)...........       --        --         --       (12.1)      (9.2)      (4.6)       --
 Cumulative effect of
  accounting
  changes(8)............       --        --         --         --        (1.9)     (35.4)       --
                         ---------  --------  ---------  ---------  ---------  ---------  ---------
 Net income............. $    15.9  $   47.3  $   181.9  $   133.9  $    38.0  $   157.4  $    97.2
                         =========  ========  =========  =========  =========  =========  =========
 Net income per
  share(9).............. $    0.32  $   0.94  $    3.63  $    2.61  $      --  $      --  $      --
                         =========  ========  =========  =========  =========  =========  =========
Adjusted Net
 Income(10)............. $    33.2  $   25.5  $   137.9  $   116.4  $    90.4  $   119.1  $   109.9
                         =========  ========  =========  =========  =========  =========  =========
</TABLE>
 
                                      27
<PAGE>
 
<TABLE>
<S>                       <C>       <C>      <C>       <C>       <C>       <C>       <C>
BALANCE SHEET DATA (AT
 PERIOD END):
Total assets............  $19,625.6 18,162.7 $18,997.7 $17,757.7 $15,921.5 $15,378.4 $14,083.1
Long-term debt..........      202.2    202.2     202.2     202.3       2.7       --        --
Total liabilities.......   16,871.2 15,872.3  16,489.0  15,425.0  14,299.4  13,711.7  12,764.1
Minority interest:
 Company obligated
  mandatorily redeemable
  securities of
  subsidiary trust......      300.0      --        --        --        --        --        --
 Common Stock(6)........      782.4    734.5     784.0     758.5     629.7     615.8     422.4
Equity..................    1,672.0  1,555.9   1,724.7   1,574.2     992.4   1,050.9     896.6
ADDITIONAL DATA:
Book value per
 share(9)...............  $   33.35 $  31.03 $   34.40 $   31.40       --        --        --
Ratio of earnings to
 fixed charges(11)......       4.3x     8.5x      8.7x     13.4x     10.6x     33.4x     14.7x
Statutory combined
 ratios(12)
 Property and Casualty
  Insurance
  Subsidiaries..........  $   105.2 $  105.8     104.5     101.0     105.3     102.7     104.5
 Property and Casualty
  Industry..............        --       --      107.0     106.5     108.5     106.9     115.8
Cash dividends declared
 per share..............  $    0.05     0.05 $    0.20 $    0.05       --        --        --
</TABLE>
- --------
 (1) Net realized gains include (benefits) provisions for investment losses of
     $(0.3) million and $1.3 million for the first three months of 1997 and
     1996, respectively, and $5.5 million, $2.5 million, $19.5 million, $19.8
     million and $22.8 million, in 1996, 1995, 1994, 1993 and 1992,
     respectively. These provisions were primarily related to reserves and
     writedowns of mortgage loan and real estate investments. Also included in
     this item in 1995 is a $20.7 million gain from the sale of the Company's
     mutual fund servicing business. In addition, in 1993, a gain of $35.7
     million from the sale of the Company's wholly owned subsidiary, Beacon
     Insurance Company of America ("Beacon"), and a gain of $62.9 million from
     an initial public offering of 19.4% of Citizens' Common Stock, is
     included.
 (2) Other income primarily includes fee income from the Company's non-
     insurance businesses, such as mutual fund services, institutional 401(k)
     recordkeeping services and other fee income from the Company's insurance
     segments, such as administrative services fees in the Company's Corporate
     Risk Management Services ("CRMS") segment. Also included in other income
     for the three months ended March 31, 1997 and 1996 and the years ended
     December 31, 1996 and 1995 is income from the Closed Block totaling $5.5
     million, $3.4 million, $8.6 million and $2.9 million, respectively.
 (3) The Company sold its mutual fund servicing business during the first
     quarter of 1995, which represented $13.7 million, or 14.4%, of other
     income and $15.5 million in direct expenses during the year ended
     December 31, 1995 and $42.5 million, or 37.8%, of other income and $49.3
     million in direct expenses during the year ended December 31, 1994.
 (4) In April 1997, the Company, through its wholly owned subsidiary AFLIAC,
     entered into a letter of intent for the 100% coinsurance of its
     disability income line of business. The consummation of the transaction
     is subject to a number of conditions, including the negotiation and
     execution of definitive documentation and the receipt of regulatory
     approvals. The proposed transaction has resulted in the recognition of a
     $53.9 million pre-tax loss for the three months ended March 31, 1997.
 (5) Other operating expenses include all general and administrative expenses,
     as well as the operating expenses resulting from the Company's non-
     insurance businesses, such as mutual fund services, institutional 401(k)
     recordkeeping services and investment advisory services.
 (6) The Company's interest in Allmerica P&C, through its wholly owned
     subsidiary SMA Financial Corp., was represented by ownership of 59.5%,
     59.5%, 59.2%, 58.3%, and 57.4% of the outstanding shares of Allmerica P&C
     common stock at March 31, 1997, December 31, 1996, March 31, 1996,
     December 31, 1995 and 1994, respectively. Allmerica P&C had ownership
     interests of 82.5%, 82.5%, 81.4%, 81.1% and 80.6% in Citizens at March
     31, 1997, December 31, 1996, March 31, 1996, December 31, 1995 and 1994,
     respectively. Earnings and stockholders' equity attributable to minority
     shareholders are included in minority interest in the consolidated
     financial statements.
 (7) Demutualization expenses relate to costs associated with conversion from
     a mutual life insurance company to a stock life insurance company. The
     demutualization resulted in the issuance of 37.5 million shares of
     Company Common Stock. Concurrent with the demutualization was an initial
     public offering which resulted in issuance of an additional 12.6 million
     shares of Company Common Stock. The demutualization and initial public
     offering occurred during the quarter ended December 31, 1995.
 
                                      28
<PAGE>
 
 (8) In 1993, the Company adopted the provisions of Statement of Financial
     Accounting Standards ("SFAS") No. 106, "Employers' Accounting for
     Postretirement Benefits Other Than Pension" ("SFAS No. 106"), which
     requires recognition of a liability for health and life insurance
     benefits expected to be provided to employees after retirement. Adoption
     of this statement resulted in a charge to net income of $35.4 million,
     after taxes of $23.5 million and minority interest of $10.2 million, as a
     cumulative effect of a change in accounting principle. In 1994, the
     Company adopted the provisions of SFAS No. 112, "Employers' Accounting
     for Postemployment Benefits" ("SFAS No. 112"), which requires employers
     to recognize the costs of postemployment benefits over the service period
     of the employees. Adoption of this statement resulted in a charge to net
     income of $1.9 million, after taxes of $1.5 million, and minority
     interest of $0.9 million, as a cumulative effect of a change in
     accounting principle.
 (9) Net income per share and book value per share for the three months ended
     March 31, 1997 and 1996 and for the year ended December 31, 1996 are
     based on a weighted average of the number of shares outstanding for the
     three months ended March 31, 1997 and 1996 and for the year ended
     December 31, 1996, respectively. The net income per share and book value
     per share for the year ended December 31, 1995 are unaudited and are pro
     forma based on a weighted average of the number of shares that would have
     been outstanding between January 1, 1995 and December 31, 1995 had the
     demutualization transaction and the initial public offering of Company
     Common Stock occurred as of January 1, 1995, and does not represent a
     projection or forecast of the Company's consolidated results of
     operations for any future period.
 (10) Adjusted net income represents net income adjusted to eliminate certain
      items which management believes are not indicative of overall operating
      trends, including net realized gains and losses on the sales of
      investments, the cumulative effect of accounting changes, extraordinary
      items, loss from the cession of the disability income business, gains on
      sales of interests in subsidiaries and the differential earnings tax
      adjustment. Company management believes adjusted net income enhances an
      investor's understanding of the Company's results of operations by
      highlighting net income attributable to the normal, recurring operations
      of the business. However, adjusted net income is not a substitute for
      net income determined in accordance with generally accepted accounting
      principles and should be considered together with the Company's
      financial statements.
(11) For purposes of determining the historical ratios of earnings to fixed
     charges, earnings consists of earnings before federal income taxes and
     minority interest plus interest expense on Company indebtedness and the
     portion of operating lease rentals representative of the interest factor.
     Fixed charges consist of interest expense on Company indebtedness,
     dividends on Company-obligated manditorily redeemable preferred
     securities of subsidiary trust recorded as minority interest before
     provision for federal income taxes, plus the portion of operating lease
     rentals representative of the interest factor.
(12) The amounts presented reflect ratios after policyholder dividends. The
     industry combined ratios are not available for the three months ended
     March 31, 1997 and 1996. Industry combined ratios before policyholder
     dividends were 105.0, 107.1, 105.7 and 114.6 for the years ended December
     31, 1995, 1994, 1993 and 1992, respectively. Industry combined ratios
     before policyholder dividends are not yet published for 1996. Industry
     averages are from A.M. Best.
 
                                      29
<PAGE>
 
                         UNAUDITED PRO FORMA CONDENSED
                      CONSOLIDATED FINANCIAL INFORMATION
 
  The unaudited pro forma consolidated financial information (the "Pro Forma
Information") of the Company presented below is based upon its consolidated
financial statements, which include the accounts of Allmerica P&C, as adjusted
to give effect to the Merger. See "The Company--Recent Developments." The
unaudited pro forma condensed consolidated statement of income for the three
months ended March 31, 1997 and for the year ended December 31, 1996 give
effect to the Merger and the offering of the Old Capital Securities (the
"Offering," and together with the Merger, the "Transactions") as if each had
occurred at the beginning of 1997 and 1996, respectively, and is based on the
consolidated statement of income of the Company for such period. The unaudited
pro forma condensed consolidated balance sheet at March 31, 1997 gives effect
to the Transactions as if each had occurred on such date and is based on the
consolidated balance sheet of the Company as of March 31, 1997.
 
  The Pro Forma Information is based on available information and on
assumptions management believes are reasonable and that reflect the effects of
the Transactions. The Pro Forma Information is provided for informational
purposes only and should not be construed to be indicative of the Company's
consolidated financial position or its results of operations had the
transactions been consummated on the dates assumed and does not in any way
represent a projection or forecast of the Company's consolidated financial
position or consolidated results of operations for any future date or period.
The Pro Forma Information should be read in conjunction with the Company's
historical consolidated financial statements and the notes thereto included
elsewhere in this Prospectus and with the information set forth under "The
Company--Recent Developments" as well as the Company's audited consolidated
financial statements and unaudited interim consolidated financial statements
including the notes thereto, the Company's management discussion and analysis
of financial condition and results of operations and the Company's description
of business, which are incorporated by reference into this Prospectus. See
"Incorporation of Certain Documents by Reference."
 
                                      30
<PAGE>
 
         UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF INCOME
                       THREE MONTHS ENDED MARCH 31, 1997
 
<TABLE>
<CAPTION>
                            HISTORICAL               PRO FORMA(1)
                            ---------- ----------------------------------------
                                         ADJUSTMENTS
                                       RELATING TO THE   ADJUSTMENTS
                                           CAPITAL     RELATING TO THE ADJUSTED
                               AFC       SECURITIES        MERGER      BALANCE
                            ---------- --------------- --------------- --------
                                   (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                         <C>        <C>             <C>             <C>
REVENUES
  Premiums.................   $562.3                                    $562.3
  Universal life and
   investment product
   policy fees.............     56.3                                      56.3
  Net investment income....    163.4                         (1.6)(2)
                                                             (4.5)(10)   157.3
  Net realized investment
   gains...................     44.0                                      44.0
  Other income.............     28.9                                      28.9
                              ------                        -----       ------
    Total revenues.........    854.9                         (6.1)       848.8
                              ------                        -----       ------
BENEFITS, LOSSES AND
 EXPENSES
  Policy benefits, claims,
   losses and loss
   adjustment expenses.....    492.3                          0.1 (3)    492.4
  Policy acquisition
   expenses................    119.8                                     119.8
  Loss from cession of
   disability income
   business................     53.9                                      53.9
  Other operating
   expenses................    134.9                          1.2 (4)    136.1
                              ------                        -----       ------
    Total benefits, losses
     and expenses..........    800.9                          1.3        802.2
                              ------                        -----       ------
Income before federal
 income taxes..............     54.0                         (7.4)        46.6
Federal income tax expense
 (benefit).................      9.7                         (2.0)(5)      7.7
                              ------                        -----       ------
Income before minority
 interest..................     44.3                         (5.4)        38.9
                              ------                        -----       ------
Minority interest
  Dividends on Company-
   obligated mandatorily
   redeemable preferred
   securities of subsidiary
   trust...................     (2.4)        (1.6)(6)                     (4.0)
  Equity in earnings.......    (26.0)                        21.0 (7)     (5.0)
                              ------        -----           -----       ------
    Total minority
     interest..............    (28.4)        (1.6)           21.0         (9.0)
                              ------        -----           -----       ------
Net income(8)..............   $ 15.9        $(1.6)          $15.6       $ 29.9
                              ======        =====           =====       ======
PER SHARE DATA
  Net income...............   $ 0.32                                    $ 0.50
                              ------                                    ------
Shares used in calculating
 per common share
 amounts(9)................     50.2                                      59.9
                              ------                                    ------
</TABLE>
 
                                       31
<PAGE>
 
         UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF INCOME
                          YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                            HISTORICAL               PRO FORMA(1)
                            ---------- ----------------------------------------
                                         ADJUSTMENTS
                                       RELATING TO THE   ADJUSTMENTS
                                           CAPITAL     RELATING TO THE ADJUSTED
                               AFC       SECURITIES        MERGER      BALANCE
                            ---------- --------------- --------------- --------
                                   (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                         <C>        <C>             <C>             <C>
REVENUES
  Premiums................   $2,236.3                                  $2,236.3
  Universal life and
   investment product
   policy fees............      197.2                                     197.2
  Net investment income...      672.6                        (9.0)(2)     655.6
                                                             (8.0)(10)
  Net realized investment
   gains..................       65.9                                      65.9
  Other income............      102.7                                     102.7
                             --------                       -----      --------
    Total revenues........    3,274.7                       (17.0)      3,257.7
                             --------                       -----      --------
BENEFITS, LOSSES AND
 EXPENSES
  Policy benefits, claims,
   losses and loss
   adjustment expenses....    1,957.0                         0.4 (3)   1,957.4
  Policy acquisition
   expenses...............      483.5                                     483.5
  Other operating
   expenses...............      502.5                         5.4 (4)     507.9
                             --------                       -----      --------
    Total benefits, losses
     and expenses.........    2,943.0                         5.8       2,948.8
                             --------                       -----      --------
Income before federal
 income taxes.............      331.7                       (22.8)        308.9
Federal income tax expense
 (benefit)................       75.2                        (5.3)(5)      69.9
                             --------                       -----      --------
Income before minority
 interest.................      256.5                       (17.5)        239.0
                             --------                       -----      --------
Minority interest
  Dividends on Company-
   obligated mandatorily
   redeemable preferred
   securities of
   subsidiary trust.......        --        (16.0)(6)                     (16.0)
  Equity in earnings......      (74.6)                       59.7 (7)     (14.9)
                             --------      ------           -----      --------
    Total minority
     interest.............      (74.6)      (16.0)           59.7         (30.9)
                             --------      ------           -----      --------
Net income(8).............   $  181.9      $(16.0)          $42.2      $  208.1
                             ========      ======           =====      ========
PER SHARE DATA
  Net income..............   $   3.63                                  $   3.48
                             --------                                  --------
Shares used in calculating
 per common share
 amounts(9)...............       50.1                                      59.8
                             --------                                  --------
</TABLE>
 
                                       32
<PAGE>
 
            UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                                 MARCH 31, 1997
 
<TABLE>
<CAPTION>
                                                       PRO FORMA(1)
                                                 --------------------------
                                                   ADJUSTMENTS
                                      HISTORICAL RELATING TO THE  ADJUSTED
                                         AFC         MERGER        BALANCE
                                      ---------- ---------------  ---------
                                                   (IN MILLIONS)
<S>                                   <C>        <C>              <C>       
ASSETS
 Investments:
 Fixed maturities, at fair value..... $ 7,358.2                   $ 7,358.2
 Equity securities, at fair value....     381.6                       381.6
 Mortgage loans......................     646.5                       646.5
 Real estate.........................     100.9                       100.9
 Policy loans........................     135.8                       135.8
 Other long-term investments.........     135.3                       135.3
                                      ---------                   ---------
   Total investments.................   8,758.3                     8,758.3
 Cash and cash equivalents...........     553.3       (425.5)(10)     127.8
 Accrued investment income...........     151.8                       151.8
 Deferred policy acquisition costs...     831.4                       831.4
 Reinsurance receivables.............     841.4                       841.4
 Deferred federal income taxes.......     122.6        (24.4)(11)      98.2
 Premiums, accounts and notes
  receivable.........................     542.5                       542.5
 Goodwill............................       --         143.8 (12)     143.8
 Other assets........................     314.8                       314.8
 Closed Block assets.................     803.7                       803.7
 Separate account assets.............   6,705.8                     6,705.8
                                      ---------      -------      ---------
   Total assets...................... $19,625.6      $(306.1)     $19,319.5
                                      ---------      -------      ---------
LIABILITIES AND SHAREHOLDERS' EQUITY
LIABILITIES
 Policy liabilities and accruals:
 Future policy benefits.............. $ 2,610.7                   $ 2,610.7
 Outstanding claims, losses and loss
  adjustment expenses................   2,890.0                     2,890.0
 Unearned premiums...................     828.0                       828.0
 Contractholder deposit funds and
  other policy liabilities...........   1,926.9                     1,926.9
                                      ---------                   ---------
   Total policy liabilities and
    accruals.........................   8,255.6                     8,255.6
 Expenses and taxes payable..........     712.5         (9.0)(13)     703.5
 Reinsurance premiums payable........      30.1                        30.1
 Short-term debt.....................      67.6                        67.6
 Deferred federal income taxes.......      19.1        (19.1)(11)       --
 Long-term debt......................     202.2                       202.2
 Closed Block liabilities............     883.9                       883.9
 Separate account liabilities........   6,700.2                     6,700.2
                                      ---------      -------      ---------
   Total liabilities.................  16,871.2        (28.1)      16,843.1
                                      ---------      -------      ---------
MINORITY INTEREST
 Company-obligated mandatorily
  redeemable preferred securities of
  subsidiary trust...................     300.0                       300.0
 Common stock........................     782.4       (650.3)(14)     132.1
                                      ---------      -------      ---------
   Total minority interest...........   1,082.4       (650.3)         432.1
                                      ---------      -------      ---------
SHAREHOLDERS' EQUITY
 Preferred stock.....................       --                          --
 Common stock........................       0.5          0.1 (15)       0.6
 Additional paid-in capital..........   1,378.8        372.2 (15)   1,751.0
 Unrealized appreciation on
  investments, net...................      69.2                        69.2
 Retained earnings...................     223.5                       223.5
                                      ---------      -------      ---------
   Total shareholders' equity........   1,672.0        372.3        2,044.3
                                      ---------      -------      ---------
     Total liabilities and
      shareholders' equity........... $19,625.6      $(306.1)     $19,319.5
                                      =========      =======      =========
</TABLE>
 
                                       33
<PAGE>
 
 (1) The unaudited pro forma condensed consolidated balance sheet consolidates
     the historical balance sheet of the Company, which includes the accounts
     of Allmerica P&C and the interest of Allmerica P&C Public Stockholders,
     as if the Merger had been consummated on March 31, 1997. The pro forma
     condensed consolidated statements of income for the three months ended
     March 31, 1997 and for the year ended December 31, 1996 consolidate the
     historical statements of income of the Company, which include the
     accounts of Allmerica P&C and the interest of Allmerica P&C Public
     Stockholders, as if the Merger had been consummated on January 1, 1997
     and January 1, 1996, respectively.
     The Merger will be accounted for by the purchase method of accounting as a
     step purchase. Accordingly, the Company's cost to acquire the minority
     interest in Allmerica P&C, calculated to be $797.8 million based on a
     Company average Common Stock price of $38.50 per share, will be allocated
     to the assets acquired and liabilities assumed according to their
     respective fair values, with the excess Merger Consideration being
     allocated to goodwill. Applicable income tax effects of such adjustments
     are included as a component of the Company's net deferred tax asset.
     Certain transactions conducted in the ordinary course of business between
     the Company and Allmerica P&C are immaterial and, accordingly, have not
     been eliminated.
     Notwithstanding that the Merger Consideration is subject to change to the
     extent of fluctuations in the Average Stock Price, subsequent changes in
     the Company's market share price will not affect the measurement of the
     cost of the transaction for accounting purposes. The unaudited pro forma
     condensed consolidated financial information has been prepared based on a
     Company average market price of $38.50, corresponding to the announcement
     of the Merger on February 19, 1997. The final allocation of the Merger
     Consideration is dependent upon certain valuations and other studies that
     have not progressed to a stage where there is sufficient information to
     make such an allocation in the accompanying unaudited pro forma condensed
     consolidated financial statements. Accordingly, the purchase allocation
     adjustments made in connection with the development of the unaudited pro
     forma condensed consolidated financial statements are preliminary and have
     been made solely for the purpose of developing such unaudited pro forma
     consolidated financial statements.
     The $143.8 million pro forma excess of Merger Consideration over net
     tangible assets acquired as of March 31, 1997 would be amortized over 40
     years at a rate of $3.6 million per year, in accordance with generally
     accepted accounting principles, which require that acquired intangible
     assets be amortized over lives not to exceed 40 years. After consummation
     of the Merger, the Company anticipates completion of the valuations and
     other studies of the significant assets, liabilities and business
     operations of Allmerica P&C. These valuations and other studies include
     determination of the fair value of Allmerica P&C's pension plans and
     investment portfolio, as well as the final determination of the Company's
     acquisition costs resulting from the Merger. Using this information, the
     Company will make a final allocation of the Merger Consideration,
     including allocation to tangible assets and liabilities, identifiable
     intangible assets and goodwill. The Company believes that any significant
     allocation of excess Merger Consideration to assets other than goodwill
     will be amortized over periods approximating the assets' remaining useful
     lives. The amortization periods used in preparing the unaudited pro forma
     consolidated financial statements are not expected to change materially at
     the consummation of the Merger.
     The future results of operations of the Company will reflect increased
     amortization of intangible assets which are non-deductible for tax
     purposes. The future financial position of the Company will reflect
     increased intangible assets as described above and increased shareholders'
     equity resulting from the issuance of approximately 9.7 million shares of
     Company Common Stock to Allmerica P&C Public Stockholders.
 (2) Represents amortization or accretion of purchased premium or discount,
     respectively, on fixed maturities over the estimated remaining life of
     the securities. Net investment income is adjusted to include the effect
     of restating the historical yield on fixed maturity securities to the
     estimated market yield as of the beginning of the period. The change to a
     market yield is estimated by referencing Hanover's and Citizens'
     unrealized gain or loss on fixed maturities at the beginning of the
     period, amortized over the estimated life of the portfolio (5 years).
 
                                      34
<PAGE>
 
 (3) Represents 40% of the elimination of the amortization of unrecognized
     transition, prior service and other costs recognized in fair value
     purchase accounting adjustment for Hanover's and Citizens' pension plans.
     The remaining 60% of the elimination is an adjustment to other operating
     expense. The 40%-60% allocation is based on the percentage of total
     salary expense charged to losses and loss adjustment expenses and other
     operating expenses.
 (4) Represents (i) amortization over 40 years of goodwill resulting from this
     transaction of $0.9 million for the three months ended March 31, 1997 and
     $4.1 million for the year ended December 31, 1996 and (ii) 60% of the
     elimination of the amortization of unrecognized transition, prior service
     and other costs recognized in fair value purchase accounting adjustments
     for Hanover's and Citizens' pension plans of $0.1 million for the three
     months ended March 31, 1997 and $0.6 million for the year ended December
     31, 1996 (the remaining 40% of the elimination is an adjustment to policy
     benefits, claims, losses and loss adjustment expenses) and (iii)
     elimination of the amortization of unrecognized transition, prior service
     and other costs recognized in fair value purchase accounting adjustments
     for Hanover and Citizens post-retirement benefit plans of $0.2 million
     for the three months ended March 31, 1997 and $0.7 million for the year
     ended December 31, 1996. The 60%- 40% allocation is based on the
     percentage of total salary expense charged to adjustment policy benefits,
     claims, losses and loss adjustment expenses and other operating expenses.
 (5) Represents the income tax benefit of the above adjustments except
     amortization of goodwill, which is non-deductible for tax purposes. The
     income tax benefits of adjustments to net investment income discussed in
     Note (10) which relate to reduced cash at Allmerica P&C are at 18.5% for
     the three months ended March 31, 1997 and 19.4% for the year ended
     December 31, 1996, respectively, which represents the effective tax rate
     on Allmerica P&C's investment portfolio. The income tax benefit of all
     other adjustments, except goodwill, is at 35%.
 (6) The Company, through a subsidiary trust, on February 3, 1997, issued
     mandatorily redeemable preferred securities with a liquidation amount
     totaling $300.0 million due 2027, which accrue dividends at an annual
     rate of 8.207%. Adjustments represent accrued dividends on these
     securities of a subsidiary trust, net of federal income taxes at 35%, as
     if such securities had been issued at the beginning of each period
     presented. Distributions are payable on these securities on February 15
     and August 15 of each year.
 (7) Represents elimination of the minority interest expense associated with
     the Company's interest in Allmerica P&C on the Company's consolidated
     statement of income.
 (8) The following ratios of earnings to fixed charges are derived from the
     historical Consolidated Statements of Income and the Unaudited Pro Forma
     Condensed Consolidated Statements of Income:
 
<TABLE>
<CAPTION>
                                          THREE MONTHS ENDED    YEAR ENDED
                                            MARCH 31, 1997   DECEMBER 31, 1996
                                          ------------------ -----------------
    <S>                                   <C>                <C>
    Historical Ratio of Earnings to
     Fixed Charges(a)...................         4.3x               8.7x
    Pro Forma Ratio of Earnings to Fixed
     Charges(b).........................         3.3x               5.2x
</TABLE>
 
   (a) For purposes of determining the historical ratios of earnings to fixed
       charges, earnings consist of earnings before federal income taxes and
       minority interest plus interest expense on Company indebtedness and
       the portion of operating lease rentals representative of the interest
       factor. Fixed charges consist of interest expense on Company
       indebtedness, dividends on Company-obligated manditorily redeemable
       preferred securities of subsidiary trust recorded as minority interest
       before provision for federal income taxes, plus the portion of
       operating lease rentals representative of the interest factor.
   (b) For purposes of determining the pro forma ratios of earnings to fixed
       charges, earnings consist of pro forma earnings before federal income
       taxes and minority interest plus interest expense on Company
       indebtedness and the portion of operating lease rentals representative
       of the interest factor. Fixed charges consist of interest expense on
       Company indebtedness, pro forma dividends on Company-obligated
       manditorily redeemable preferred securities of subsidiary trust
       recorded as minority interest before provision for federal income
       taxes, plus the portion of operating lease rentals representative of
       the interest factor.
 
                                      35
<PAGE>
 
 (9) The unaudited pro forma condensed consolidated financial statements
     reflect the conversion of each share held by an Allmerica P&C Public
     Stockholder (24.2 million minority-owned shares at March 31, 1997) to 0.4
     shares of Company Common Stock (50.2 million weighted average shares
     outstanding at March 31, 1997), resulting in 59.9 million pro forma
     shares of Company Common Stock outstanding.
  The total market value of the Company Common Stock to be issued in
    connection with the Merger, is calculated as follows (in thousands, except
    the Standard Exchange Ratio and per share data):
 
<TABLE>
      <S>                                                              <C>
      Allmerica P&C minority-owned common shares outstanding on March
       31, 1997......................................................    24,177
      Standard Exchange Ratio........................................       0.4
                                                                       --------
      Shares of Company Common Stock to be issued....................     9,671
      Average market price per share of Company Common Stock at Feb-
       ruary 19, 1997                                                  $  38.50
                                                                       --------
        Total market value of Company Common Stock to be issued......  $372,334
                                                                       ========
</TABLE>
(10) Reflects cash paid to Allmerica P&C minority shareholders at $17.60 per
     approximately 24.2 million shares. Net investment income is decreased to
     reflect the lower level of cash and cash equivalents at Allmerica P&C,
     based on $129.2 million of cash utilized in the Merger and Allmerica
     P&C's average portfolio yield of 6.11% and 6.19% for the three months
     ended March 31, 1997 and the year ended December 31, 1996, respectively.
     In addition, net investment income is reduced by $2.5 million for the
     three months ended March 31, 1997 for the actual net investment income
     earned on the proceeds from the mandatorily redeemable preferred
     securities.
(11) Reflects the deferred tax effect of adjusting certain pension and post
     retirement benefit liabilities to fair value. Additionally, the Company
     and Allmerica P&C will become a single taxable entity as a result of the
     Merger. Accordingly, the historical deferred tax liability of $19.1
     million, which is related to the Life Insurance Subsidiaries, has been
     netted against the historical deferred tax asset as part of the pro forma
     adjustments.
(12) Consists of the excess of purchase price over the fair value of net
     assets acquired, calculated as follows (in millions):
<TABLE>
      <S>                                                              <C>
      Purchase price.................................................. $ 797.8
      Book value of minority interest in Allmerica P&C................  (650.3)
      Fair market value adjustments on
        Reserve for acquisition costs.................................     6.0
        Accrued pension and post-retirement benefits (net of taxes)...    (9.7)
                                                                       -------
        Net goodwill.................................................. $ 143.8
                                                                       =======
</TABLE>
(13) Consists of a $6.0 million increase resulting from the establishment of a
     reserve for acquisition costs and a $15.0 million decrease resulting from
     adjusting certain pension and postretirement benefit liabilities to fair
     value.
(14) Represents elimination of the Company's historical minority interest
     related to Allmerica P&C.
(15) Reflects issuance of 9.7 million shares of Company Common Stock exchanged
     for 100% of the minority shares of Allmerica P&C Common Stock, as
     described in Note 9 above.
 
                                      36
<PAGE>
 
                                   THE TRUST
 
  The Trust is a statutory business trust formed under Delaware law pursuant
to (i) a declaration of trust, dated as of January 24, 1997, executed by the
Company, as Sponsor (the "Sponsor"), the Delaware Trustee and the
Administrative Trustees named therein (the "Initial Declaration"), and (ii)
the filing of a certificate of trust with the Secretary of State of the State
of Delaware on January 24, 1997. The Initial Declaration was replaced by an
amended and restated declaration of trust executed as of February 3, 1997 by
the Company, as Sponsor, and the Issuer Trustees (as defined herein) (the
"Declaration"). The Trust exists for the exclusive purposes of (i) issuing and
selling the Trust Securities, which represent undivided beneficial interests
in the assets of the Trust, (ii) investing the gross proceeds from the sale of
the Trust Securities in the Junior Subordinated Debentures and (iii) engaging
in only those other activities necessary, advisable or incidental thereto.
Accordingly, the Junior Subordinated Debentures are and will be the sole
assets of the Trust and payments under the Junior Subordinated Debentures will
be the sole revenues of the Trust. All of the Common Securities are owned
directly by the Company. The Common Securities rank pari passu, and any
payments will be made thereon pro rata, with the Capital Securities, except
that upon the occurrence and during the continuance of an Event of Default,
the rights of the Company as holder of the Common Securities to payments in
respect of Distributions and payments upon liquidation, redemption or
otherwise will be subordinated and rank junior to the rights of the holders of
the Capital Securities. See "Description of New Securities--Description of New
Capital Securities--Subordination of Common Securities." The Company has
acquired Common Securities in a Liquidation Amount equal to at least 3% of the
total capital of the Trust. The Trust has a term of 31 years, but may
terminate earlier as provided in the Declaration. The Trust's business and
affairs are conducted by trustees (the "Issuer Trustees") appointed by the
Company as the direct holder of the Common Securities. The Issuer Trustees are
The Chase Manhattan Bank as the Property Trustee (the "Property Trustee"),
Chase Manhattan Bank Delaware as the Delaware Trustee (the "Delaware
Trustee"), and three individual trustees (the "Administrative Trustees"). The
Chase Manhattan Bank, as Property Trustee, is sole indenture trustee under the
Declaration. The Chase Manhattan Bank is also indenture trustee under the
Guarantee and the Indenture. See "Description of New Guarantee" and
"Description of New Junior Subordinated Debentures." The holder of the Common
Securities or, if an Event of Default under the Declaration has occurred and
is continuing, the holders of a majority in Liquidation Amount of the Capital
Securities, will be entitled to appoint, remove or replace the Property
Trustee and/or the Delaware Trustee. In no event will the holders of the
Capital Securities have the right to vote to appoint, remove or replace the
Administrative Trustees; such voting rights will be vested exclusively in the
holder of the Common Securities. The duties and obligations of each Issuer
Trustee are governed by the Declaration and the Delaware Business Trust Act.
The Company will pay directly all fees, reasonable expenses, disbursements and
advancements (other than the Trust Securities) related to the Trust and the
offering of the Capital Securities, including all ongoing costs, expenses and
liabilities of the Trust.
 
  The principal place of business of the Trust is c/o Allmerica Financial
Corporation, 440 Lincoln Street, Worcester, Massachusetts 01653 Attention:
Chief Financial Officer.
 
                              THE EXCHANGE OFFER
 
PURPOSE OF THE EXCHANGE OFFER
 
  In connection with the sale of the Old Capital Securities, the Company and
the Trust entered into the Registration Rights Agreement with the Initial
Purchasers, pursuant to which the Company and the Trust agreed to file with
the Commission and to use their reasonable efforts to cause to become
effective a registration statement with respect to the exchange of the Old
Capital Securities for the New Capital Securities. A copy of the Registration
Rights Agreement has been filed as an Exhibit to the Registration Statement of
which this Prospectus is a part.
 
  The Exchange Offer is being made to satisfy the contractual obligations of
the Company and the Trust under the Registration Rights Agreement. The form
and terms of the New Capital Securities are the same as the form
 
                                      37
<PAGE>
 
and terms of the Old Capital Securities except that the New Capital Securities
have been registered under the Securities Act and will not be subject to the
$100,000 minimum Liquidation Amount transfer restriction and certain other
transfer restrictions applicable to the Old Capital Securities and will not
provide for any increase in the Distribution rate thereon. In that regard, the
Old Capital Securities provide, among other things, that, if a registration
statement relating to the Exchange Offer has not been filed with the
Commission by July 3, 1997 or has not been declared effective by August 2,
1997, the Distribution rate borne by the Old Capital Securities, currently
8.207%, commencing on August 3, 1997 will increase by 0.25% per annum until
the Exchange Offer is consummated. Upon consummation of the Exchange Offer,
holders of Old Capital Securities will not be entitled to any increase in the
Distribution rate thereon or any further registration rights under the
Registration Rights Agreement, except under limited circumstances. See "Risk
Factors--Consequences of a Failure to Exchange Old Capital Securities" and
"Description of Old Capital Securities."
 
  The Exchange Offer is not being made to, nor will the Trust accept tenders
for exchange from, holders of Old Capital Securities in any jurisdiction in
which the Exchange Offer or the acceptance thereof would not be in compliance
with the securities or blue sky laws of such jurisdiction.
 
  Unless the context requires otherwise, the term "holder" with respect to the
Exchange Offer means any person in whose name the Old Capital Securities are
registered on the books of the Trust or any other person who has obtained a
properly completed bond power from such holder, or any participant in The
Depository Trust Company ("DTC") system whose name appears on a security
position listing as the holder of such Old Capital Securities and who desires
to deliver such Old Capital Securities by book-entry transfer at DTC.
 
  Pursuant to the Exchange Offer, the Company will exchange promptly after the
Expiration Date, the Old Guarantee for the New Guarantee and the Old Junior
Subordinated Debentures, in an amount corresponding to the Old Capital
Securities accepted for exchange, for a like aggregate principal amount of the
New Junior Subordinated Debentures. The New Guarantee and New Junior
Subordinated Debentures have been registered under the Securities Act.
 
TERMS OF THE EXCHANGE OFFER
 
  The Trust hereby offers, upon the terms and subject to the conditions set
forth in this Prospectus and in the accompanying Letter of Transmittal, to
exchange up to $300,000,000 aggregate Liquidation Amount of New Capital
Securities for a like aggregate Liquidation Amount of Old Capital Securities
properly tendered on or prior to the Expiration Date and not properly
withdrawn in accordance with the procedures described below. The Trust will
issue, promptly after the Expiration Date, an aggregate Liquidation Amount of
up to $300,000,000 of New Capital Securities in exchange for a like principal
amount of outstanding Old Capital Securities tendered and accepted in
connection with the Exchange Offer. Holders may tender their Old Capital
Securities in whole or in part in a Liquidation Amount of not less than
$100,000 (100 Capital Securities) or any integral multiple of $1,000
Liquidation Amount (one Capital Security) in excess thereof.
 
  The Exchange Offer is not conditioned upon any minimum Liquidation Amount of
Old Capital Securities being tendered. As of the date of this Prospectus,
$300,000,000 aggregate Liquidation Amount of Old Capital Securities is
outstanding.
 
  Holders of Old Capital Securities do not have any appraisal or dissenters'
rights in connection with the Exchange Offer. Old Capital Securities which are
not tendered for or are tendered but not accepted in connection with the
Exchange Offer will remain outstanding and be entitled to the benefits of the
Declaration, but will not be entitled to any further registration rights under
the Registration Rights Agreement, except under limited circumstances. See
"Risk Factors--Consequences of a Failure to Exchange Old Capital Securities"
and "Description of Old Securities."
 
  If any tendered Old Capital Securities are not accepted for exchange because
of an invalid tender, the occurrence of certain other events set forth herein
or otherwise, certificates for any such unaccepted Old Capital Securities will
be returned, without expense, to the tendering holder thereof promptly after
the Expiration Date.
 
                                      38
<PAGE>
 
  Holders who tender Old Capital Securities in connection with the Exchange
Offer will not be required to pay brokerage commissions or fees or, subject to
the instructions in the Letter of Transmittal, transfer taxes with respect to
the exchange of Old Capital Securities in connection with the Exchange Offer.
The Company will pay all charges and expenses, other than certain applicable
taxes described below, in connection with the Exchange Offer. See "--Fees and
Expenses" below.
 
  NEITHER THE COMPANY, THE BOARD OF DIRECTORS OF THE COMPANY NOR ANY ISSUER
TRUSTEE OF THE TRUST MAKES ANY RECOMMENDATION TO HOLDERS OF OLD CAPITAL
SECURITIES AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING ALL OR ANY
PORTION OF THEIR OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER. IN
ADDITION, NO ONE HAS BEEN AUTHORIZED TO MAKE ANY SUCH RECOMMENDATION. HOLDERS
OF OLD CAPITAL SECURITIES MUST MAKE THEIR OWN DECISION WHETHER TO TENDER
PURSUANT TO THE EXCHANGE OFFER AND, IF SO, THE AGGREGATE AMOUNT OF OLD CAPITAL
SECURITIES TO TENDER BASED ON SUCH HOLDERS OWN FINANCIAL POSITION AND
REQUIREMENTS.
 
  The term "Expiration Date" means 5:00 p.m., New York City time, on    , 1997
unless the Exchange Offer is extended by the Company or the Trust (in which
case the term "Expiration Date" shall mean the latest date and time to which
the Exchange Offer is extended).
 
  The Company and the Trust expressly reserve the right in their sole and
absolute discretion, subject to applicable law, at any time and from time to
time, (i) to delay the acceptance of the Old Capital Securities for exchange,
(ii) to terminate the Exchange Offer (whether or not any Old Capital
Securities have theretofore been accepted for exchange) if the Trust
determines, in its sole and absolute discretion, that any of the events or
conditions referred to under "--Conditions to the Exchange Offer" have
occurred or exist or have not been satisfied, (iii) to extend the Expiration
Date of the Exchange Offer and retain all Old Capital Securities tendered
pursuant to the Exchange Offer, subject, however, to the right of holders of
Old Capital Securities to withdraw their tendered Old Capital Securities as
described under "--Withdrawal Rights," and (iv) to waive any condition or
otherwise amend the terms of the Exchange Offer in any respect. If the
Exchange Offer is amended in a manner determined by the Company and the Trust
to constitute a material change, or if the Company and the Trust waive a
material condition of the Exchange Offer, the Company and the Trust will
promptly disclose such amendment by means of a prospectus supplement that will
be distributed to the holders of the Old Capital Securities, and the Company
and the Trust will extend the Exchange Offer to the extent required by Rule
14e-1 under the Exchange Act.
 
  Any such delay in acceptance, extension, termination or amendment will be
followed promptly by oral (promptly confirmed in writing) or written notice
thereof to the Exchange Agent and by making a public announcement thereof, and
such announcement in the case of an extension will be made no later than 9:00
a.m., New York City time, on the next business day after the previously
scheduled Expiration Date. Without limiting the manner in which the Company
and the Trust may choose to make any public announcement and subject to
applicable law, the Company and the Trust shall have no obligation to publish,
advertise or otherwise communicate any such public announcement other than by
issuing a release to an appropriate news agency.
 
ACCEPTANCE FOR EXCHANGE AND ISSUANCE OF NEW CAPITAL SECURITIES
 
  Upon the terms and subject to the conditions of the Exchange Offer, the
Trust will exchange, and will issue to the Exchange Agent, New Capital
Securities for Old Capital Securities validly tendered and not withdrawn
promptly after the Expiration Date.
 
  In all cases, delivery of New Capital Securities in exchange for Old Capital
Securities tendered and accepted for exchange pursuant to the Exchange Offer
will be made only after timely receipt by the Exchange Agent of (i) Old
Capital Securities or a book-entry confirmation of a book-entry transfer of
Old Capital Securities into the Exchange Agent's account at DTC, (ii) the
Letter of Transmittal (or facsimile thereof), properly completed and
 
                                      39
<PAGE>
 
duly executed, with any required signature guarantees or (in case of a book-
entry transfer) an Agent's Message in lieu of the Letter of Transmittal, and
(iii) any other documents required by the Letter of Transmittal.
 
  The term "book-entry confirmation" means a timely confirmation of a book-
entry transfer of Old Capital Securities into the Exchange Agent's account at
DTC. The term "Agent's Message" means a message, transmitted by DTC to and
received by the Exchange Agent and forming a part of book-entry confirmation,
which states that DTC has received an express acknowledgment from the
tendering participant, which acknowledgment states that such participant has
received and agrees to be bound by the Letter of Transmittal and that the
Trust and the Company may enforce such Letter of Transmittal against such
participant.
 
  Subject to the terms and conditions of the Exchange Offer, the Trust will be
deemed to have accepted for exchange, and thereby exchanged, Old Capital
Securities validly tendered and not withdrawn as, if and when the Trust gives
oral (promptly confirmed in writing) or written notice to the Exchange Agent
of the Trust's acceptance of such Old Capital Securities for exchange pursuant
to the Exchange Offer. The Exchange Agent will act as agent for the Trust for
the purpose of receiving tenders of Old Capital Securities, Letters of
Transmittal and related documents, and as agent for tendering holders for the
purpose of receiving Old Capital Securities, Letters of Transmittal and
related documents and transmitting New Capital securities to validly tendering
holders. Such exchange will be made promptly after the Expiration Date. If for
any reason whatsoever, acceptance for exchange or the exchange of any Old
Capital Securities tendered pursuant to the Exchange Offer is delayed (whether
before or after the Trust's acceptance for exchange of Old Capital Securities)
or the Trust extends the Exchange Offer or is unable to accept for exchange or
exchange Old Capital Securities tendered pursuant to the Exchange Offer, then,
without prejudice to the Trust's rights set forth herein, the Exchange Agent
may, nevertheless, on behalf of the Trust and subject to Rule 14e-1(c) under
the Exchange Act, retain tendered Old Capital Securities and such Old Capital
Securities may not be withdrawn except to the extent tendering holders are
entitled to withdrawal rights as described under "--Withdrawal Rights."
 
  Pursuant to the Letter of Transmittal or Agent's Message in lieu thereof, a
holder of Old Capital Securities will warrant and agree in the Letter of
Transmittal that it has full power and authority to tender, exchange, sell,
assign and transfer Old Capital Securities, that the Trust will acquire good,
marketable and unencumbered title to the tendered Old Capital Securities, free
and clear of all liens, restrictions, charges and encumbrances, and the Old
Capital Securities tendered for exchange are not subject to any adverse claims
or proxies. The holder also will warrant and agree that it will, upon request,
execute and deliver any additional documents deemed by the Trust or the
Exchange Agent to be necessary or desirable to complete the exchange, sale,
assignment, and transfer of the Old Capital Securities tendered pursuant to
the Exchange Offer.
 
PROCEDURES FOR TENDERING OLD CAPITAL SECURITIES
 
 Valid Tender
 
  Except as set forth below, in order for Old Capital Securities to be validly
tendered pursuant to the Exchange Offer, a properly completed and duly
executed Letter of Transmittal (or facsimile thereof), with any required
signature guarantees or (in the case of a book-entry transfer) an Agent's
Message in lieu of the Letter of Transmittal and any other required documents,
must be received by the Exchange Agent at one of its addresses set forth under
"--Exchange Agent," and either (i) tendered Old Capital Securities must be
received by the Exchange Agent, or (ii) such Old Capital Securities must be
tendered pursuant to the procedures for book-entry transfer set forth below
and a book-entry confirmation, including an Agent's Message if the tendering
holder has not delivered a Letter of Transmittal, must be received by the
Exchange Agent, in each case on or prior to the Expiration Date, or (iii) the
guaranteed delivery procedures set forth below must be complied with.
 
  If less than all of the Old Capital Securities are tendered, a tendering
holder should fill in the amount of Old Capital Securities being tendered in
the appropriate box on the Letter of Transmittal or so indicate in an Agent's
Message in lieu of the Letter of Transmittal. The entire amount of Old Capital
Securities delivered to the Exchange Agent will be deemed to have been
tendered.
 
                                      40
<PAGE>
 
  THE METHOD OF DELIVERY OF CERTIFICATES, THE LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING
HOLDER, AND DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE
EXCHANGE AGENT. IF DELIVERY IS BY MAIL, REGISTERED MAIL, RETURN RECEIPT
REQUESTED, PROPERLY INSURED, OR AN OVERNIGHT DELIVERY SERVICE IS RECOMMENDED.
IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.
 
 Book-Entry Transfer
 
  The Exchange Agent will establish an account with respect to the Old Capital
Securities at DTC for purposes of the Exchange Offer within two business days
after the date of this Prospectus. Any financial institution that is a
participant in DTC's book-entry transfer facility system may make a book-entry
delivery of the Old Capital Securities by causing DTC to transfer such Old
Capital Securities into the Exchange Agent's account at DTC in accordance with
DTC's procedures for transfers. However, although delivery of Old Capital
Securities may be effected through book-entry transfer into the Exchange
Agent's account at DTC, the Letter of Transmittal (or facsimile thereof),
properly completed and duly executed, with any required signature guarantees,
or an Agent's Message in lieu of the Letter of Transmittal, and any other
required documents, must in any case be delivered to and received by the
Exchange Agent at its address set forth under "--Exchange Agent" on or prior
to the Expiration Date, or the guaranteed delivery procedures set forth below
must be complied with.
 
  DELIVERY OF DOCUMENTS TO DTC IN ACCORDANCE WITH DTC'S PROCEDURES DOES NOT
CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.
 
 Signature Guarantees
 
  Certificates for the Old Capital Securities need not be endorsed and
signature guarantees on the Letter of Transmittal are unnecessary unless (a) a
certificate for the Old Capital Securities is registered in a name other than
that of the person surrendering the certificate or (b) such holder completes
the box entitled "Special Issuance Instructions" or "Special Delivery
Instructions" in the Letter of Transmittal. In the case of (a) or (b) above,
such certificates for Old Capital Securities must be duly endorsed or
accompanied by a properly executed bond power, with the endorsement or
signature on the bond power and on the Letter of Transmittal guaranteed by a
firm or other entity identified in Rule 17Ad-15 under the Exchange Act as an
"eligible guarantor institution," including (as such terms are defined
therein): (i) a bank; (ii) a broker, dealer, municipal securities broker or
dealer or government securities broker or dealer; (iii) a credit union; (iv) a
national securities exchange, registered securities association or clearing
agency; or (v) a savings association that is a participant in a Securities
Transfer Association (an "Eligible Institution"), unless surrendered on behalf
of such Eligible Institution. See Instruction 1 to the Letter of Transmittal.
 
 Guaranteed Delivery
 
  If a holder desires to tender Old Capital Securities pursuant to the
Exchange Offer and the certificates for such Old Capital Securities are not
immediately available or time will not permit all required documents to reach
the Exchange Agent on or prior to the Expiration Date, or the procedure for
book-entry transfer cannot be completed on a timely basis, such Old Capital
Securities may nevertheless be tendered, provided that all of the following
guaranteed delivery procedures are complied with:
 
    (a) such tenders are made by or through an Eligible Institution;
 
    (b) a properly completed and duly executed Notice of Guaranteed Delivery,
  substantially in the form accompanying the Letter of Transmittal, is
  received by the Exchange Agent, as provided below, on or prior to the
  Expiration Date; and
 
    (c) the certificates (or a book-entry confirmation) representing all
  tendered Old Capital securities, in proper form for transfer, together with
  a properly completed and duly executed Letter of Transmittal (or facsimile
  thereof or Agent's Message in lieu thereof), with any required signature
  guarantees and any other
 
                                      41
<PAGE>
 
  documents required by the Letter of Transmittal, are received by the
  Exchange Agent within three New York Stock Exchange trading days after the
  date of execution of such Notice of Guaranteed Delivery.
 
  The Notice of Guaranteed Delivery may be delivered by hand, or transmitted
by facsimile or mailed to the Exchange Agent and must include a guarantee by
an Eligible Institution in the form set forth in such notice.
 
  Notwithstanding any other provision hereof, the delivery of New Capital
Securities in exchange for Old Capital Securities tendered and accepted for
exchange pursuant to the Exchange Offer will in all cases be made only after
timely receipt by the Exchange Agent of Old Capital Securities, or of a book-
entry confirmation with respect to such Old Capital Securities, and a properly
completed and duly executed Letter of Transmittal (or facsimile thereof or
Agent's Message in lieu thereof), together with any required signature
guarantees and any other documents required by the Letter of Transmittal.
Accordingly, the delivery of New Capital Securities might not be made to all
tendering holders at the same time, and will depend upon when Old Capital
Securities, book-entry confirmations with respect to Old Capital Securities
and other required documents are received by the Exchange Agent.
 
  The Trust's acceptance for exchange of Old Capital Securities tendered
pursuant to any of the procedures described above will constitute a binding
agreement between the tendering holder and the Trust upon the terms and
subject to the conditions of the Exchange Offer.
 
 Determination of Validity
 
  All questions as to the form of documents, validity, eligibility (including
time of receipt) and acceptance for exchange of any tendered Old Capital
Securities will be determined by the Company and the Trust, in their sole
discretion, whose determination shall be final and binding on all parties. The
Company and the Trust reserve the absolute right, in their sole and absolute
discretion, to reject any and all tenders determined by them not to be in
proper form or the acceptance of which, or exchange for, may, in the opinion
of counsel to the Company and the Trust, be unlawful. The Company and the
Trust also reserve the absolute right, subject to applicable law, to waive any
of the conditions of the Exchange Offer as set forth under "--Conditions to
the Exchange Offer" or any condition or irregularity in any tender of Old
Capital Securities of any particular holder whether or not similar conditions
or irregularities are waived in the case of other holders.
 
  The interpretation by the Company and the Trust of the terms and conditions
of the Exchange Offer (including the Letter of Transmittal and the
instructions thereto) will be final and binding. No tender of Old Capital
Securities will be deemed to have been validly made until all irregularities
with respect to such tender have been cured or waived. Neither the Company,
the Trust, any affiliates or assigns of the Company or the Trust, the Exchange
Agent nor any other person shall be under any duty to give any notification of
any irregularities in tenders or incur any liability for failure to give any
such notification.
 
  If any Letter of Transmittal, endorsement, bond power, power of attorney, or
any other document required by the Letter of Transmittal is signed by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary or representative officer of
a corporation or other person acting in a fiduciary or representative
capacity, such person should so indicate when signing, and unless waived by
the Company and the Trust, proper evidence satisfactory to the Company and the
Trust, in their sole discretion, of such person's authority to so act must be
submitted.
 
  A beneficial owner of Old Capital Securities that are held by or registered
in the name of a broker, dealer, commercial bank, trust company or other
nominee or custodian is urged to contact such entity promptly if such
beneficial holder wishes to participate in the Exchange Offer.
 
RESALES OF NEW CAPITAL SECURITIES
 
  The Trust is making the Exchange Offer for the New Capital Securities in
reliance on the position of the staff of the Division of Corporation Finance
of the Commission as set forth in certain interpretive letters
 
                                      42
<PAGE>
 
addressed to third parties in other transactions. However, neither the Company
nor the Trust sought its own interpretive letter and there can be no assurance
that the staff of the Division of Corporation Finance of the Commission would
make a similar determination with respect to the Exchange Offer as it has in
such interpretive letters to third parties. Based on these interpretations by
the staff of the Division of Corporation Finance of the Commission, and
subject to the two immediately following sentences, the Company and the Trust
believe that New Capital Securities issued pursuant to the Exchange Offer in
exchange for Old Capital Securities may be offered for resale, resold and
otherwise transferred by a holder thereof (other than a holder who is a
broker-dealer) without further compliance with the registration and prospectus
delivery requirements of the Securities Act, provided that such New Capital
Securities are acquired in the ordinary course of such holder's business and
that such holder is not participating, and has no arrangement or understanding
with any person to participate, in a distribution (within the meaning of the
Securities Act) of such New Capital Securities. However, any holder of Old
Capital Securities who is an "affiliate" of the Company or the Trust or who
intends to participate in the Exchange Offer for the purpose of distributing
New Capital Securities, or any broker-dealer who purchased Old Capital
Securities from the Trust for resale pursuant to Rule 144A or any other
available exemption under the Securities Act, (a) will not be able to rely on
the interpretations of the staff of the Division of Corporation Finance of the
commission set forth in the above-mentioned interpretive letters, (b) will not
be permitted or entitled to tender such Old Capital Securities in the Exchange
Offer and (c) must comply with the registration and prospectus delivery
requirements of the Securities Act in connection with any sale or other
transfer of such Old Capital Securities unless such sale is made pursuant to
an exemption from such requirements. In addition, as described below, if any
broker-dealer holds Old Capital Securities acquired for its own account as a
result of market-making or other trading activities and exchanges such Old
Capital Securities for New Capital Securities, then such broker-dealer must
deliver a prospectus meeting the requirements of the Securities Act in
connection with any resales of such New Capital Securities.
 
  Each holder of Old Capital Securities who wishes to exchange Old Capital
Securities for New Capital Securities in the Exchange Offer will be required
to represent that (i) it is not an "affiliate" of the Company or the Trust,
(ii) any New Capital Securities to be received by it are being acquired in the
ordinary course of its business, (iii) it has no arrangement or understanding
with any person to participate in a distribution (within the meaning of the
Securities Act) of such New Capital Securities, and (iv) if such holder is not
a broker-dealer, such holder is not engaged in, and does not intend to engage
in, a distribution (within the meaning of the Securities Act) of such New
Capital Securities. In addition, the Company and the Trust may require such
holder, as a condition to such holder's eligibility to participate in the
Exchange Offer, to furnish to the Company and the Trust (or an agent thereof)
in writing information as to the number of "beneficial owners" (within the
meaning of Rule 13d-3 under the Exchange Act) on behalf of whom such holder
holds the Old Capital Securities to be exchanged in the Exchange Offer. Each
broker-dealer that receives New Capital Securities for its own account
pursuant to the Exchange Offer must acknowledge that it acquired the Old
Capital Securities for its own account as the result of market-making
activities or other trading activities and must agree that it will deliver a
prospectus meeting the requirements of the Securities Act in connection with
any resale of such New Capital Securities. The Letter of Transmittal states
that by so acknowledging and by delivering a prospectus, a broker-dealer will
not be deemed to admit that it is an "underwriter" within the meaning of the
Securities Act. Based on the position taken by the staff of the Division of
Corporation Finance of the Commission in the interpretive letters referred to
above, the Company and the Trust believe that Participating Broker-Dealers who
acquired Old Capital Securities for their own accounts as a result of market-
making activities or other trading activities may fulfill their prospectus
delivery requirements with respect to the New Capital Securities received upon
exchange of such Old Capital Securities (other than Old Capital Securities
which represent an unsold allotment from the original sale of the Old Capital
Securities) with a prospectus meeting the requirements of the Securities Act,
which may be the prospectus prepared for an exchange offer so long as it
contains a description of the plan of distribution with respect to the resale
of such New Capital Securities. Accordingly, this Prospectus, as it may be
amended or supplemented from time to time, may be used by a Participating
Broker-Dealer during the period referred to below in connection with resales
of New Capital Securities received in exchange for Old Capital Securities
where such Old Capital Securities were acquired by such Participating Broker-
Dealer for its own account as a result of market-making or other trading
activities. Subject to certain provisions set forth in the Registration Rights
 
                                      43
<PAGE>
 
Agreement, the Company and the Trust have agreed that this Prospectus, as it
may be amended or supplemented from time to time, may be used by a
Participating Broker-Dealer in connection with resales of such New Capital
Securities for a period ending 90 days after the Expiration Date (subject to
extension under certain limited circumstances described below) or, if earlier,
when all such New Capital Securities have been disposed of by such
Participating Broker-Dealer. See "Plan of Distribution." However, a
Participating Broker-Dealer who intends to use this Prospectus in connection
with the resale of New Capital Securities received in exchange for Old Capital
Securities pursuant to the Exchange Offer must notify the Company or the
Trust, or cause the Company or the Trust to be notified, on or prior to the
Expiration Date, that it is a Participating Broker-Dealer. Such notice may be
given in the space provided for that purpose in the Letter of Transmittal or
may be delivered to the Exchange Agent at one of the addresses set forth
herein under "--Exchange Agent." Any Participating Broker-Dealer who is an
"affiliate" of the Company or the Trust may not rely on such interpretive
letters and must comply with the registration and prospectus delivery
requirements of the Securities Act in connection with any resale transaction.
 
  In that regard, each Participating Broker-Dealer who surrenders Old Capital
Securities pursuant to the Exchange Offer will be deemed to have agreed, by
execution of the Letter of Transmittal or delivery of an Agent's Message in
lieu thereof, that, upon receipt of notice from the Company or the Trust of
the occurrence of any event or the discovery of any fact which makes any
statement contained or incorporated by reference in this Prospectus untrue in
any material respect or which causes this Prospectus to omit to state a
material fact necessary in order to make the statements contained or
incorporated by reference herein, in light of the circumstances under which
they were made, not misleading or of the occurrence of certain other events
specified in the Registration Rights Agreement, such Participating Broker-
Dealer will suspend the sale of New Capital Securities (or the New Guarantee
or the New Junior Subordinated Debentures, as applicable) pursuant to this
Prospectus until the Company or the Trust has amended or supplemented this
Prospectus to correct such misstatement or omission and has furnished copies
of the amended or supplemented misstatement or omission and has furnished
copies of the amended or supplemented Prospectus to such Participating Broker-
Dealer or the Company or the Trust has given notice that the sale of the New
Capital Securities (or the New Guarantee or the New Junior Subordinated
Debentures, as applicable) may be resumed, as the case may be. If the Company
or the Trust gives such notice to suspend the sale of the New Capital
Securities (or the New Guarantee or the New Junior Subordinated Debentures, as
applicable), it shall extend the 90-day period referred to above during which
Participating Broker-Dealers are entitled to use this Prospectus in connection
with the resale of New Capital Securities by the number of days during the
period from and including the date of the giving of such notice to and
including the date when Participating Broker-Dealers shall have received
copies of the amended or supplemented Prospectus necessary to permit resales
of the New Capital Securities or to and including the date on which the
Company or the Trust has given notice that the sale of New Capital Securities
(or the New Guarantee or the New Junior Subordinated Debentures, as
applicable) may be resumed, as the case may be.
 
WITHDRAWAL RIGHTS
 
  Except as otherwise provided herein, tenders of Old Capital Securities may
be withdrawn at any time on or prior to the Expiration Date.
 
  In order for a withdrawal to be effective, a written, telegraphic, telex or
facsimile transmission of such notice of withdrawal must be timely received by
the Exchange Agent at one of its addresses set forth under "--Exchange Agent"
on or prior to the Expiration Date. Any such notice of withdrawal must specify
the name of the person who tendered the Old Capital Securities to be
withdrawn, and (if certificates for such Old Capital Securities have been
tendered) the name of the registered holder of the Old Capital Securities as
set forth on the Old Capital Securities, if different from that of the person
who tendered such Old Capital Securities. If Old Capital Securities have been
delivered or otherwise identified to the Exchange Agent, then prior to the
physical release of such Old Capital Securities, the tendering holder must
submit the serial numbers shown on the particular Old Capital Securities to be
withdrawn and the signature on the notice of withdrawal must be guaranteed by
an Eligible Institution, except in the case of Old Capital Securities tendered
for the account of an
 
                                      44
<PAGE>
 
Eligible Institution. If Old Capital Securities have been tendered pursuant to
the procedures for book-entry transfer set forth in "--Procedures for
Tendering Old Capital Securities," the notice of withdrawal must specify the
name and number of the account at DTC to be credited with the withdrawal of
Old Capital Securities, in which case a notice of withdrawal will be effective
if delivered to the Exchange Agent by written, telegraphic, telex or facsimile
transmission. Withdrawals of tenders of Old Capital Securities may not be
rescinded. Old Capital Securities properly withdrawn will not be deemed
validly tendered for purposes of the Exchange Offer, but may be retendered at
any subsequent time on or prior to the Expiration Date by following any of the
procedures described above under "--Procedures for Tendering Old Capital
Securities."
 
  All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by the Company and the
Trust, in their sole discretion, whose determination shall be final and
binding on all parties. Neither the Company, the Trust, any affiliates or
assigns of the Company or the Trust, the Exchange Agent nor any other person
shall be under any duty to give any notification of any irregularities in any
notice of withdrawal or incur any liability for failure to give any such
notification. Any Old Capital Securities which have been tendered but which
are withdrawn will be returned to the holder thereof promptly after
withdrawal.
 
DISTRIBUTIONS ON NEW CAPITAL SECURITIES
 
  Holders of Old Capital Securities whose Old Capital Securities are accepted
for exchange will not receive Distributions on such Old Capital Securities and
will be deemed to have waived the right to receive any Distributions on such
Old Capital Securities accumulated from and including February 3, 1997.
Accordingly, holders of New Capital Securities as of the record date for the
payment of Distributions on August 15, 1997 will be entitled to receive
Distributions accumulated from and including February 3, 1997.
 
CONDITIONS TO THE EXCHANGE OFFER
 
  Notwithstanding any other provisions of the Exchange Offer, or any extension
of the Exchange Offer, the Company and the Trust will not be required to
accept for exchange, or to exchange, any Old Capital Securities for any New
Capital Securities, and, as described below, may terminate the Exchange Offer
(whether or not any Old Capital Securities have theretofore been accepted for
exchange) or may waive any conditions to or amend the Exchange Offer, if any
of the following conditions have occurred or exists or have not been
satisfied:
 
    (a) there shall occur a change in the current interpretation by the staff
  of the Commission which permits the New Capital Securities issued pursuant
  to the Exchange Offer in exchange for Old Capital Securities to be offered
  for resale, resold and otherwise transferred by holders thereof (other than
  broker-dealers and any such holder which is an "affiliate" of the Company
  or the Trust within the meaning of Rule 405 under the Securities Act)
  without compliance with the registration and prospectus delivery provisions
  of the Securities Act provided that such New Capital Securities are
  acquired in the ordinary course of such holders' business and such holders
  have no arrangement or understanding with any person to participate in the
  distribution of such New Capital Securities; or
 
    (b) any law, statute, rule or regulation shall have been adopted or
  enacted which, in the judgment of the Company or the Trust, would
  reasonably be expected to impair its ability to proceed with the Exchange
  Offer; or
 
    (c) a stop order shall have been issued by the Commission or any state
  securities authority suspending the effectiveness of the Registration
  Statement or proceedings shall have been initiated or, to the knowledge of
  the Company or the Trust, threatened for that purpose or any governmental
  approval has not been obtained, which approval the Company or the Trust
  shall, in its sole discretion, deem necessary for the consummation of the
  Exchange Offer as contemplated hereby.
 
  If the Company or the Trust determines in its sole and absolute discretion
that any of the foregoing events or conditions has occurred or exists or has
not been satisfied, it may, subject to applicable law, terminate the Exchange
Offer (whether or not any Old Capital Securities have theretofore been
accepted for exchange) or may
 
                                      45
<PAGE>
 
waive any such condition or otherwise amend the terms of the Exchange Offer in
any respect. If such wavier or amendment constitutes a material change to the
Exchange Offer, the Company or the Trust will promptly disclose such wavier or
amendment by means of a prospectus supplement that will be distributed to the
registered holders of the Old Capital Securities and will extend the Exchange
Offer to the extent required by Rule 14e-1 under the Exchange Act.
 
EXCHANGE AGENT
 
  The Chase Manhattan Bank has been appointed as Exchange Agent for the
Exchange Offer. Delivery of the Letters of Transmittal and any other required
documents, questions, requests for assistance, and requests for additional
copies of this Prospectus or of the Letter of Transmittal should be directed
to the Exchange Agent by registered or certified mail or by hand or overnight
delivery as follows:
 
  By Registered or Certified Mail or Hand or Overnight Delivery:
 
    The Chase Manhattan Bank
    55 Water Street
    Room 234, North Building
    New York, New York 10041
    Attention: Carlos Esteves
 
    Confirm By Telephone:
    Carlos Esteves: (212) 638-0828
 
    Facsimile Transmissions:
    (ELIGIBLE INSTITUTIONS ONLY)
    Carlos Esteves: (212) 638-7375 or (212) 344-9367
 
  Delivery to other than the above addresses or facsimile numbers will not
constitute a valid delivery.
 
FEES AND EXPENSES
 
  The Company has agreed to pay the Exchange Agent reasonable and customary
fees for its services and will reimburse it for its reasonable out-of-pocket
expenses in connection therewith. The Company will also pay brokerage houses
and other custodians, nominees and fiduciaries the reasonable out-of-pocket
expenses incurred by them in forwarding copies of this Prospectus and related
documents to the beneficial owners of Old Capital Securities, and in handling
or tendering for their customers.
 
  Holders who tender their Old Capital Securities for exchange will not be
obligated to pay any transfer taxes in connection therewith. If, however, New
Capital Securities are to be delivered to, or are to be issued in the name of,
any person other than the registered holder of the Old Capital Securities
tendered, or if a transfer tax is imposed for any reason other than the
exchange of Old Capital Securities in connection with the Exchange Offer, then
the amount of any such transfer taxes (whether imposed on the registered
holder or any other persons) will be payable by the tendering holder. If
satisfactory evidence of payment of such taxes or exemption therefrom is not
submitted with the Letter of Transmittal, the amount of such transfer taxes
will be billed directly to such tendering holder.
 
  Neither the Company nor the Trust will make any payment to brokers, dealers
or other nominees soliciting acceptances of the Exchange Offer.
 
                     DESCRIPTION OF NEW CAPITAL SECURITIES
 
  Pursuant to the terms of the Declaration, the Trust has issued the Old
Capital Securities and the Common Securities and will issue the New Capital
Securities in connection with the Exchange Offer. The New Capital
 
                                      46
<PAGE>
 
Securities will represent preferred beneficial interests in the assets of the
Trust and the holders of the New Capital Securities and the Old Capital
Securities will be entitled to a preference over the Common Securities in
certain circumstances with respect to Distributions and amounts payable on
redemption of the Trust Securities or liquidation of the Trust. See "--
Subordination of Common Securities." The Declaration has been qualified under
the Trust Indenture Act of 1939, as amended (the "Trust Indenture Act"). This
summary of certain provisions of the New Capital Securities and the
Declaration does not purport to be complete and is subject to, and is
qualified in its entirety by reference to, all the provisions of the
Declaration, the Delaware Business Trust Act and the Trust Indenture Act.
Certain capitalized terms used herein are defined in the Declaration.
 
GENERAL
 
  The Capital Securities (including the Old Capital Securities and the New
Capital Securities) are limited to $300,000,000 aggregate Liquidation Amount
at any one time outstanding. The New Capital Securities will rank pari passu,
and payments will be made thereon pro rata, with the Old Capital Securities
and the Common Securities except as described under "--Subordination of Common
Securities." Legal title to the New Junior Subordinated Debentures will be
held by the Property Trustee in trust for the benefit of the holders of the
New Capital Securities and the related Common Securities. The New Guarantee
will be a guarantee on a subordinated basis but will not guarantee payment of
Distributions or amounts payable on redemption of the New Capital Securities
or on liquidation of the Trust when the Trust does not have funds on hand
legally available for such payments. See "Description of New Guarantee."
 
DISTRIBUTIONS
 
  Distributions on the New Capital Securities will be cumulative, will
accumulate from February 3, 1997 and will be payable semi-annually in arrears
on August 15 and February 15 of each year, commencing August 15, 1997, at the
annual rate of 8.207% of the Liquidation Amount to the holders of the New
Capital Securities on the relevant record dates. The record dates will be the
first day of the month in which the relevant Distribution Date (as defined
below) falls. The amount of Distributions payable for any period will be
computed on the basis of a 360-day year of twelve 30-day months. In the event
that any date on which Distributions are payable on the New Capital Securities
is not a Business Day (as defined below), payment of the Distribution payable
on such date will be made on the next succeeding day that is a Business Day
(and without any interest or other payment in respect to any such delay), in
each case with the same force and effect as if made on such date (each date on
which Distributions are payable in accordance with the foregoing, a
"Distribution Date"). A "Business Day" shall mean any day other than a
Saturday or a Sunday, or a day on which banking institutions in New York, New
York or Wilmington, Delaware are authorized or required by law or executive
order to remain closed.
 
  So long as no Debenture Event of Default shall have occurred and be
continuing, the Company will have the right under the Indenture to elect to
defer the payment of interest on the New Junior Subordinated Debentures at any
time and from time to time for a period not exceeding 10 consecutive semi-
annual periods with respect to each Extension Period, provided that no
Extension Period may extend beyond the Stated Maturity Date. Upon any such
election, semi-annual Distributions on the New Capital Securities will be
deferred by the Trust during such Extension Period. Distributions to which
holders of the New Capital Securities are entitled during any such Extension
Period will accumulate additional Distributions thereon at the rate per annum
of 8.207% thereof, compounded semi-annually, to the extent permitted by
applicable law from the relevant Distribution Date. The term "Distributions,"
as used herein, shall include any such additional Distributions.
 
  During any such Extension Period, pursuant to the Indenture, the Company may
not (i) declare or pay any dividends or distributions on, or redeem, purchase,
acquire, or make a liquidation payment with respect to, any of the Company's
capital stock (which includes common and preferred stock), (ii) make any
payment of principal, interest or premium, if any, on or repay, repurchase or
redeem any debt securities of the Company (including any Other Debentures (as
defined in the Indenture)) that rank pari passu with or junior in right of
payment to the Junior Subordinated Debentures or (iii) make any guarantee
payments with respect to any guarantee by the Company of any securities of any
subsidiary of the Company (including Other Guarantees (as
 
                                      47
<PAGE>
 
defined in the Indenture)) if such guarantee ranks pari passu with or junior
in right of payment to the Junior Subordinated Debentures (other than (a)
dividends or distributions in shares of or options, warrants or rights to
subscribe for or purchase shares of, common stock of the Company, (b) any
declaration of a dividend in connection with the implementation of a
stockholder's rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the Guarantee, (d) as a direct result of, and only to the
extent required in order to avoid the issuance of fractional shares of capital
stock following, a reclassification of the Company's capital stock or the
exchange or conversion of one class or series of the Company's capital stock
for another class or series of the Company's capital stock or pursuant to an
acquisition in which fractional shares of the Company's capital stock would
otherwise be issued, (e) the purchase of fractional interests in shares of the
Company's capital stock pursuant to the conversion or exchange provisions of
such capital stock or the security being converted or exchanged, and (f)
purchases of common stock related to the issuance of common stock or rights
under any benefit plan for directors, officers, agents or employees of the
Company or its subsidiaries or any of the Company's dividend reinvestment or
director, officer, agent or employee stock purchase plans).
 
  Prior to the termination of any such Extension Period, the Company may
further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed 10 consecutive semi-annual periods or to
extend beyond the Stated Maturity Date. Upon the termination of any such
Extension Period and the payment of all amounts then due on any Interest
Payment Date, the Company may elect to begin a new Extension Period, subject
to the above requirements. No interest shall be due and payable during an
Extension Period, except at the end thereof. The Company must give the
Property Trustee, the Administrative Trustees and the Debenture Trustee notice
of its election of any Extension Period (or an extension thereof) at least
five Business Days prior to the earlier of (i) the date the Distributions on
the Trust Securities would have been payable except for the election to begin
or extend such Extension Period or (ii) the date the Administrative Trustees
are required to give notice to any securities exchange or to holders of
Capital Securities of the record date or the date such Distributions are
payable, but in any event not less than five Business Days prior to such
record date. The Debenture Trustee shall give notice of the Company's election
to begin or extend a new Extension Period to the holders of the Capital
Securities. There is no limitation on the number of times that the Company may
elect to begin an Extension Period.
 
  Although the Company may in the future exercise its option to defer payments
of interest on the New Junior Subordinated Debentures, the Company has no such
current intention.
 
  The revenue of the Trust available for distribution to holders of the
Capital Securities is limited to payments under the Junior Subordinated
Debentures in which the Trust will invest, or has invested, the proceeds from
the issuance and sale of the Trust Securities. See "Description of New Junior
Subordinated Debentures--General." If the Company does not make interest
payments on the Junior Subordinated Debentures, the Property Trustee will not
have funds available to pay Distributions on the Capital Securities. The
payment of Distributions (if and to the extent the Trust has funds on hand
legally available for the payment of such Distributions) will be guaranteed by
the Company on a limited basis as set forth herein under "Description of New
Guarantee."
 
REDEMPTION
 
  Upon the repayment of the New Junior Subordinated Debentures on the Stated
Maturity Date or the prepayment of the New Junior Subordinated Debentures upon
the occurrence and continuation of a Special Event, the proceeds from such
repayment or prepayment shall be applied by the Property Trustee to redeem a
Like Amount (as defined below) of the Trust Securities, upon not less than 30
nor more than 60 days' notice of a date of redemption (the "Redemption Date")
at the applicable Redemption Price, which shall be equal to (i) in the case of
the repayment of the New Junior Subordinated Debentures on the Stated Maturity
Date, the Maturity Redemption Price (equal to the principal of and accrued and
unpaid interest on the New Junior Subordinated Debentures) and (ii) in the
case of the occurrence and continuation of a Special Event, the Special Event
Redemption Price (equal to the Special Event Prepayment Price in respect of
the New Junior Subordinated Debentures). See "Description of New Junior
Subordinated Debentures--Special Event Prepayment."
 
                                      48
<PAGE>
 
  The Company will have the option to prepay the New Junior Subordinated
Debentures, in whole but not in part, upon the occurrence and continuation of
a Special Event, at the Special Event Prepayment Price.
 
LIQUIDATION OF THE TRUST AND DISTRIBUTION OF JUNIOR SUBORDINATED DEBENTURES
 
  The Company will have the right at any time to terminate the Trust and cause
the New Junior Subordinated Debentures to be distributed to the holders of the
Trust Securities in liquidation of the Trust. Such right is subject to the
Company having received an opinion of counsel to the effect that such
distribution will not be a taxable event to holders of New Capital Securities.
 
  The Trust shall automatically terminate upon the first to occur of: (i)
certain events of bankruptcy, dissolution or liquidation of the Company or the
Trust; (ii) the distribution of a Like Amount of the Junior Subordinated
Debentures to the holders of the Trust Securities, if the Company, as Sponsor,
has given written direction to the Property Trustee to terminate the Trust
(which direction is optional and, except as described above, wholly within the
discretion of the Company, as Sponsor); (iii) redemption of all of the Trust
Securities as described under "--Redemption" above; (iv) expiration of the
term of the Trust; (v) upon repayment of the Junior Subordinated Debentures or
at such time as no Junior Subordinated Debentures are outstanding or (vi) the
entry of an order for the dissolution of the Trust by a court of competent
jurisdiction.
 
  If a termination occurs as described in clause (i), (ii), or (vi) of the
preceding paragraph, the Trust shall be liquidated by the Administrative
Trustees as expeditiously as the Administrative Trustees determine to be
possible by distributing, after satisfaction of liabilities to creditors of
the Trust as provided by applicable law, to the holders of the Trust
Securities a Like Amount of New Junior Subordinated Debentures or Old Junior
Subordinated Debentures, as applicable, in which event such holders will be
entitled to receive out of the assets of the Trust legally available for
distribution to holders, after satisfaction of liabilities to creditors of the
Trust as provided by applicable law, an amount equal to the aggregate of the
Liquidation Amount plus accumulated and unpaid Distributions thereon to the
date of payment (such amount being the "Liquidation Distribution"). If the
Liquidation Distribution can be paid only in part because the Trust has
insufficient assets on hand legally available to pay in full the aggregate
Liquidation Distribution, then the amounts payable directly by the Trust on
the Capital Securities and the Common Securities shall be paid on a pro rata
basis, except that if a Debenture Event of Default has occurred and is
continuing, the Capital Securities shall have a priority over the Common
Securities. See "--Subordination of Common Securities" below.
 
  "Like Amount" means (i) with respect to a redemption of the Trust
Securities, Trust Securities having a Liquidation Amount equal to the
principal amount of Junior Subordinated Debentures to be paid in accordance
with their terms and (ii) with respect to a distribution of Junior
Subordinated Debentures upon the liquidation of the Trust, Junior Subordinated
Debentures having a principal amount equal to the Liquidation Amount of the
Trust Securities of the holder to whom such Junior Subordinated Debentures are
distributed.
 
  After the liquidation date is fixed for any distribution of Junior
Subordinated Debentures to holders of the Trust Securities, (i) the Trust
Securities will no longer be deemed to be outstanding, (ii) each registered
global certificate, if any, representing Trust Securities and held by The
Depository Trust Company ("DTC") or its nominee will receive a registered
global certificate or certificates representing the Junior Subordinated
Debentures to be delivered upon such distribution and (iii) any certificates
representing Trust Securities not held by DTC or its nominee will be deemed to
represent Junior Subordinated Debentures having a principal amount equal to
the Liquidation Amount of such Trust Securities, and bearing accrued and
unpaid interest in an amount equal to the accumulated and unpaid Distributions
on such Trust Securities until such certificates are presented to the
Administrative Trustees or their agent for cancellation, whereupon the Company
will issue to such holder, and the Debenture Trustee will authenticate, a
certificate representing such Junior Subordinated Debentures.
 
  There can be no assurance as to the market prices for the New Capital
Securities or the New Junior Subordinated Debentures that may be distributed
in exchange for the Trust Securities if a dissolution and liquidation of the
Trust were to occur. Accordingly, the New Capital Securities that an investor
may purchase, or
 
                                      49
<PAGE>
 
the New Junior Subordinated Debentures that the investor may receive on
dissolution and liquidation of the Trust, may trade at a discount to the price
that the investor paid to purchase the New Capital Securities.
 
REDEMPTION PROCEDURES
 
  If applicable, Trust Securities shall be redeemed at the applicable
Redemption Price with the proceeds from the contemporaneous repayment of the
New Junior Subordinated Debentures. Any redemption of Trust Securities shall
be made and the applicable Redemption Price shall be payable on the Redemption
Date only to the extent that the Trust has funds legally available for the
payment of such applicable Redemption Price. See also "--Subordination of
Common Securities" below.
 
  If the Trust gives a notice of redemption in respect of the Capital
Securities, then, by 12:00 noon, New York City time, on the Redemption Date,
to the extent funds are legally available, with respect to the Capital
Securities held by DTC or its nominees, the Property Trustee will pay or cause
the Paying Agent to pay the Redemption Price to DTC. See "--Form,
Denomination, Book-Entry Procedures and Transfer" below. With respect to the
Capital Securities held in certificated form, the Property Trustee, to the
extent funds are legally available, will give irrevocable instructions and
authority to the Paying Agent and will irrevocably deposit with the Paying
Agent for the Capital Securities funds sufficient to pay or cause the Paying
Agent to pay the applicable Redemption Price to the holders thereof upon
surrender of their certificates evidencing the Capital Securities. See
"Payment and Paying Agency" below. Distributions payable on or prior to the
Redemption Date shall be payable to the holders of such Capital Securities on
the relevant record dates for the related Distribution Dates occurring on or
prior to such Redemption Date. If notice of redemption shall have been given
and funds deposited with the Property Trustee to pay the Redemption Price for
the Capital Securities called for redemption, then all rights of the holders
of such Capital Securities will cease, except the right of the holders of such
Capital Securities to receive the applicable Redemption Price, but without
interest on such Redemption Price, and such Capital Securities will cease to
be outstanding. In the event that any Redemption Date is not a Business Day,
then the applicable Redemption Price payable on such date will be paid on the
next succeeding day that is a Business Day (and without any interest or other
payment in respect of any such delay) except that, if such Business Day falls
in the next calendar year, such payment will be made on the immediately
preceding Business Day, in each case with the same force and effect as if made
on such date fixed for redemption. In the event that payment of the applicable
Redemption Price is improperly withheld or refused and not paid either by the
Trust or by the Company pursuant to the Guarantee as described under
"Description of New Guarantee," (i) Distributions on Capital Securities called
for redemption will accumulate on the Redemption Price at the then applicable
rate, from the Redemption Date originally established by the Trust to the date
such applicable Redemption Price is actually paid, and (ii) the actual payment
date will be the Redemption Date for purposes of calculating the applicable
Redemption Price.
 
  Subject to applicable law (including, without limitation, United States
federal securities law) the Company or its subsidiaries may at any time and
from time to time purchase outstanding Capital Securities by tender, in the
open market or by private agreement.
 
  Notice of any redemption will be mailed at least 30 days but not more than
60 days prior to the Redemption Date to each holder of Trust Securities at its
registered address. Unless the Company defaults in payment of the Special
Event Prepayment Price on, or in the repayment of, the Junior Subordinated
Debentures, on and after the Redemption Date Distributions will cease to
accrue on the Trust Securities called for redemption.
 
SUBORDINATION OF COMMON SECURITIES
 
  Payment of Distributions on, and the Redemption Price of, the Capital
Securities and the Common Securities, as applicable, shall be made pro rata
based on the Liquidation Amount of the Capital Securities and Common
Securities; provided, however, that if any Debenture Event of Default shall
have occurred and be continuing, no payments in respect of any Distribution
on, or payments upon liquidation, redemption, repurchase or otherwise with
respect to, the Common Securities, shall be made until the holders of the
Capital Securities
 
                                      50
<PAGE>
 
shall be paid in full in cash all accumulated and unpaid Distributions on all
of the outstanding Capital Securities for all Distribution periods terminating
on or prior thereto or, in the case of Capital Securities called for
redemption on a Redemption Date on or prior thereto, the full amount of the
Redemption Price therefor, or in the case of a liquidation, the Liquidation
Distribution shall have been made or provided for, and all funds available to
the Property Trustee shall first be applied to the payment in full of all
Distributions on, Redemption Price of, or Liquidation Distribution for the
Capital Securities then due and payable.
 
  In the case of any Event of Default, the Company as holder of the Common
Securities will be deemed to have waived any right to act with respect to such
Event of Default until the effect of such Event of Default shall have been
cured, waived or otherwise eliminated. Until any such Event of Default has
been so cured, waived or otherwise eliminated, the Property Trustee shall act
solely on behalf of the holders of the Capital Securities and not on behalf of
the Company as holder of the Common Securities, and only the holders of the
Capital Securities will have the right to direct the Property Trustee to act
on their behalf.
 
EVENTS OF DEFAULT; NOTICE
 
  The occurrence of a Debenture Event of Default (see "Description of New
Junior Subordinated Debentures--Debenture Events of Default") constitutes an
"Event of Default" under the Declaration.
 
  Within five Business Days after the occurrence of any Event of Default
actually known to the Property Trustee, the Property Trustee shall transmit
notice of such Event of Default to the holders of the Capital Securities, the
Administrative Trustees and the Company, as Sponsor, unless such Event of
Default shall have been cured or waived. The Company, as Sponsor, and the
Administrative Trustees are required to file annually with the Property
Trustee a certificate as to whether or not they are in compliance with all the
conditions and covenants applicable to them under the Declaration.
 
  If a Debenture Event of Default has occurred and is continuing, the Capital
Securities shall have a preference over the Common Securities as described
under "--Liquidation of the Trust and Distribution of New Junior Subordinated
Debentures" and "--Subordination of Common Securities" above.
 
REMOVAL OF ISSUER TRUSTEES
 
  Unless a Debenture Event of Default shall have occurred and be continuing,
any Issuer Trustee may be removed at any time by the holder of the Common
Securities. If an Event of Default under the Declaration has occurred and is
continuing, the Property Trustee and the Delaware Trustee may be removed at
such time by the holders of a majority in Liquidation Amount of the
outstanding Capital Securities. In no event will the holders of the Capital
Securities have the right to vote to appoint, remove or replace the
Administrative Trustees, which voting rights are vested exclusively in the
Company as the holder of the Common Securities. No resignation or removal of
an Issuer Trustee and no appointment of a successor trustee shall be effective
until the acceptance of appointment by the successor Issuer Trustee in
accordance with the provisions of the Declaration.
 
MERGER OR CONSOLIDATION OF ISSUER TRUSTEES
 
  Any corporation into which the Property Trustee, the Delaware Trustee or any
Administrative Trustee that is not a natural person may be merged or converted
or with which it may be consolidated, or any corporation or Person resulting
from any merger, conversion or consolidation to which such Issuer Trustee
shall be a party, or any corporation succeeding to all or substantially all
the corporate trust business of such Issuer Trustee, shall be the successor of
such Issuer Trustee under the Declaration, provided such corporation or Person
shall be otherwise qualified and eligible.
 
MERGERS, CONVERSIONS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS OF THE
TRUST
 
  The Trust may not merge or convert with or into, consolidate, amalgamate, or
be replaced by, or convey, transfer or lease its properties and assets as an
entirety or substantially as an entirety to any corporation or other
 
                                      51
<PAGE>
 
Person, except as described below. The Trust may, at the request of the
Company, as Sponsor, with the consent of the Administrative Trustees but
without the consent of the holders of the Capital Securities, the Property
Trustee or the Delaware Trustee, merge or convert with or into, consolidate,
amalgamate, or be replaced by or convey, transfer or lease its properties and
assets as an entirety or substantially as an entirety to a trust organized as
such under the laws of any State; provided, that (i) such successor entity
either (a) expressly assumes all of the obligations of the Trust with respect
to the Trust Securities or (b) substitutes for the Trust Securities other
securities having substantially the same terms as the Trust Securities (the
"Successor Securities") so long as the Successor Securities rank the same as
the Trust Securities rank in priority with respect to distributions and
payments upon liquidation, redemption and otherwise, (ii) the Company
expressly appoints a trustee of such successor entity possessing the same
powers and duties as the Property Trustee with respect to the Junior
Subordinated Debentures, (iii) the Successor Securities are listed issued in
place of the Capital Securities, or any such Successor Securities will be
listed upon notification of issuance, on any national securities exchange or
other organization on which the Capital Securities are then listed or quoted,
if any, (iv) such merger, conversion, consolidation, amalgamation,
replacement, conveyance, transfer or lease does not cause the Capital
Securities (including any Successor Securities) to be downgraded by any
nationally recognized statistical rating organization, (v) such merger,
conversion, consolidation, amalgamation, replacement, conveyance, transfer or
lease does not adversely affect the rights, preferences and privileges of the
holders of the Capital Securities (including any Successor Securities) in any
material respect (other than any dilution of such holders' interests in the
new entity), (vi) such successor entity has a purpose identical to that of the
Trust, (vii) prior to such merger, conversion, consolidation, amalgamation,
replacement, conveyance, transfer or lease, the Company has received an
opinion from independent counsel to the Trust experienced in such matters to
the effect that (a) such merger, conversion, consolidation, amalgamation,
replacement, conveyance, transfer or lease does not adversely affect the
rights, preferences and privileges of the holders of the Capital Securities
(including any Successor Securities) in any material respect (other than any
dilution of such holders' interests in the new entity), and (b) following such
merger, conversion, consolidation, amalgamation, replacement, conveyance,
transfer or lease, neither the Trust nor such successor entity will be
required to register as an investment company under the Investment Company Act
of 1940, as amended (the "Investment Company Act"), and (viii) the Company or
any permitted successor or assignee owns all of the common securities of such
successor entity and guarantees the obligations of such successor entity under
the Successor Securities at least to the extent provided by the Guarantee.
Notwithstanding the foregoing, the Trust shall not, except with the consent of
holders of 100% in Liquidation Amount of the Trust Securities, consolidate,
amalgamate, merge or convert with or into, or be replaced by or convey,
transfer or lease its properties and assets as an entirety or substantially as
an entirety to any other entity or permit any other entity to consolidate,
amalgamate, merge or convert with or into, or replace it if such
consolidation, amalgamation, merger, conversion, replacement, conveyance,
transfer or lease would cause the Trust or the successor entity not to be
classified as a grantor trust for the United States federal income tax
purposes.
 
VOTING RIGHTS; AMENDMENT OF THE DECLARATION
 
  Except as provided below and under "--Mergers, Conversions, Consolidations,
Amalgamations or Replacements of the Trust" above and "Description of New
Guarantee--Amendments and Assignment" and as otherwise required by law and the
Declaration, the holders of the New Capital Securities will have no voting
rights.
 
  The Declaration may be amended from time to time by the Company, the
Property Trustee and the Administrative Trustees, without the consent of the
holders of the Trust Securities (i) to cure any ambiguity, correct or
supplement any provisions in the Declaration that may be inconsistent with any
other provision, or to make any other provisions with respect to matters or
questions arising under the Declaration, which shall not be inconsistent with
the other provisions of the Declaration, or (ii) to modify, eliminate or add
to any provisions of the Declaration to such extent as shall be necessary to
ensure that the Trust will be classified for United States federal income tax
purposes as a grantor trust at all times that any Trust Securities are
outstanding or to ensure that the Trust will not be required to register as an
"investment company" under the Investment Company Act;
 
                                      52
<PAGE>
 
provided, however, that in the case of clause (i), such action shall not
adversely affect in any material respect the interests of the holders of the
Trust Securities. Any amendment of the Declaration pursuant to the foregoing
shall become effective when notice thereof is given to the holders of the
Trust Securities. The Declaration may be amended by the Issuer Trustees and
the Company (i) with the consent of holders representing a majority (based
upon Liquidation Amount) of the outstanding Trust Securities and (ii) upon
receipt by the Issuer Trustee of an opinion of counsel to the effect that such
amendment or the exercise of any power granted to the Issuer Trustees in
accordance with such amendment will not affect the Trust's status as a grantor
trust for United States federal income tax purposes or the Trust's exemption
from status as an "investment company" under the Investment Company Act,
provided that, without the consent of each holder of Trust Securities, the
Declaration may not be amended to (i) change the amount or timing of any
Distribution or other payment on the Trust Securities or otherwise adversely
affect the amount of any Distribution required to be made in respect of the
Trust Securities as of a specified date or (ii) restrict the right of a holder
of Trust Securities to institute suit for the enforcement of any such payment
on or after such date.
 
  So long as any Junior Subordinated Debentures are held by the Property
Trustee, the Issuer Trustees shall not (i) direct the time, method and place
of conducting any proceeding for any remedy available to the Debenture
Trustee, or executing any trust or power conferred on the Debenture Trustee
with respect to the Junior Subordinated Debentures, (ii) waive certain past
defaults under the Indenture, (iii) exercise any right to rescind or annul a
declaration of acceleration of the maturity of the principal of the Junior
Subordinated Debentures or (iv) consent to any amendment, modification or
termination of the Indenture or the Junior Subordinated Debentures, where such
consent shall be required to be made by the holders of a majority in aggregate
principal amount of the Junior Subordinated Debentures then outstanding,
without, in each case, obtaining the prior approval of the holders of a
majority in Liquidation Amount of all outstanding Capital Securities;
provided, however, that where a consent under the Indenture would require the
consent of each holder of Junior Subordinated Debentures affected thereby, no
such consent shall be given by the Property Trustee without the prior approval
of each holder of Capital Securities. The Issuer Trustees shall not revoke any
action previously authorized or approved by a vote of the holders of the
Capital Securities except by subsequent vote of such holders. In addition to
obtaining the foregoing approvals of such holders of the Capital Securities,
prior to taking any of the foregoing actions, the Issuer Trustees shall obtain
an opinion of counsel experienced in such matters to the effect that the Trust
will not be classified as an association taxable as a corporation for United
States federal income tax purposes on account of such action. The Property
Trustee shall in general notify each holder of Capital Securities of any
notice of default actually known to the Property Trustee with respect to the
Junior Subordinated Debentures.
 
  Any required approval of holders of Capital Securities may be given at a
meeting of such holders convened for such purpose or pursuant to written
consent. An Administrative Trustee will cause a notice of any meeting at which
holders of Capital Securities are entitled to vote, or of any matter upon
which action by written consent of such holders is to be taken, to be given to
each holder of record of Capital Securities in the manner set forth in the
Declaration.
 
  No vote or consent of the holders of Capital Securities will be required for
the Trust to redeem and cancel the Capital Securities in accordance with the
Declaration.
 
  Notwithstanding that holders of the Capital Securities are entitled to vote
or consent under any of the circumstances described above, any of the Capital
Securities that are owned by the Company or any affiliate of the Company
shall, for purposes of such vote or consent, be treated as if they were not
outstanding.
 
FORM, DENOMINATION, BOOK-ENTRY PROCEDURES AND TRANSFER
 
  The New Capital Securities may be represented by one or more New Capital
Securities in registered, global form (collectively, the "Global Capital
Securities"). The Global Capital Securities will be deposited upon issuance
with the Property Trustee as custodian for DTC, in New York, New York, and
registered in the name
 
                                      53
<PAGE>
 
of DTC or its nominee, in each case for credit to an account of a direct or
indirect participant in DTC as described below.
 
  Except as set forth below, the Global Capital Securities may be transferred,
in whole and not in part, only to another nominee of DTC or to a successor of
DTC or its nominee. Beneficial interests in the Global Capital Securities may
not be exchanged for Capital Securities in certificated form except in the
limited circumstances described below.
 
  DTC has advised the Trust and the Company that DTC is a limited-purpose
trust company created to hold securities for its participating organizations
(collectively, the "Participants") and to facilitate the clearance and
settlement of transactions in those securities between Participants through
electronic book-entry changes in accounts of the Participants. The
Participants include securities brokers and dealers (including the Initial
Purchasers), banks, trust companies, clearing corporations and certain other
organizations. Access to DTC's system is also available to other entities such
as banks, brokers, dealers and trust companies that clear through or maintain
a custodial relationship with a Participant, either directly or indirectly
(collectively, the "Indirect Participants"). Persons who are not Participants
may beneficially own securities held by or on behalf of DTC only through the
Participants or the Indirect Participants. The ownership interest and transfer
of ownership interest of each actual purchase of each security held by or on
behalf of DTC are recorded on the records of the Participants and Indirect
Participants.
 
  DTC has also advised the Trust and the Company that, pursuant to procedures
established by it, (i) upon deposit of the Global Capital Securities, DTC will
credit the accounts of Participants designated by the Initial Purchasers with
portions of the Liquidation Amount of the Global Capital Securities and (ii)
ownership of such interests in the Global Capital Securities will be shown on,
and the transfer of ownership thereof will be effected only through, records
maintained by DTC (with respect to the Participants) or by the Participants
and the Indirect Participants (with respect to other owners of beneficial
interests in the Global Capital Securities).
 
  Except as described below, owners of interests in the Global Capital
Securities will not have Capital Securities registered in their name, will not
receive physical delivery of Capital Securities in certificated form and will
not be considered the registered owners or holders thereof under the
Declaration for any purpose.
 
  Payments in respect of the Global Capital Security registered in the name of
DTC or its nominee will be payable by the Property Trustee to DTC in its
capacity as the registered holder under the Declaration. Under the terms of
the Declaration, the Property Trustee will treat the persons in whose names
the Capital Securities, including the Global Capital Securities, are
registered as the owners thereof for the purpose of receiving such payments
and for any and all purposes whatsoever. Consequently, neither the Property
Trustee nor any agent thereof has or will have any responsibility or liability
for (i) any aspect of DTC's records or any Participant's or Indirect
Participant's records relating to or payments made on account of beneficial
ownership interests in the Global Capital Securities, or for maintaining,
supervising or reviewing any of DTC's records or any Participant's or Indirect
Participant's records relating to the beneficial ownership interests in the
Global Capital Securities or (ii) any other matter relating to the actions and
practices of DTC or any of its Participants or Indirect Participants. DTC has
advised the Trust and the Company that its current practice, upon receipt of
any payment in respect of securities such as the Capital Securities, is to
credit the accounts of the relevant Participants with the payment on the
payment date, in amounts proportionate to their respective holdings in
Liquidation Amount of beneficial interests in the relevant security as shown
on the records of DTC unless DTC has reason to believe it will not receive
payment on such payment date. Payments by the Participants and the Indirect
Participants to the beneficial owners of Capital Securities will be governed
by standing instructions and customary practices and will be the
responsibility of the Participants or the Indirect Participants and will not
be the responsibility of DTC, the Property Trustee, the Trust or the Company.
Neither the Trust nor the Company or the Property Trustee will be liable for
any delay by DTC or any of its Participants in identifying the beneficial
owners of the Capital Securities, and the Trust or the Company and the
Property Trustee may conclusively rely on and will be protected in relying on
instructions from DTC or its nominee for all purposes.
 
                                      54
<PAGE>
 
  DTC has advised the Trust and the Company that it will take any action
permitted to be taken by a holder of Capital Securities only at the direction
of one or more Participants to whose account with DTC interests in the Global
Capital Securities are credited and only in respect of such portion of the
Liquidation Amount of the Capital Securities as to which such Participant or
Participants has or have given such direction. However, if there is an Event
of Default under the Declaration, DTC reserves the right to exchange the
Global Capital Securities for Capital Securities in certificated form and to
distribute such Capital Securities to its Participants.
 
  The information in this section concerning DTC and its book-entry system has
been obtained from sources that the Trust and the Company believe to be
reliable, but neither the Trust nor the Company takes responsibility for the
accuracy thereof.
 
  A Global Capital Security is exchangeable for New Capital Securities in
registered certificated form if (i) DTC notifies the Trust that it is
unwilling or unable to continue as clearing agency for the Global Capital
Security or has ceased to be a clearing agency registered under the Exchange
Act and the Company thereupon fails to appoint a successor clearing agency
within 90 days, (ii) the Trust in its sole discretion elects to cause the
issuance of definitive certificated Capital Securities or (iii) there shall
have occurred and be continuing an Event of Default or any event which after
notice or lapse of time or both would be an Event of Default under the
Declaration. In addition, beneficial interests in a Global Capital Security
may be exchanged for certificated New Capital Securities upon request but only
upon at least 20 days' prior written notice given to the Property Trustee by
or on behalf of DTC in accordance with customary procedures. In all cases,
certificated New Capital Securities delivered in exchange for any Global
Capital Security or beneficial interests therein will be registered in the
names, and issued in any approved denominations, requested by or on behalf of
the Depository (in accordance with its customary procedures), unless the
Property Trustee determines otherwise in compliance with applicable law.
 
PAYMENT AND PAYING AGENT
 
  Payments in respect of the New Capital Securities held in global form shall
be made to the Depositary, which shall credit the relevant accounts at the
Depositary on the applicable Distribution Dates or in respect of the Capital
Securities that are not held by the Depositary, such payments shall be made by
check mailed to the address of the holder entitled thereto as such address
shall appear on the register. The paying agent (the "Paying Agent") shall
initially be the Property Trustee. The Trust may appoint one or more
additional paying agents chosen by the Property Trustee and acceptable to the
Administrative Trustees and the Company. The Paying Agent shall be permitted
to resign as Paying Agent upon 30 days' written notice to the Administrative
Trustees. In the event that the Property Trustee shall no longer be the Paying
Agent, the Trust shall appoint a successor (which shall be acceptable to the
Administrative Trustees and the Company) to act as Paying Agent.
 
REGISTRAR AND TRANSFER AGENT
 
  The Property Trustee will act as registrar and transfer agent for the New
Capital Securities. Registration of transfers of Capital Securities will be
effected without charge by or on behalf of the Trust, but upon payment (with
the giving of such indemnity as the Administrative Trustees may require) in
respect of any tax or other government charges which may be imposed in
relation to it. The Trust will not be required to register or cause to be
registered the transfer of Capital Securities after such Capital Securities
have been called for redemption.
 
INFORMATION CONCERNING THE PROPERTY TRUSTEE
 
  The Property Trustee, prior to the occurrence of a default with respect to
the Trust Securities and after the curing of any defaults that may have
occurred, undertakes to perform only such duties as are specifically set forth
in the Declaration and, after an Event of Default, shall exercise such rights
and powers vested in it by the Declaration and use the same degree of care and
skill as a prudent person would exercise under the circumstances in the
conduct of his or her own affairs. Subject to such provisions, the Property
Trustee is under no obligation to exercise any of the powers vested in it by
the Declaration at the request of any holder of Capital Securities,
 
                                      55
<PAGE>
 
unless offered reasonable indemnity by such holder against the costs, expenses
and liabilities which might be incurred thereby. The holders of Capital
Securities will not be required to offer such indemnity in the event such
holders, by exercising their voting rights, direct the Property Trustee to
take any action it is empowered to take under the Declaration following a
Declaration Event of Default. The Property Trustee also serves as trustee
under the Guarantee and the Indenture. The Company and certain of its
subsidiaries may, from time to time, conduct certain banking transactions with
the Property Trustee in the ordinary course of their business.
 
GOVERNING LAW
 
  The Declaration and the Capital Securities will be governed by, and
construed in accordance with, the internal laws of the State of Delaware.
 
MISCELLANEOUS
 
  The Administrative Trustees are authorized and directed to operate the Trust
in such a way so that the Trust will not be required to register as an
"investment company" under the 1940 Act or characterized as other than a
grantor trust for United States federal income tax purposes. The Company is
authorized and directed to conduct its affairs so that the Junior Subordinated
Debentures will be treated as indebtedness of the Company for United States
federal income tax purposes. In this connection, the Company and the
Administrative Trustees are authorized to take any action, not inconsistent
with applicable law, the certificate of trust of the Trust or the certificate
of incorporation of the Company, that each of the Company and the
Administrative Trustees determine in their discretion to be necessary or
desirable to achieve such end, as long as such action does not adversely
affect the interests of the holders of the Capital Securities or vary the
terms thereof.
 
  Holders of the Trust Securities have no preemptive or similar rights.
 
  The Trust may not borrow money, issue debt, execute mortgages or pledge any
of its assets.
 
               DESCRIPTION OF NEW JUNIOR SUBORDINATED DEBENTURES
 
  The Old Junior Subordinated Debentures were issued, and the New Junior
Subordinated Debentures will be issued, as separate series under the
Indenture. The Indenture has been qualified under the Trust Indenture Act.
This summary of certain terms and provisions of the Junior Subordinated
Debentures and the Indenture does not purport to be complete, and where
reference is made to particular provisions of the Indenture, such provisions,
including the definitions of certain terms, some of which are not otherwise
defined herein, are qualified in their entirety by reference to all of the
provisions of the Indenture and those terms made a part of the Indenture by
the Trust Indenture Act.
 
GENERAL
 
  Concurrently with the issuance of the Old Capital Securities, the Trust
invested the proceeds thereof, together with the consideration paid by the
Company for the Common Securities, in Old Junior Subordinated Debentures
issued by the Company. Pursuant to the Exchange Offer, the Company will
exchange the Old Junior Subordinated Debentures, in an amount corresponding to
the Old Capital Securities accepted for exchange, for a like aggregate
principal amount of the New Junior Subordinated Debentures promptly after the
Expiration Date.
 
  The New Junior Subordinated Debentures will bear interest at the annual rate
of 8.207% of the principal amount thereof, payable semi-annually in arrears on
February 15 and August 15 of each year (each, an "Interest Payment Date"),
commencing August 15, 1997, to the person in whose name each New Junior
Subordinated Debenture is registered, subject to certain exceptions, at the
close of business on the first day of the month in which the relevant payment
date falls. It is anticipated that, until the liquidation, if any, of the
Trust, each New Junior Subordinated Debenture will be held in the name of the
Property Trustee in trust for the benefit of the
 
                                      56
<PAGE>
 
holders of the Trust Securities. The amount of interest payable for any period
will be computed on the basis of a 360-day year of twelve 30-day months and,
for any period of less than a full calendar month, the number of days elapsed
in such month. In the event that any date on which interest is payable on the
New Junior Subordinated Debentures is not a Business Day, then payment of the
interest payable on such date will be made on the next succeeding day that is
a Business Day (and without any interest or other payment in respect of any
such delay), with the same force and effect as if made on the date such
payment was originally payable. Accrued interest that is not paid on the
applicable Interest Payment Date will bear additional interest in the amount
thereof (to the extent permitted by law) at the rate per annum of 8.207%
thereof, compounded semi-annually. The term "interest," as used herein, shall
include semi-annual interest payments, interest on semi-annual interest
payments not paid on the applicable Interest Payment Date and Additional Sums
(as defined herein), as applicable.
 
  The New Junior Subordinated Debentures will mature on February 3, 2027 (the
"Stated Maturity Date"). The New Junior Subordinated Debentures will rank pari
passu with all Other Debentures and will be unsecured and subordinate and rank
junior in right of payment to the extent and in the manner set forth in the
Indenture to all Senior Indebtedness of the Company. See "--Subordination"
below. The Company is a non-operating holding company and all of the operating
assets of the Company and its consolidated subsidiaries are owned by such
subsidiaries. The Company relies primarily on dividends from such subsidiaries
to meet its obligations. The ability of the Company's insurance subsidiaries
to provide dividends to the Company and the Company's other holding Company
subsidiaries is restricted by state insurance law and may require prior
approval of state insurance regulators. Because the Company is a holding
company, the right of the Company to participate in any distribution of assets
of any subsidiary upon such subsidiary's liquidation or reorganization or
otherwise is subject to the prior claims of creditors of the subsidiary,
except to the extent the Company may itself be recognized as a creditor of
that subsidiary. Accordingly, the New Junior Subordinated Debentures will be
effectively subordinated to all existing and future liabilities of the
Company's subsidiaries, and holders of New Junior Subordinated Debentures
should look only to the assets of the Company for payments on the New Junior
Subordinated Debentures. The Indenture does not limit the incurrence or
issuance of other secured or unsecured debt of the Company, including Senior
Indebtedness. See "--Subordination" below and "Risk Factors--Holding Company
Structure; Structural Subordination and Leverage" above.
 
FORM, REGISTRATION AND TRANSFER
 
  If the New Junior Subordinated Debentures are distributed to the holders of
the Trust Securities, the New Junior Subordinated Debentures may be
represented by one or more global certificates registered in the name of Cede
& Co. as the nominee of DTC. The depositary arrangements for such New Junior
Subordinated Debentures are expected to be substantially similar to those in
effect for the New Capital Securities. For a description of DTC and the terms
of the depositary arrangements relating to payments, transfers, voting rights,
redemptions and other notices and other matters, see "Description of New
Capital Securities--Form, Denomination, Book-Entry Procedures and Transfer."
 
PAYMENT AND PAYING AGENTS
 
  Payment of principal of and premium, if any, and any interest on New Junior
Subordinated Debentures will be made at the office of the Debenture Trustee in
The City of New York or at the office of such Paying Agent or Paying Agents as
the Company may designate from time to time, except that at the option of the
Company payment of any interest may be made (i) by check mailed to the address
of the Person entitled thereto as such address shall appear in the register
for New Junior Subordinated Debentures or (ii) by transfer to an account
maintained by the Person entitled thereto as specified in such register,
provided that proper transfer instructions have been received by the relevant
record date. Payment of any interest on any New Junior Subordinated Debenture
will be made to the Person in whose name such New Junior Subordinated
Debenture is registered at the close of business on the record date for such
interest, except in the case of defaulted interest. The Company may at any
time designate additional Paying Agents or rescind the designation of any
Paying Agent; however, the Company will at all times be required to maintain a
Paying Agent in each place of payment for the New Junior Subordinated
Debentures.
 
                                      57
<PAGE>
 
  Any moneys deposited with the Debenture Trustee or any Paying Agent, or then
held by the Company in trust, for the payment of the principal of and premium,
if any, or interest on any New Junior Subordinated Debenture and remaining
unclaimed for two years after such principal and premium, if any, or interest
has become due and payable shall, at the request of the Company, be repaid to
the Company and the holder of such New Junior Subordinated Debenture shall
thereafter look, as a general unsecured creditor, only to the Company for
payment thereof.
 
OPTION TO EXTEND INTEREST PAYMENT DATE
 
  So long as no Debenture Event of Default has occurred and is continuing, the
Company will have the right under the Indenture at any time during the term of
the Junior Subordinated Debentures to defer the payment of interest at any
time or from time to time for a period not exceeding 10 consecutive semi-
annual periods with respect to each Extension Period, provided that no
Extension Period may extend beyond the Stated Maturity Date. At the end of an
Extension Period, the Company must pay all interest then accrued and unpaid
(together with interest thereon accrued at the annual rate of 8.207%,
compounded semi-annually, to the extent permitted by applicable law). During
an Extension Period, interest will continue to accrue and, if the Junior
Subordinated Debentures have been distributed to holders of the Trust
Securities, holders of Junior Subordinated Debentures (or holders of the Trust
Securities while Trust Securities are outstanding) will be required to accrue
interest income for United States federal income tax purposes prior to the
receipt of cash attributable to such income. See "Certain Federal Income Tax
Considerations--Interest Income and Original Issue Discount."
 
  During any such Extension Period, pursuant to the Indenture, the Company may
not (i) declare or pay any dividends or distributions on, or redeem, purchase,
acquire, or make a liquidation payment with respect to, any of the Company's
capital stock (which includes common and preferred stock), (ii) make any
payment of principal, interest or premium, if any, on or repay, repurchase or
redeem any debt securities of the Company (including any Other Debentures)
that rank pari passu with or junior in right of payment to the Junior
Subordinated Debentures or (iii) make any guarantee payments with respect to
any guarantee by the Company of any securities of any subsidiary of the
Company (including Other Guarantees) if such guarantee ranks pari passu with
or junior in right of payment to the Junior Subordinated Debentures (other
than (a) dividends or distributions in shares of or options, warrants or
rights to subscribe for or purchase shares of, common stock of the Company,
(b) any declaration of a dividend in connection with the implementation of a
stockholder's rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the Guarantee, (d) as a direct result of, and only to the
extent required in order to avoid the issuance of fractional shares of capital
stock following, a reclassification of the Company's capital stock or the
exchange or conversion of one class or series of the Company's capital stock
for another class or series of the Company's capital stock or pursuant to an
acquisition in which fractional shares of the Company's capital stock would
otherwise be issued, (e) the purchase of fractional interests in shares of the
Company's capital stock pursuant to the conversion or exchange provisions of
such capital stock or the security being converted or exchanged, and (f)
purchases of common stock related to the issuance of common stock or rights
under any benefit plan for directors, officers, agents or employees of the
Company or its subsidiaries or any of the Company's dividend reinvestment or
director, officer, agent or employee stock purchase plans).
 
  Prior to the termination of any such Extension Period, the Company may
further extend such Extension Period, provided that such extension does not
cause the Extension Period to exceed 10 consecutive semi-annual periods or to
extend beyond the Stated Maturity Date. Upon the termination of any such
Extension Period and the payment of all amounts then due on any Interest
Payment Date, the Company may elect to begin a new Extension Period, subject
to the above requirements. No interest shall be due and payable during an
Extension Period, except at the end thereof. The Company must give the
Property Trustee, the Administrative Trustees and the Debenture Trustee notice
of its election of any Extension Period (or an extension thereof) at least
five Business Days prior to the earlier of (i) the date the Distributions on
the Trust Securities would have been payable except for the election to begin
or extend such Extension Period or (ii) the date the Administrative Trustees
are required to give notice to any securities exchange or to holders of
Capital Securities of the record
 
                                      58
<PAGE>
 
date or the date such Distributions are payable, but in any event not less
than five Business Days prior to such record date. The Debenture Trustee shall
give notice of the Company's election to begin or extend a new Extension
Period to the holders of the Capital Securities. There is no limitation on the
number of times that the Company may elect to begin an Extension Period.
 
SPECIAL EVENT PREPAYMENT
 
  If a Special Event (as defined herein) shall occur and be continuing, the
Company may, at its option, prepay the Junior Subordinated Debentures in whole
(but not in part) within 90 days of the occurrence of such Special Event, at a
prepayment price (the "Special Event Prepayment Price") equal to the greater
of (i) 100% of the principal amount of such Junior Subordinated Debentures or
(ii) the sum, as determined by a Quotation Agent, of the present values of the
principal amount of such Junior Subordinated Debentures, together with
scheduled payments of interest from the prepayment date to the Stated Maturity
Date, in each case discounted to the prepayment date on a semi-annual basis
(assuming a 360-day year consisting of 30-day months) at the Adjusted Treasury
Rate, plus, in each case, accrued interest thereon to the date of prepayment.
 
  A "Special Event" means a Tax Event or an Investment Company Event (each as
defined herein), as the case may be.
 
  A "Tax Event" means that the Administrative Trustees shall have received an
opinion of nationally recognized tax counsel experienced in such matters to
the effect that, as a result of (a) any amendment to, or change (including any
announced prospective change) in, the laws or any regulations thereunder of
the United States or any political subdivision or taxing authority thereof or
therein, or (b) any official administrative pronouncement or judicial decision
interpreting or applying such laws or regulations, which amendment or change
is effective or such pronouncement or decision is announced on or after
January 29, 1997, there is more than an insubstantial risk that (i) the Trust
is, or as a result of the issuance of the Exchange Securities would be or will
be within 90 days of the date of such opinion, subject to United States
federal income tax with respect to income received or accrued on the Junior
Subordinated Debentures or any of the Exchange Securities, (ii) interest
payable by the Company on the Junior Subordinated Debentures or any of the
Exchange Securities is not, or within 90 days of the date of such opinion will
not be, deductible by the Company, in whole or in part, for United States
federal income tax purposes, or (iii) the Trust is, or will be within 90 days
of the date of such opinion, subject to more than a de minimis amount of other
taxes, duties or other governmental charges.
 
  An "Investment Company Event" means that the Administrative Trustees shall
have received an opinion from counsel to the Company experienced in such
matters to the effect that, as a result of the occurrence of a change in law
or regulation or a written change (including any announced prospective change)
in interpretation or application of law or regulation by any legislative body,
court, governmental agency or regulatory authority (a "Change in 1940 Act
Law"), there is more than an insubstantial risk that the Trust is or will be
considered an "investment company" which is required to be registered under
the Investment Company Act of 1940, as amended (the "1940 Act"), which Change
in 1940 Act Law becomes or would become effective on or after January 29,
1997.
 
  "Adjusted Treasury Rate" means, with respect to any prepayment date, the
rate per annum equal to (i) the yield, under the heading which represents the
average for the immediately prior week, appearing in the most recently
published statistical release designated "H.15 (519)" or any successor
publication which is published weekly by the Federal Reserve Board and which
establishes yields on actively traded United States Treasury securities
adjusted to constant maturity under the caption "Treasury Constant
Maturities," for the maturity corresponding to the Stated Maturity Date (if no
maturity is within three months before or after the Stated Maturity Date,
yields for the two published maturities most closely corresponding to the
Stated Maturity Date shall be interpolated and the Adjusted Treasury Rate
shall be interpolated or extrapolated from such yields on a straight-line
basis, rounding to the nearest month) or (ii) if such release (or any
successor release) is not published during the week preceding the calculation
date or does not contain such yields, the rate per annum equal to the semi-
annual equivalent yield to maturity of the Comparable Treasury Issue,
calculated using a price for the
 
                                      59
<PAGE>
 
Comparable Treasury Issue (expressed as a percentage of its principal amount)
equal to the Comparable Treasury Price for such prepayment date, in each case
calculated on the third Business Day preceding the prepayment date, plus in
each case (a) 1.02% if such prepayment date occurs on or prior to February 3,
1998 and (b) .50% in all other cases.
 
  "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the Stated
Maturity Date of the Junior Subordinated Debentures to be prepaid that would
be utilized, at the time of selection and in accordance with customary
financial practice, in pricing new issues of corporate debt securities of
comparable maturity with the Stated Maturity Date of the Junior Subordinated
Debentures. If no United States Treasury security has a maturity which is
within a period from three months before to three months after the Stated
Maturity Date, the two most closely corresponding United States Treasury
securities shall be used as the Comparable Treasury Issue, and the Adjusted
Treasury Rate shall be interpolated or extrapolated on a straight-line basis,
rounding to the nearest month using such securities.
 
  "Quotation Agent" means the Reference Treasury Dealer appointed by the
Company. "Reference Treasury Dealer" means: (i) Merrill Lynch Government
Securities, Inc. and their respective successors; provided, however, that if
the foregoing shall cease to be a primary U.S. Government securities dealer in
New York City (a "Primary Treasury Dealer"), the Company shall substitute
therefor another Primary Treasury Dealer; and (ii) any other Primary Treasury
Dealer selected by the Debenture Trustee after consultation with the Company.
 
  "Comparable Treasury Price" means, with respect to any prepayment date, (i)
the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
Business Day preceding such prepayment date, as set forth in the daily
statistical release (or any successor release) published by the Federal
Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations for
U.S. Government Securities" or (ii) if such release (or any successor release)
is not published or does not contain such prices on such Business Day, (a) the
average of the five Reference Treasury Dealer Quotations for such prepayment
date, after excluding the highest and lowest of such Reference Treasury Dealer
Quotations, or (b) if the Debenture Trustee obtains fewer than three such
Reference Treasury Dealer Quotations, the average of all such quotations.
 
  "Additional Sums" means such additional amounts as may be necessary in order
that the amount of Distributions then due and payable by the Trust on the
outstanding Capital Securities and Common Securities shall not be reduced as a
result of any additional taxes, duties and other governmental charges to which
the Trust has become subject as a result of a Tax Event.
 
  "Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer and any prepayment date, the average, as determined by the
Debenture Trustee, of the bid and asked prices for the Comparable Treasury
Issue (expressed in each case as a percentage of its principal amount) quoted
in writing to the Debenture Trustee by such Reference Treasury Dealer at 5:00
p.m., New York City time, on the third Business Day preceding such prepayment
date.
 
  Notice of any prepayment will be mailed at least 30 days but not more than
60 days before the redemption date to each holder of Junior Subordinated
Debentures to be prepaid at its registered address. Unless the Company
defaults in payment of the prepayment price, on and after the prepayment date
interest ceases to accrue on such Junior Subordinated Debentures called for
prepayment.
 
  If the Trust is required to pay any additional taxes, duties or other
governmental charges as a result of a Tax Event, the Company will pay as
additional amounts on the Junior Subordinated Debentures the Additional Sums.
 
CERTAIN COVENANTS OF THE COMPANY
 
  The Company covenants that it will not (i) declare or pay any dividends or
distributions on, or redeem, purchase, acquire, or make a liquidation payment
with respect to, any of the Company's capital stock (which
 
                                      60
<PAGE>
 
includes common and preferred stock), (ii) make any payment of principal,
interest or premium, if any, on or repay, repurchase or redeem any debt
securities of the Company (including any Other Debentures) that rank pari
passu with or junior in right of payment to the Junior Subordinated Debentures
or (iii) make any guarantee payments with respect to any guarantee by the
Company of any securities of any subsidiary of the Company (including Other
Guarantees) if such guarantee ranks pari passu with or junior in right of
payment to the Junior Subordinated Debentures (other than (a) dividends or
distributions in shares of or options, warrants or rights to subscribe for or
purchase shares of, common stock of the Company, (b) any declaration of a
dividend in connection with the implementation of a stockholder's rights plan,
or the issuance of stock under any such plan in the future, or the redemption
or repurchase of any such rights pursuant thereto, (c) payments under the
Guarantee, (d) as a direct result of, and only to the extent required in order
to avoid the issuance of fractional shares of capital stock following, a
reclassification of the Company's capital stock or the exchange or conversion
of one class or series of the Company's capital stock for another class or
series of the Company's capital stock or pursuant to an acquisition in which
fractional shares of the Company's capital stock would otherwise be issued,
(e) the purchase of fractional interests in shares of the Company's capital
stock pursuant to the conversion or exchange provisions of such capital stock
or the security being converted or exchanged, and (f) purchases of common
stock related to the issuance of common stock or rights under any benefit plan
for directors, officers, agents or employees of the Company or its
subsidiaries or any of the Company's dividend reinvestment or director,
officer, agent or employee stock purchase plans) if at such time (1) a
Debenture Event of Default shall have occurred and be continuing, or would
occur upon the taking of any action specified in clauses (i) through (iii)
above, (2) there shall have occurred any event of which the Company has actual
knowledge that (a) with the giving of notice or the lapse of time, or both,
would constitute a Debenture Event of Default and (b) in respect of which the
Company shall not have taken reasonable steps to cure, (3) the Company shall
be in default with respect to its payment of any obligations under the
Guarantee or (4) the Company shall have given notice of its election of an
Extension Period or any extension thereof, as provided in the Indenture or an
extension period with respect to any Other Debentures, and shall not have
rescinded such notice, and such Extension Period, or any extension thereof, or
extension period with respect to Other Debentures, shall be continuing.
 
  The Company will also covenant (i) to directly or indirectly maintain 100
percent ownership of the Common Securities of the Trust; provided, however,
that any permitted successor of the Company under the Indenture may succeed to
the Company's ownership of the Common Securities, (ii) to use its reasonable
efforts to cause the Trust (a) to remain a statutory business trust, except in
connection with the distribution of Junior Subordinated Debentures to the
holders of Trust Securities in liquidation of the Trust, the redemption of all
of the Trust Securities of the Trust, or certain mergers, consolidations or
amalgamations, each as permitted by the Declaration of the Trust, and (b) to
otherwise continue not to be treated as an association taxable as a
corporation or a partnership for United States federal income tax purposes and
(iii) to use its reasonable efforts to cause each holder of Trust Securities
to be treated as owning an undivided beneficial interest in the Junior
Subordinated Debentures.
 
DEBENTURE EVENTS OF DEFAULT
 
  The Indenture provides that any one or more of the following described
events with respect to the Junior Subordinated Debentures constitutes a
"Debenture Event of Default" (whatever the reason for such Debenture Event of
Default and whether it shall be voluntary or involuntary or be effected by
operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):
 
    (i) failure for 30 days to pay any interest on the Junior Subordinated
  Debentures or any Other Debentures, when due (subject to the deferral of
  any due date in the case of an Extension Period or an extension period with
  respect to Other Debentures); or
 
    (ii) failure to pay any principal or premium, if any, on the Junior
  Subordinated Debentures or any Other Debentures when due whether at
  maturity, upon redemption, by declaration of acceleration of maturity or
  otherwise; or
 
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<PAGE>
 
    (iii) failure to observe or perform in any material respect certain other
  covenants contained in the Indenture for 90 days after written notice to
  the Company from the Debenture Trustee or the holders of at least 25% in
  aggregate outstanding principal amount of Junior Subordinated Debentures;
  or
 
    (iv) certain events in bankruptcy, insolvency or reorganization of the
  Company.
 
  The holders of a majority in aggregate outstanding principal amount of the
Junior Subordinated Debentures have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Debenture
Trustee. The Debenture Trustee or the holders of not less than 25% in
aggregate outstanding principal amount of the Junior Subordinated Debentures
may declare the principal due and payable immediately upon a Debenture Event
of Default. The holders of a majority in aggregate outstanding principal
amount of the Junior Subordinated Debentures may annul such declaration and
waive the default if the default (other than the nonpayment of the principal
of the Junior Subordinated Debentures which has become due solely by such
acceleration) has been cured and a sum sufficient to pay all matured
installments of interest and principal due otherwise than by acceleration has
been deposited with the Debenture Trustee.
 
  The holders of a majority in aggregate outstanding principal amount of the
Junior Subordinated Debentures affected thereby may, on behalf of the holders
of all the Junior Subordinated Debentures, waive any past default except a
default in the payment of principal of or premium, if any, on or interest
(unless such default has been cured and a sum sufficient to pay all matured
installments of interest and premium, if any, and principal due otherwise than
by acceleration has been deposited with the Debenture Trustee) or a default in
respect of a covenant or provision which under the Indenture cannot be
modified or amended without the consent of the holder of each outstanding
Junior Subordinated Debenture.
 
  The Indenture requires the annual filing by the Company with the Debenture
Trustee of a certificate as to the absence of certain defaults under the
Indenture.
 
  The Indenture provides that the Debenture Trustee may withhold notice of a
Debenture Event of Default from the holders of the Junior Subordinated
Debentures (except a Debenture Event of Default in payment of principal of, or
of interest or premium on, the Junior Subordinated Debentures) if the
Debenture Trustee considers it in the interest of the holders to do so.
 
ENFORCEMENT OF CERTAIN RIGHTS BY HOLDERS OF CAPITAL SECURITIES
 
  Pursuant to the Declaration, if a Debenture Event of Default shall have
occurred and be continuing and shall be attributable to the failure of the
Company to pay interest or premium, if any, on or principal of the Junior
Subordinated Debentures on the due date, a holder of Capital Securities may
institute a Direct Action. The Company may not amend the Indenture to remove
the foregoing right to bring a Direct Action without the prior written consent
of the holders of all of the Capital Securities. Notwithstanding any payments
made to a holder of Capital Securities by the Company in connection with a
Direct Action, the Company shall remain obligated to pay the principal of or
premium, if any, or interest on the Junior Subordinated Debentures, and the
Company shall be subrogated to the rights of the holder of such Capital
Securities with respect to payments on the Capital Securities to the extent of
any payments made by the Company to such holder in any Direct Action.
 
  The holders of the Capital Securities will not be able to exercise directly
any remedies, other than those set forth in the preceding paragraph, available
to the holders of the Junior Subordinated Debentures. See "Description of
Capital Securities--Events of Default; Notice."
 
CONSOLIDATION, MERGER, SALE OF ASSETS AND OTHER TRANSACTIONS
 
  The Indenture provides that the Company shall not consolidate with or merge
with or into any other Person or sell, convey, assign, transfer, lease or
otherwise dispose of all or substantially all of its properties and assets as
an entirety to any Person, unless; (i) the person formed by such consolidation
or into which the Company is merged or the Person which acquires by sale,
assignment, conveyance, transfer, lease or disposition is a
 
                                      62
<PAGE>
 
corporation, trust or partnership organized under the laws of the United
States or any State or the District of Columbia, and such successor expressly
assumes the Company's obligations on the Junior Subordinated Debentures; (ii)
immediately before and immediately after giving effect thereto, no Debenture
Event of Default, and no event which, after notice or lapse of time or both,
would become a Debenture Event of Default, shall have occurred and be
continuing; and (iii) certain other conditions as prescribed in the Indenture
are met. This provision shall only apply to a merger or consolidation in which
the Company is not the surviving corporation and to conveyances, leases and
transfers by the Company as transferor or lessor of all or substantially all
of the properties and assets of the Company to any Person.
 
  Upon any consolidation by the Company with or merger by the Company into any
other corporation or any sale, assignment, conveyance, transfer, disposition
or lease of all or substantially all of the properties and assets of the
Company as an entirety to any Person in accordance with the conditions listed
in the immediately preceding paragraph, the successor Person formed by such
consolidation or into which the Company is merged or to which such conveyance,
transfer or lease is made shall succeed to, and be substituted for, and may
exercise every right and power of, the Company under the Indenture, and in the
event of any such conveyance or transfer, the Company, except in the case of a
lease, shall be discharged of all obligations and covenants under the
Indenture and the Junior Subordinated Debentures and may be dissolved and
liquidated.
 
  The general provisions of the Indenture do not afford holders of the Junior
Subordinated Debentures protection in the event of a highly leveraged or other
transaction involving the Company that may adversely affect holders of the
Junior Subordinated Debentures.
 
  Additionally, state insurance holding company statutes applicable to the
Company due to its insurance company subsidiaries generally provide that no
person may acquire control of the Company, and thus indirect control of its
insurance subsidiaries, without prior approval of the appropriate insurance
regulators. Generally, any person who acquires beneficial ownership of 10% or
more of the outstanding shares of the Company's Common Stock would be presumed
to have acquired such control, unless the appropriate insurance regulators
upon application determine otherwise.
 
MODIFICATION OF THE INDENTURE
 
  From time to time the Company and the Debenture Trustee may, without the
consent of the holders of Junior Subordinated Debentures, amend, waive or
supplement the Indenture for specified purposes, including, among other
things, curing ambiguities, defects or inconsistencies (provided that any such
action does not materially adversely affect the interest of the holders of
Junior Subordinated Debentures). The Indenture contains provisions permitting
the Company and the Debenture Trustee, with the consent of the holders of a
majority in principal amount of the Junior Subordinated Debentures, to modify
the Indenture in a manner affecting the rights of the holders of Junior
Subordinated Debentures; provided that no such modification may, without the
consent of the holders of each outstanding Junior Subordinated Debenture so
affected, (i) change the Stated Maturity Date or reduce the principal amount
of the Junior Subordinated Debentures or reduce the rate or extend the time of
payment of interest thereon or (ii) reduce the percentage of principal amount
of Junior Subordinated Debentures the holders of which are required to consent
to any such modification of the Indenture.
 
SATISFACTION AND DISCHARGE
 
  The Indenture provides that when, among other things, all Junior
Subordinated Debentures not previously delivered to the Debenture Trustee for
cancellation (i) have become due and payable or (ii) will become due and
payable at maturity or upon redemption within one year, and the Company
deposits or causes to be deposited with the Debenture Trustee funds, in trust,
for the purpose and in an amount sufficient to pay and discharge the entire
indebtedness on the Junior Subordinated Debentures not previously delivered to
the Debenture Trustee for cancellation, for the principal and premium, if any,
and interest to the date of the deposit or to the Stated Maturity Date, as the
case may be, then the Indenture will cease to be of further effect (except as
to the Company's obligations to pay all other sums due pursuant to the
Indenture and to provide the officers' certificates and
 
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opinions of counsel described therein), and the Company will be deemed to have
satisfied and discharged the Indenture.
 
SUBORDINATION
 
  In the Indenture, the Company has covenanted and agreed that any Junior
Subordinated Debentures issued thereunder will be subordinate and junior in
right of payment to all Senior Indebtedness to the extent provided in the
Indenture. Upon any payment or distribution of assets to creditors upon any
liquidation, dissolution, winding up, reorganization, assignment for the
benefit of creditors, marshaling of assets or any bankruptcy, insolvency, or
similar proceedings, the holders of Senior Indebtedness will first be entitled
to receive payment in full in cash or other satisfactory consideration of all
amounts due or to become due on or in respect of such Senior Indebtedness
before the holders of Junior Subordinated Debentures will be entitled to
receive or retain any payment in respect thereof.
 
  In the event of the acceleration of the maturity of Junior Subordinated
Debentures, the holders of all Senior Indebtedness outstanding at the time of
such acceleration will first be entitled to receive payment in full in cash or
other satisfactory consideration of all such Senior Indebtedness before the
holders of Junior Subordinated Debentures will be entitled to receive or
retain any payment in respect of the Junior Subordinated Debentures.
 
  No payments on account of principal or premium, if any, or interest, if any,
in respect of the Junior Subordinated Debentures may be made if there shall
have occurred and be continuing a default in any payment with respect to
Senior Indebtedness, or in the event the acceleration of the maturity thereof
has been or would be permitted with notice or the passage of time, or if any
judicial proceeding shall be pending with respect to any such default until
all amounts due or to become due on the Senior Indebtedness are paid in full
in cash or other satisfactory consideration.
 
  "Indebtedness" shall mean (i) any obligation of, or any obligation
guaranteed by, the Company for which the Company is responsible or liable as
obligor or otherwise including principal, premium, and interest (whether
accruing before or after filing of any petition in bankruptcy or any similar
proceedings by or against the Company and whether or not allowed as a claim in
bankruptcy or similar proceedings) for (A) indebtedness of the Company for
money borrowed and (B) indebtedness evidenced by securities, bonds,
debentures, notes or other similar written instruments (C) any deferred
obligation for the payment of the purchase price or conditional sale
obligation of property or assets acquired other than in the ordinary course of
business, (D) all obligations of the Company for the reimbursement of any
letter of credit, banker's acceptance, security purchase facility or similar
credit transaction, (E) all obligations of the Company under "keep-well"
agreements required by insurance regulators or (F) any obligation referred to
in (A) through (E) above of other persons secured by any lien on any property
or asset of the Company and (ii) all indebtedness of the Company for
obligations of the Company to make payment in respect of derivative products
such as interest and foreign exchange rate contracts, commodity contracts
(including future or options contracts) swap agreements, cap agreements,
repurchase and reverse repurchase agreements and similar arrangements, whether
outstanding on the date of execution of the Indenture or thereafter created,
assumed or incurred.
 
  "Indebtedness Ranking on a Parity with the Junior Subordinated Debentures"
shall mean Indebtedness, whether outstanding on the date of execution of the
Indenture or thereafter created, assumed or incurred, which specifically by
its terms ranks equally with and not prior to the Junior Subordinated
Debentures in the right of payment upon the happening of the dissolution or
winding-up or liquidation or reorganization of the Company. The securing of
any Indebtedness, otherwise constituting Indebtedness Ranking on a Parity with
the Junior Subordinated Debentures, shall not be deemed to prevent such
Indebtedness from constituting Indebtedness Ranking on a Parity with the
Junior Subordinated Debentures.
 
  "Indebtedness Ranking Junior to the Junior Subordinated Debentures" shall
mean any Indebtedness, whether outstanding on the date of execution of the
Indenture or thereafter created, assumed or incurred, which specifically by
its terms ranks junior to and not equally with or prior to the Junior
Subordinated Debentures (and
 
                                      64
<PAGE>
 
any other Indebtedness Ranking on a Parity with the Junior Subordinated
Debentures) in right of payment upon the happening of the dissolution or
winding-up or liquidation or reorganization of the Company. The securing of
any Indebtedness, otherwise constituting Indebtedness Ranking Junior to the
Junior Subordinated Debentures, shall not be deemed to prevent such
Indebtedness from constituting Indebtedness Ranking Junior to the Junior
Subordinated Debentures.
 
  "Senior Indebtedness" shall mean all Indebtedness, whether outstanding on
the date of execution of the Indenture or thereafter created, assumed or
incurred, except Indebtedness Ranking on a Parity with the Junior Subordinated
Debentures or Indebtedness Ranking Junior to the Junior Subordinated
Debentures, and any deferrals, renewals or extension of such Senior
Indebtedness.
 
  The Indenture does not limit the aggregate amount of Senior Indebtedness
that may be issued or entered into by the Company. As of March 31, 1997,
Senior Indebtedness of the Company aggregated approximately $199.5 million. In
addition, because the Company is a holding company, the Junior Subordinated
Debentures are effectively subordinated to all existing and future liabilities
of the Company's subsidiaries. See "Risk Factors--Holding Company Structure;
Structural Subordination and Leverage."
 
GOVERNING LAW
 
  The Indenture and the Junior Subordinated Debentures will be governed by,
and construed in accordance with, the internal laws of the State of New York.
 
INFORMATION CONCERNING THE DEBENTURE TRUSTEE
 
  Following the Exchange Offer and the qualification of the Indenture under
the Trust Indenture Act, the Debenture Trustee shall have and be subject to
all the duties and responsibilities specified with respect to an indenture
trustee under the Trust Indenture Act. Subject to such provisions, the
Debenture Trustee is under no obligation to exercise any of the powers vested
in it by the Indenture at the request of any holder of Junior Subordinated
Debentures, unless offered reasonable indemnity by such holder against the
costs, expenses and liabilities which might be incurred thereby. The Debenture
Trustee is not required to expend or risk its own funds or otherwise incur
personal financial liability in the performance of its duties if the Debenture
Trustee reasonably believes that repayment or adequate indemnity is not
reasonably assured to it.
 
                         DESCRIPTION OF NEW GUARANTEE
 
  The Old Guarantee was executed and delivered by the Company concurrently
with the issuance by the Trust of the Old Capital Securities for the benefit
of the holders from time to time of the Old Capital Securities. Promptly after
the Expiration Date, the Old Guarantee will be exchanged by the Company for
the New Guarantee for the benefit of the holders from time to time of the New
Capital Securities. The Guarantee Agreement has been qualified under the Trust
Indenture Act. This summary of certain provisions of the Guarantee Agreement
does not purport to be complete and is subject to, and qualified in its
entirety by reference to, all of the provisions of the Guarantee Agreement,
including the definitions therein of certain terms, and the Trust Indenture
Act. The Guarantee Trustee will hold the New Guarantee for the benefit of the
holders of the New Capital Securities.
 
GENERAL
 
  The Company will irrevocably agree to pay in full on a subordinated basis,
to the extent set forth herein, the Guarantee Payments (as defined below) to
the holders of the New Capital Securities, as and when due, regardless of any
defense, right of set-off or counterclaim that the Trust may have or assert
other than the defense of payment. The following payments with respect to the
New Capital Securities, to the extent not paid by or on behalf of the Trust
(the "Guarantee Payments"), will be subject to the New Guarantee: (i) any
accumulated and unpaid Distributions required to be paid on New Capital
Securities, to the extent the Trust has funds on hand
 
                                      65
<PAGE>
 
legally available therefor, (ii) the Redemption Price with respect to any New
Capital Securities called for redemption, to the extent that the Trust has
funds on hand legally available therefor, or (iii) upon a voluntary or
involuntary termination and liquidation of the Trust (unless the New Junior
Subordinated Debentures are distributed to holders of the Capital Securities),
the lesser of (a) the Liquidation Distribution, to the extent that the Trust
has funds on hand legally available therefor, and (b) the amount of assets of
the Trust remaining available for distribution to holders of New Capital
Securities. The Company's obligation to make a Guarantee Payment may be
satisfied by direct payment of the required amounts by the Company to the
holders of the New Capital Securities or by causing the Trust to pay such
amounts to such holders.
 
  The New Guarantee will rank subordinate and junior in right of payment to
all Senior Indebtedness to the extent provided therein. See "--Status of New
Guarantee" below. Because the Company is a holding company, the right of the
Company to participate in any distribution of assets of any subsidiary upon
such subsidiary's liquidation or reorganization or otherwise is subject to the
prior claims of creditors of that subsidiary, except to the extent the Company
may itself be recognized as a creditor of that subsidiary. Accordingly, the
Company's obligations under the New Guarantee will be effectively subordinated
to all existing and future liabilities of the Company's subsidiaries, and
claimants should look only to the assets of the Company for payments
thereunder. See "Description of New Junior Subordinated Debentures--General."
The New Guarantee does not limit the incurrence or issuance of other secured
or unsecured debt of the Company, including Senior Indebtedness, whether under
the Indenture, any other indenture that the Company may enter into in the
future or otherwise.
 
  The Company will, through the New Guarantee, the Declaration, the New Junior
Subordinated Debentures and the Indenture, taken together, fully, irrevocably
and unconditionally guarantee all of the Trust's obligations under the New
Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other documents constitutes such
guarantee. It is only the combined operation of these documents that has the
effect of providing a full, irrevocable and unconditional guarantee of the
Trust's obligations under the New Capital Securities. See "Relationship Among
the New Capital Securities, the New Junior Subordinated Debentures and the New
Guarantee."
 
STATUS OF NEW GUARANTEE
 
  The New Guarantee will constitute an unsecured obligation of the Company and
will rank subordinate and junior in right of payment to all Senior
Indebtedness in the same manner as the New Junior Subordinated Debentures.
 
  The New Guarantee will rank pari passu with the Old Guarantee and with all
Other Guarantees (if any) issued by the Company after the Issue Date with
respect to capital securities (if any) issued by Other Trusts. The New
Guarantee will constitute a guarantee of payment and not of collection (i.e.,
the guaranteed party may institute a legal proceeding directly against the
Company to enforce its rights under the New Guarantee without first
instituting a legal proceeding against any other person or entity). The New
Guarantee will not be discharged except (i) by payment of the Guarantee
Payments in full to the extent not paid by the Trust or (ii) upon distribution
to the holders of the New Capital Securities of the New Junior Subordinated
Debentures. The Guarantee does not place a limitation on the amount of
additional Senior Indebtedness that may be incurred by the Company. The
Company expects from time to time to incur additional indebtedness
constituting Senior Indebtedness.
 
EVENTS OF DEFAULT
 
  An event of default under the New Guarantee will occur upon the failure of
the Company to perform any of its payment or other obligations thereunder.
Subject to certain limited exceptions, the holders of a majority in
liquidation amount of the New Capital Securities have the right to direct the
time, method and place of conducting any proceeding for any remedy available
to the Guarantee Trustee in respect of the New Guarantee or to direct the
exercise of any trust or power conferred upon the Guarantee Trustee under the
New Guarantee.
 
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<PAGE>
 
  If the Guarantee Trustee fails to enforce the Guarantee, any holder of New
Capital Securities may institute a legal proceeding directly against the
Company to enforce the Trustee's rights and the obligations of the Company
under the New Guarantee, without first instituting a legal proceeding against
the Trust, the Guarantee Trustee or any other person or entity.
 
  The Company, as guarantor, will be required to file annually with the
Guarantee Trustee a certificate as to whether or not the Company is in
compliance with all the conditions and covenants applicable to it under the
New Guarantee.
 
CERTAIN COVENANTS OF THE COMPANY
 
  In the New Guarantee, the Company will covenant that, so long as any New
Capital Securities remain outstanding, if (a)(i) a Debenture Event of Default
shall have occurred and be continuing or (ii) there shall have occurred any
event of which the Company has actual knowledge that (A) is, or with the
giving of notice or the lapse of time, or both, would be, an Event of Default
and (B) in respect of which the Company shall not have taken reasonable steps
to cure, or (b) the Company shall have elected to exercise its right to extend
the interest payment period under the Indenture and such extension shall be
continuing, then the Company shall not (i) declare or pay any dividends or
distributions on, or redeem, purchase, acquire, or make a liquidation payment
with respect to, any of the Company's capital stock (which includes common and
preferred stock), (ii) make any payment of principal, interest or premium, if
any, on or repay, repurchase or redeem any debt securities of the Company
(including any Other Debentures) that rank pari passu with or junior in right
of payment to the Junior Subordinated Debentures or (iii) make any guarantee
payments with respect to any guarantee by the Company of any securities of any
subsidiary of the Company (including Other Guarantees) if such guarantee ranks
pari passu with or junior in right of payment to the Junior Subordinated
Debentures (other than (a) dividends or distributions in shares of or options,
warrants or rights to subscribe for or purchase shares of, common stock of the
Company, (b) any declaration of a dividend in connection with the
implementation of a stockholder's rights plan, or the issuance of stock under
any such plan in the future, or the redemption or repurchase of any such
rights pursuant thereto, (c) payments under the Guarantee, (d) as a direct
result of, and only to the extent required in order to avoid the issuance of
fractional shares of capital stock following, a reclassification of the
Company's capital stock or the exchange or conversion of one class or series
of the Company's capital stock for another class or series of the Company's
capital stock or pursuant to an acquisition in which fractional shares of the
Company's capital stock would otherwise be issued, (e) the purchase of
fractional interests in shares of the Company's capital stock pursuant to the
conversion or exchange provisions of such capital stock or the security being
converted or exchanged, and (f) purchases of common stock related to the
issuance of common stock or rights under any of the Company's benefit plans
for directors, officers, agents or employees of the Company or its
subsidiaries or any of the Company's dividend reinvestment or director,
officer, agent or employee stock purchase plans).
 
AMENDMENTS AND ASSIGNMENT
 
  Except with respect to any changes that do not materially adversely affect
the rights of holders of the New Capital Securities (in which case no consent
will be required), the New Guarantee may not be amended without the prior
approval of the holders of a majority of the Liquidation Amount of such
outstanding New Capital Securities. The manner of obtaining any such approval
will be as set forth under "--Description of New Capital Securities--Voting
Rights; Amendment of the Declaration." All guarantees and agreements contained
in the Guarantee Agreement shall bind the successors, assigns, receivers,
trustees and representatives of the Company and shall inure to the benefit of
the holders of the New Capital Securities then outstanding.
 
TERMINATION
 
  The New Guarantee will terminate upon full payment of the applicable
Redemption Price of the Capital Securities, upon full payment of the
Liquidation Amount payable upon liquidation of the Trust or upon
 
                                      67
<PAGE>
 
distribution of the New Junior Subordinated Debentures to the holders of the
New Capital Securities. Notwithstanding the foregoing, the New Guarantee will
continue to be effective or will be reinstated, as the case may be, if at any
time any holder of New Capital Securities issued by the Trust must restore
payment of any sums paid under such New Capital Securities or the New
Guarantee.
 
INFORMATION CONCERNING THE GUARANTEE TRUSTEE
 
  The Guarantee Trustee, prior to the occurrence of a default and after the
curing or waiving of all defaults that may have occurred with respect to the
Guarantee, undertakes to perform only such duties as are specifically set
forth in the New Guarantee and, after default, shall exercise the same degree
of care as a prudent individual would exercise in the conduct of his or her
own affairs. Subject to such provisions, the Guarantee Trustee is under no
obligation to exercise any of the powers vested in it by the New Guarantee at
the request of any holder of New Capital Securities, unless offered reasonable
indemnity against the costs, expenses and liabilities which might be incurred
thereby.
 
  The Company and certain of its subsidiaries may, from time to time, conduct
certain banking transactions with the Guarantee Trustee in the ordinary course
of business.
 
GOVERNING LAW
 
  The Guarantee will be governed by and construed in accordance with the
internal laws of the State of New York.
 
                         DESCRIPTION OF OLD SECURITIES
 
  The terms of the Old Securities are identical in all material respects to
the New Securities, except that (i) the Old Securities have not been
registered under the Securities Act, and thus are subject to certain transfer
restrictions and are entitled to certain rights under the applicable
Registration Rights Agreement (which rights will terminate upon consummation
of the Exchange Offer, except under limited circumstances), (ii) the New
Capital Securities will not contain the $100,000 minimum Liquidation Amount
transfer restriction and certain other restrictions on transfer applicable to
Old Capital Securities, (iii) the New Capital Securities will not provide for
any increase in the Distribution rate thereon, (iv) the New Junior
Subordinated Debentures will not contain the $100,000 minimum principal amount
transfer restriction and (v) the New Junior Subordinated Debentures will not
provide for any increase in the liquidated damages thereon. The Old Securities
provide that, in the event that a registration statement relating to the
Exchange Offer has not been declared effective by August 2, 1997, or, in
certain limited circumstances, in the event a shelf registration statement
(the "Shelf Registration Statement") with respect to the resale of the Old
Capital Securities is not declared effective by August 2, 1997, then
liquidated damages will accumulate (in addition to the stated interest rate on
the Old Junior Subordinated Debentures) at the rate of 0.25% per annum on the
principal amount of the Old Junior Subordinated Debentures and Distributions
will accrue (in addition to the stated Distribution rate on the Old Capital
Securities) at the rate of 0.25% per annum on the Liquidation Amount of the
Old Capital Securities, for the period from the occurrence of such event until
such time as such required Exchange Offer is consummated or any required Shelf
Registration Statement is effective. The New Securities are not, and upon
consummation of the Exchange Offer the Old Securities will not be, entitled to
any such additional interest or Distributions. Accordingly, holders of Old
Capital Securities should review the information set forth under "Risk
Factors--Certain Consequences of a Failure to Exchange Old Capital Securities"
and "Description of New Securities."
 
                                      68
<PAGE>
 
              RELATIONSHIP AMONG THE NEW CAPITAL SECURITIES, THE
           NEW JUNIOR SUBORDINATED DEBENTURES AND THE NEW GUARANTEE
 
FULL AND UNCONDITIONAL GUARANTEE
 
  Payments of Distributions and other amounts due on the New Capital
Securities (to the extent the Trust has funds on hand legally available for
the payment of such Distributions) will be irrevocably guaranteed by the
Company as and to the extent set forth under "Description of the New
Guarantee." Taken together, the Company's obligations under the New Junior
Subordinated Debentures, the Indenture, the Declaration and the New Guarantee
will provide, in the aggregate, a full, irrevocable and unconditional
guarantee of payments of Distributions and other amounts due on the New
Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other documents constitutes such
guarantee. It is only the combined operation of these documents that has the
effect of providing a full, irrevocable and unconditional guarantee of the
Trust's obligations under the New Capital Securities. If and to the extent
that the Company does not make the required payments on the New Junior
Subordinated Debentures, the Trust will not have sufficient funds to make the
related payments, including Distributions, on the New Capital Securities. The
New Guarantee will not cover any such payment when the Trust does not have
sufficient funds on hand legally available therefor. In such event, the remedy
of a holder of New Capital Securities is to institute a Direct Action. The
obligations of the Company under the Guarantee will be subordinate and junior
in right of payment to all Senior Indebtedness.
 
SUFFICIENCY OF PAYMENTS
 
  As long as payments of interest and other payments are made when due on the
New Junior Subordinated Debentures, such payments will be sufficient to cover
Distributions and other payments due on the New Capital Securities, primarily
because: (i) the aggregate principal amount or Special Event Prepayment Price
of the New Junior Subordinated Debentures will be equal to the sum of the
Liquidation Amount or Redemption Price, as applicable, of the New Capital
Securities and Common Securities; (ii) the interest rate and interest and
other payment dates on the New Junior Subordinated Debentures will match the
Distribution rate and Distribution and other payment dates for the Trust
Securities; (iii) the Company shall pay for all and any costs, expenses and
liabilities of the Trust except the Trust's obligations to holders of Trust
Securities under such Trust Securities; and (iv) the Declaration will provide
that the Trust is not authorized to engage in any activity that is not
consistent with the limited purposes thereof.
 
ENFORCEMENT OF RIGHTS OF HOLDERS OF CAPITAL SECURITIES
 
  If the Guarantee Trustee fails to enforce the Guarantee, a holder of any New
Capital Security may institute a legal proceeding against the Company to
enforce its rights under the Guarantee without first instituting a legal
proceeding against the Guarantee Trustee, the Trust or any other person or
entity.
 
  A default or event of default under any Senior Indebtedness would not
constitute a default or Event of Default under the Declaration. However, in
the event of payment defaults under, or acceleration of, Senior Indebtedness,
the subordination provisions of the Indenture will provide that no payments
may be made in respect of the New Junior Subordinated Debentures until such
Senior Indebtedness has been paid in full or any payment default thereunder
has been cured or waived. Failure to make required payments on New Junior
Subordinated Debentures would constitute an Event of Default under the
Declaration.
 
LIMITED PURPOSE OF THE TRUST
 
  The New Capital Securities will represent preferred beneficial interests in
the Trust, and the Trust exists for the sole purpose of issuing and selling
the Trust Securities, using the proceeds from the sale of the Trust Securities
to acquire the Junior Subordinated Debentures and engaging in only those
activities necessary, advisable or incidental thereto.
 
                                      69
<PAGE>
 
RIGHTS UPON TERMINATION
 
  Unless the New Junior Subordinated Debentures are distributed to holders of
the Trust Securities, upon any voluntary or involuntary termination and
liquidation of the Trust, the holders of the Trust Securities will be entitled
to receive, out of assets held by the Trust, the Liquidation Distribution in
cash. See "Description of New Capital Securities--Liquidation of the Trust and
Distribution of New Junior Subordinated Debentures." Upon any voluntary or
involuntary liquidation or bankruptcy of the Company, the Property Trustee, as
holder of the New Junior Subordinated Debentures, would be a subordinated
creditor of the Company, subordinated in right of payment to all Senior
Indebtedness as set forth in the Indenture, but entitled to receive payment in
full of principal (and premium, if any) and interest, before any stockholders
of the Company receive payments or distributions. Since the Company will be
the guarantor under the Guarantee and will agree to pay for all costs,
expenses and liabilities of the Trust (other than the Trust's obligations to
the holders of its Trust Securities), the positions of a holder of New Capital
Securities and a holder of New Junior Subordinated Debentures relative to
other creditors and to stockholders of the Company in the event of liquidation
or bankruptcy of the Company are expected to be substantially the same.
 
                   CERTAIN FEDERAL INCOME TAX CONSIDERATIONS
 
GENERAL
 
  In the opinion of Latham & Watkins, special counsel to the Company and the
Trust ("Tax Counsel"), the following is a summary of certain of the material
United States federal income tax consequences of the purchase, ownership and
disposition of Capital Securities held as capital assets by a holder. This
summary only addresses the tax consequences to a holder that acquired the Old
Capital Securities upon initial issuance at their original offering price. It
does not deal with special classes of holders such as banks, thrifts, real
estate investment trusts, regulated investment companies, insurance companies,
dealers in securities or currencies, tax-exempt investors, or persons that
will hold the Capital Securities as a position in a "straddle," as part of a
"synthetic security," "hedge," "conversion transaction" or other integrated
investment, or as other than a capital asset. This summary also does not
address the tax consequences to persons that have a functional currency other
than the U.S. Dollar or the tax consequences to shareholders, partners or
beneficiaries of a holder of Capital Securities. Further, it does not include
any description of any alternative minimum tax consequences or the tax laws of
any state or local government or of any foreign government that may be
applicable to the Capital Securities. This summary is based on the Internal
Revenue Code of 1986, as amended (the "Code"), Treasury regulations thereunder
and administrative and judicial interpretations thereof, as of the date
hereof, all of which are subject to change, possibly on a retroactive basis.
The opinion of Tax Counsel is based on current law, certain assumptions set
forth therein, certain representations from the Company and certain other
information, data, documentation and materials Tax Counsel deems necessary. An
opinion of counsel is not binding on the Internal Revenue Service (the "IRS")
and, therefore, no assurance can be given that such an opinion will not be
challenged by the IRS or would be sustained by a court if challenged.
 
EXCHANGE OF CAPITAL SECURITIES
 
  The exchange of Old Capital Securities for New Capital Securities will not
be a taxable event to holders for United States federal income tax purposes.
The exchange of Old Capital Securities for New Capital Securities pursuant to
the Exchange Offer will not be treated as an "exchange" for United States
federal income tax purposes because the New Capital Securities should not be
considered to differ materially in kind or extent from the Old Capital
Securities and because the exchange will occur by operation of the terms of
the Old Capital Securities. If, however, the exchange of the Old Capital
Securities for the New Capital Securities were treated as an exchange for
United States federal income tax purposes, such exchange would constitute a
recapitalization for federal income tax purposes. Accordingly, the New Capital
Securities will have the same adjusted tax basis and holding period in the New
Capital Securities as the holder had in the Old Capital Securities immediately
before the exchange.
 
                                      70
<PAGE>
 
CLASSIFICATION OF THE JUNIOR SUBORDINATED DEBENTURES
 
  In connection with the issuance of the Old Junior Subordinated Debentures,
Tax Counsel has rendered its opinion generally to the effect that under then
current law and assuming full compliance with the terms of the Indenture (and
certain other documents), and based on certain facts and assumptions contained
in such opinion, the Old Junior Subordinated Debentures will be classified for
United States federal income tax purposes as indebtedness of the Company.
 
CLASSIFICATION OF THE TRUST
 
  In connection with the issuance of the Old Capital Securities, Tax Counsel
rendered its opinion generally to the effect that, under then current law and
assuming full compliance with the terms of the Declaration and the Indenture
(and certain other documents), and based on certain facts and assumptions
contained in such opinion, the Trust will be classified for United States
federal income tax purposes as a grantor trust and not as a partnership or an
association taxable as a corporation. Accordingly, for United States federal
income tax purposes, each holder of Capital Securities generally will be
considered the owner of an undivided interest in the Junior Subordinated
Debentures, and each holder will be required to include in its gross income
any interest (or OID accrued) with respect to its allocable share of those
Junior Subordinated Debentures.
 
INTEREST INCOME AND ORIGINAL ISSUE DISCOUNT
 
  Under recently issued Treasury regulations (the "Regulations") applicable to
debt instruments issued on or after August 13, 1996, a "remote" contingency
that stated interest will not be timely paid will be ignored in determining
whether a debt instrument is issued with OID. The Company believes that the
likelihood of its exercising its option to defer payments of interest is
"remote" since, among other things, exercising that option would prevent the
Company from declaring dividends on any class of its equity securities.
Accordingly, the Company intends to take the position, based on the advice of
Tax Counsel, that the Junior Subordinated Debentures will not be considered to
be issued with OID and, accordingly, stated interest on the Junior
Subordinated Debentures generally will be taxable to a holder as ordinary
income at the time it is paid or accrued in accordance with such holder's
method of accounting.
 
  Under the Regulations, if the Company were to exercise its option to defer
payments of interest, the Junior Subordinated Debentures would at that time be
treated as issued with OID, and all stated interest on the Junior Subordinated
Debentures would thereafter be treated as OID as long as the Junior
Subordinated Debentures remain outstanding. In such event, all of a holder's
taxable interest income with respect to the Junior Subordinated Debentures
would thereafter be accounted for on an economic accrual basis regardless of
such holder's method of tax accounting, and actual distributions of stated
interest would not be reported as taxable income. The amount of OID that
accrues in any month will approximately equal the amount of interest that
accrues in that month at the stated interest rate. Consequently, a holder of
Capital Securities would be required to include in gross income OID even
though the Company would not make actual cash payments during an Extension
Period.
 
  The Regulations have not yet been addressed in any rulings or other
interpretations by the IRS, and it is possible that the IRS could take a
position contrary to Tax Counsel's interpretation herein.
 
  Because income on the Capital Securities will constitute interest or OID,
corporate holders of the Capital Securities will not be entitled to a
dividends-received deduction with respect to any income recognized with
respect to the Capital Securities.
 
RECEIPT OF JUNIOR SUBORDINATED DEBENTURES OR CASH UPON LIQUIDATION OF THE
TRUST
 
  The Company will have the right at any time to liquidate the Trust and cause
the Junior Subordinated Debentures to be distributed to the holders of the
Trust Securities. Under current law, such a distribution, for United States
federal income tax purposes, would be treated as a nontaxable event to each
holder, and each
 
                                      71
<PAGE>
 
holder would receive an aggregate tax basis in the Junior Subordinated
Debentures equal to such holder's aggregate tax basis in its Capital
Securities. A holder's holding period in the Junior Subordinated Debentures so
received in liquidation of the Trust would include the period during which the
Capital Securities were held by such holder. If, however, the Trust is
characterized for United States federal income tax purposes as an association
taxable as a corporation at the time of its dissolution, the distribution of
the Junior Subordinate Debentures may constitute a taxable event to holders of
Capital Securities.
 
  Under certain circumstances described herein (see "Description of New
Capital Securities"), the Junior Subordinated Debentures may be redeemed for
cash and the proceeds of such redemption distributed to holders in redemption
of their Capital Securities. Under current law, such a redemption would, for
United States federal income tax purposes, constitute a taxable disposition of
the redeemed Capital Securities, and a holder could recognize gain or loss as
if it sold such redeemed Capital Securities for cash. See "--Sales of Capital
Securities" below.
 
SALES OF CAPITAL SECURITIES
 
  A holder that sells Capital Securities (including a redemption of Capital
Securities either on the Stated Maturity Date or upon the occurrence of a
Special Event) will recognize gain or loss equal to the difference between its
adjusted tax basis in the Capital Securities and the amount realized on the
sale of such Capital Securities (for these purposes, the amount realized on
the sale of a Capital Security does not include any amount attributable to
accrued interest, which will be taxable on such unless previously taken into
account). A holder's adjusted tax basis in the Capital Securities generally
will be its initial purchase price increased by OID (if any) previously
includable in such holder's gross income to the date of disposition and
decreased by payments (other than stated interest that constitutes ordinary
income at the time it is paid or accrued) received on the Capital Securities.
Such gain or loss generally will be a capital gain or loss and generally will
be a long-term capital gain or loss if the Capital Securities have been held
for more than one year. Subject to certain limited exceptions, capital losses
cannot be applied to offset ordinary income for United States federal income
tax purposes.
 
UNITED STATES ALIEN HOLDERS
 
  For purposes of this discussion, a "United States Alien Holder" is any
corporation, individual, partnership, estate or trust that is treated as a
foreign corporation, a non-resident alien individual, a foreign partnership,
or a non-resident fiduciary of a foreign estate or a foreign trust under
United States federal income tax rules.
 
  Under present United States federal income tax law: (i) payments by the
Trust or any of its paying agents to any holder of a Capital Security who or
which is a United States Alien Holder will not be subject to United States
federal withholding tax; provided that, (a) the beneficial owner of the
Capital Security does not actually or constructively own 10 percent or more of
the total combined voting power of all classes of stock of the Company
entitled to vote, (b) the beneficial owner of the Capital Security is not a
controlled foreign corporation that is related to the Company through stock
ownership, within the meaning of the Code, and (c) either (A) the beneficial
owner of the Capital Security certifies to the Trust or its agent, under
penalties of perjury, that it is not a United States holder and provides its
name and address or (B) a securities clearing organization, bank or other
financial institution that holds customers' securities in the ordinary course
of its trade or business (a "Financial Institution"), and holds the Capital
Security in such capacity, certifies to the Trust or its agent, under
penalties of perjury, that such statement has been received from the
beneficial owner by it or by a Financial Institution between it and the
beneficial owner and furnishes the Trust or its agent with a copy thereof; and
(ii) a United States Alien Holder of a Capital Security generally will not be
subject to United States federal withholding tax on any gain realized upon the
sale or other disposition of a Capital Security.
 
PROPOSED TAX LEGISLATION
 
  On February 6, 1997, as part of President Clinton's Fiscal 1998 Budget
Proposal, the United States Treasury Department proposed legislation that
would, among other things, deny an issuer a deduction for United States
 
                                      72
<PAGE>
 
federal income tax purposes for the payment of interest on instruments with
characteristics similar to the Junior Subordinated Debentures. However, no
similar provision was contained in Chairman Archer's Mark submitted to the
Committee on Ways and Means on June 9, 1997. Even if the proposed legislation
were enacted in its current form, it is not expected to apply to the Junior
Subordinated Debentures since the proposed effective date for this provision
is the date of first committee action. There can be no assurances, however,
that the proposed legislation, if enacted, or similar legislation enacted
after the date hereof would not adversely affect the tax treatment of the
Junior Subordinated Debentures, resulting in a Tax Event. The occurrence of a
Tax Event may result in the redemption of the Junior Subordinated Debentures
for cash, in which event the holders of the Capital Securities would receive
cash in redemption of their Capital Securities. The occurrence of a Tax Event
may result in the redemption of the Junior Subordinated Debentures for cash,
in which event the holders of the Capital Securities would receive cash in
redemption of their Capital Securities. See "Description of New Capital
Securities--Redemption" and "Description of New Junior Subordinated
Debentures--Special Event Prepayment."
 
INFORMATION REPORTING TO HOLDERS
 
  Generally, income on the Capital Securities will be reported to holders on
Forms 1099, which forms should be mailed to holders of Capital Securities by
January 31 following each calendar year.
 
BACKUP WITHHOLDING
 
  Payments made on, and proceeds from the sale of, the Capital Securities may
be subject to a "backup" withholding tax of 31 percent unless the holder
complies with certain identification requirements. Any withheld amounts will
be allowed as a credit against the holder's United States federal income tax,
provided the required information is provided to the IRS.
 
  THE UNITED STATES FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS INCLUDED
FOR GENERAL INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A
HOLDER'S PARTICULAR SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH
RESPECT TO THE TAX CONSEQUENCES TO THEM OF THE PURCHASE, OWNERSHIP AND
DISPOSITION OF THE CAPITAL SECURITIES, INCLUDING THE TAX CONSEQUENCES UNDER
STATE, LOCAL, FOREIGN AND OTHER TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES
IN UNITED STATES FEDERAL OR OTHER TAX LAWS.
 
                             ERISA CONSIDERATIONS
 
  The Company, the obligor with respect to the New Junior Subordinated
Debentures held by the Trust, and its affiliates and the Property Trustee may
be considered a "party in interest" (within the meaning of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA")) or a
"disqualified person" (within the meaning of Section 4975 of the Code) with
respect to many employee benefit plans ("Plans") that are subject to ERISA.
The purchase and/or holding of New Capital Securities by a Plan that is
subject to the fiduciary responsibility provisions of ERISA or the prohibited
transaction provisions of Section 4975 of the Code (including individual
retirement arrangements and other plans described in Section 4975(e)(1) of the
Code) and with respect to which the Company, the Property Trustee or any
affiliate is a service provider (or otherwise is a party in interest or a
disqualified person) may constitute or result in a prohibited transaction
under ERISA or Section 4975 of the Code, unless such New Capital Securities
are acquired pursuant to and in accordance with an applicable exemption, such
as Prohibited Transaction Class Exemption ("PTCE") 84-14 (an exemption for
certain transactions determined by an independent qualified professional asset
manager), PTCE 91-38 (an exemption for certain transactions involving bank
collective investment funds), PTCE 90-1 (an exemption for certain transactions
involving insurance companies pooled separate accounts), PTCE 95-60 (an
exemption for transactions involving certain insurance company general
accounts) or PTCE 96-23 (an exception for certain transactions determined by
an in-house asset manager). In addition, a Plan fiduciary considering the
purchase of New Capital Securities should be aware that the assets of the
Trust may be considered "plan assets" for ERISA purposes. Therefore, a Plan
fiduciary should consider whether the acquisition of Capital Securities could
result
 
                                      73
<PAGE>
 
in a delegation of fiduciary authority to the Property Trustee, and, if so,
whether such a delegation of authority is permissible under the Plan's
governing instrument or any investment management agreement with the Plan. In
making such determination, a Plan fiduciary should note that the Property
Trustee is a U.S. bank qualified to be an investment manager (within the
meaning of section 3(38) of ERISA) to which such a delegation of authority
generally would be permissible under ERISA. Further, prior to an Event of
Default with respect to the New Junior Subordinated Debentures, the Property
Trustee will have only limited custodial and ministerial authority with
respect to Trust assets.
 
  Under the U.S. Department of Labor regulations defining "plan assets" for
ERISA purposes (the "Plan Assets Regulations"), the assets of the Trust will
be considered plan assets of Plans owning New Capital Securities unless the
aggregate investment in New Capital Securities by "benefit plan investors" is
not deemed "significant" or the New Capital Securities qualify as "publicly
offered securities" as defined in such Regulations. For this purpose, equity
participation by benefit plan investors will not be considered "significant"
on any date only if, immediately after the most recent acquisition of Capital
Securities, the aggregate interest in the New Capital Securities held by
benefit plan investors will be less than 25% of the value of the New Capital
Securities. Although it is possible that the equity participation by benefit
plan investors in New Capital Securities on any date will not be "significant"
for purposes of the Plan Assets Regulations, such result cannot be assured.
 
  The New Capital Securities may qualify as "publicly offered securities"
under the Plan Assets Regulations if at the time of the Exchange Offer they
are also "widely held" and "freely transferable." Under the Regulations, a
class of securities is "widely held" only if it is a class of securities that
is owned by 100 or more investors independent of the issuer and of one
another. Although it is possible that at the time of the Exchange Offer the
New Capital Securities will be "widely held," such result cannot be assured.
Whether a security is "freely transferable" for purposes of the Regulations is
a factual question to be determined on the basis of all relevant facts and
circumstances. If at the time of the Exchange Offer the New Capital Securities
qualify as "publicly offered securities," the assets of the Trust should not
be "plan assets" with respect to Plans acquiring New Capital Securities. If at
the time of the Exchange Offer the New Capital Securities do not qualify as
"publicly offered securities," the "plan asset" considerations discussed in
the preceding paragraphs could be applicable in connection with the investment
by Plans in the New Capital Securities.
 
  Any purchaser proposing to acquire Capital Securities with assets of any
Plan should consult with its ERISA counsel.
 
                             PLAN OF DISTRIBUTION
 
  Each broker-dealer that receives New Capital Securities for its own account
in connection with the Exchange Offer must acknowledge that it will deliver a
prospectus in connection with any resale of such New Capital Securities. This
Prospectus, as it may be amended or supplemented from time to time, may be
used by Participating Broker-Dealers during the period referred to below in
connection with resales of New Capital Securities received in exchange for Old
Capital Securities if such Old Capital Securities were acquired by such
Participating Broker-Dealers for their own accounts as a result of market-
making activities or other trading activities. The Company and the Trust have
agreed that this Prospectus, as it may be amended or supplemented from time to
time, may be used by a Participating Broker-Dealer in connection with resales
of such New Capital Securities for a period ending 90 days after the
Expiration Date (subject to extension under certain limited circumstances
described herein) or, if earlier, when all such New Capital Securities have
been disposed of by such Participating Broker-Dealer. However, a Participating
Broker-Dealer who intends to use this Prospectus in connection with the resale
of New Capital Securities received in exchange for Old Capital Securities
pursuant to the Exchange Offer must notify the Company or the Trust, or cause
the Company or the Trust to be notified, on or prior to the Expiration Date,
that it is a Participating Broker-Dealer. Such notice may be given in the
space provided for that purpose in the Letter of Transmittal or may be
delivered to the Exchange Agent at one of the addresses set forth herein under
"The Exchange Offer--Exchange Act." See "The Exchange Offer--Resales of New
Capital Securities."
 
                                      74
<PAGE>
 
  Neither the Company nor the Trust will receive any cash proceeds from the
issuance of the New Capital Securities offered hereby. New Capital Securities
received by broker-dealers for their own accounts in connection with the
Exchange Offer may be sold from time to time in one or more transactions in
the over-the-counter market, in negotiated transactions, through the writing
of options on the New Capital Securities or a combination of such methods of
resale, at market prices prevailing at the time of resale, at prices related
to such prevailing market prices or at negotiated prices. Any such resale may
be made directly to purchasers or to or through brokers or dealers who may
receive compensation in the form of commissions or concessions from any such
broker-dealer and/or the purchasers of any such New Capital Securities.
 
  Any broker-dealer that resells New Capital Securities that were received by
it for its own account in connection with the Exchange Offer and any broker or
dealer that participates in a distribution of such New Capital Securities may
be deemed to be an "underwriter" within the meaning of the Securities Act, and
any profit on any such resale of New Capital Securities and any commissions or
concessions received by any such persons may be deemed to be underwriting
compensation under the Securities Act. The Letter of Transmittal states that
by acknowledging that it will deliver and by delivering a prospectus a broker-
dealer will not be deemed to admit that it is an "underwriter" within the
meaning of the Securities Act.
 
                                 LEGAL MATTERS
 
  Certain matters of Delaware law relating to the validity of the New Capital
Securities will be passed upon on behalf of the Trust by Richards, Layton &
Finger, P.A., special Delaware counsel to the Company. The validity of the New
Junior Subordinated Debentures, the New Guarantee and certain matters relating
thereto will be passed upon on behalf of the Company by Ropes & Gray. Certain
United States federal income taxation matters will be passed upon for the
Company and the Trust by Latham & Watkins. Ropes & Gray will rely on Richards,
Layton & Finger, P.A. as to matters of Delaware law.
 
                                    EXPERTS
 
  The consolidated financial statements of the Company as of December 31, 1996
and 1995 and for each of the three years in the period ended December 31,
1996, incorporated in this Prospectus by reference to its Annual Report on
Form 10-K/A for the year ended December 31, 1996, have been so incorporated in
reliance on the report of Price Waterhouse LLP, independent accountants, given
on the authority of said firm as experts in auditing and accounting.
 
                                      75
<PAGE>
 
                                    PART II
 
                    INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
  AFC is a Delaware corporation. Section 102(b)(7) of the Delaware General
Corporation Law (the "DGCL") enables a corporation in its original certificate
of incorporation or an amendment thereto to eliminate or limit the personal
liability of a director to the corporation or its stockholders for monetary
damages for violations of the director's fiduciary duty, except (i) for any
breach of the director's duty of loyalty to the corporation or its
stockholders, (ii) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii) pursuant to
Section 174 of the DGCL (providing for liability of directors for unlawful
payment of dividends or unlawful stock purchases or redemptions) or (iv) for
any transaction from which a director derived an improper personal benefit.
The Certificate of Incorporation and By-Laws of AFC contain provisions
eliminating the liability of directors to the extent permitted by Section
102(b)(7) of the DGCL.
 
  Section 145 of the DGCL provides that a corporation may indemnify any person
who was or is a party or is threatened to be made a party to any threatened,
pending or completed action, suit or proceeding, whether civil, criminal or
investigative (other than an action by or in the right of the corporation) by
reason of the fact that he is or was a director, officer, employee or agent of
the corporation, or is or was serving at the request of the corporation as a
director, officer, employee or agent of another corporation, partnership,
joint venture, trust or other enterprise, against expenses (including
attorneys' fees), judgments, fines and amounts paid in settlement actually and
reasonably incurred by him in connection with such action, suit or proceeding
if he acted in good faith and in a manner he reasonably believed to be in or
not opposed to the best interests of the corporation, and, with respect to any
criminal action or proceeding, had no reasonable cause to believe his conduct
was unlawful. Section 145 further provides that a corporation similarly may
indemnify any such person serving in any such capacity who was or is a party
or is threatened to be made a party to any threatened, pending or completed
action or suit by or in the right of the corporation to procure a judgment in
its favor, against expenses actually and reasonably incurred in connection
with the defense or settlement of such action or suit if he acted in good
faith and in a manner he reasonably believed to be in or not opposed to the
best interests of the corporation and except that no indemnification shall be
made in respect of any claim, issue or matter as to which such person shall
have been adjudged to be liable to the corporation unless and only to the
extent that the Delaware Court of Chancery or such other court in which such
action or suit was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to indemnity for such expenses
which the Court of Chancery or such other court shall deem proper. The
Certificate of Incorporation of AFC provides for indemnification of each of
the Company's directors, officers and employees to the full extent permitted
by the DGCL.
 
  The Registrant and its subsidiaries and affiliates maintain various
directors' and officers' insurance policies.
 
                                     II-1
<PAGE>
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                               DESCRIPTION
 -------                              -----------
 <C>     <S>
  4.1    Indenture of Allmerica Financial Corporation relating to the Junior
         Subordinated Debentures.*
  4.2    Form of Certificate of New Junior Subordinated Debenture.
  4.3    Certificate of Trust of AFC Capital Trust I.
  4.4    Declaration of Trust of AFC Capital Trust I.
  4.5    Amended and Restated Declaration of Trust for AFC Capital Trust I.*
  4.6    Form of New Capital Security Certificate for AFC Capital Trust I.
  4.7    Form of New Guarantee of Allmerica Financial Corporation relating to
         the New Capital Securities.
  4.8    Registration Rights Agreement.*
  5.1    Opinion of Ropes & Gray as to legality of the New Junior Subordinated
         Debentures and the New Guarantee to be issued by Allmerica Financial
         Corporation.
  5.2    Opinion of Richards, Layton and Finger, P.A., special Delaware
         counsel, as to legality of the New Capital Securities to be issued by
         AFC Capital Trust I.
  8      Opinion of Latham & Watkins, special tax counsel, as to certain
         federal income tax matters.
 23.1    Consent of Price Waterhouse LLP.
 23.2    Consent of Ropes & Gray (included in Exhibit 5.1).
 23.3    Consent of Richards, Layton & Finger, P.A. (included in Exhibit 5.2).
 23.4    Consent of Latham & Watkins (included in Exhibit 8).
 24      Powers of Attorney of certain officers and directors of Allmerica
         Financial Corporation (included on the signature page of this
         Registration Statement).
 25.1    Form T-1 Statement of Eligibility of The Chase Manhattan Bank to act
         as trustee under the Indenture.
 25.2    Form T-1 Statement of Eligibility of The Chase Manhattan Bank to act
         as trustee under the Amended and Restated Declaration of Trust of AFC
         Capital Trust I.
 25.3    Form T-1 Statement of Eligibility of The Chase Manhattan Bank to act
         as Trustee under the New Guarantee for the benefit of the holders of
         New Capital Securities of AFC Capital Trust I.
 99.1    Form of Letter of Transmittal.
 99.2    Form of Notice of Guaranteed Delivery.
 99.3    Form of Exchange Agent Agreement.
</TABLE>
- --------
 * Incorporated by reference to Exhibits 3, 2 and 6, respectively, of the
   Company's Current Report on Form 8-K filed with the Commission on February
   5, 1997.
 
ITEM 22. UNDERTAKINGS
 
  The undersigned Registrant hereby undertakes:
 
  (1) To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:
 
    (i) To include any prospectus required by Section 10(a)(3) of the
  Securities Act of 1933.
 
    (ii) To reflect in the prospectus any facts or events arising after the
  effective date of the registration statement (or the most recent post-
  effective amendment thereof) which, individually or in the aggregate,
  represent a fundamental change in the information set forth in the
  registration statement; and
 
    (iii) To include any material information with respect to the plan of
  distribution not previously disclosed in the registration statement or any
  material change to such information in the registration statement;
 
                                     II-2
<PAGE>
 
Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if
the registration statement is on Form S-3 or Form S-8, and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed by the registrant pursuant to Section 13
or 15(d) of the Securities Exchange Act of 1934 that are incorporated by
reference in the registration statement.
 
  (2) That, for the purpose of determining any liability under the Securities
Act of 1933, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof.
 
  (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of
the offering.
 
  (4) That, for purposes of determining any liability under the Securities Act
of 1933, each filing of the Registrant's annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where
applicable, each filing of an employee benefit plan's annual report pursuant
to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated
by reference in the registration statement shall be deemed to be a new
registration statement relating to the securities offered therein and the
offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof.
 
  (5) That, prior to any public reoffering of the securities registered
hereunder through use of a prospectus which is a part of this Registration
Statement, by any person or party who is deemed to be an underwriter within
the meaning of Rule 145(c), such reoffering prospectus will contain the
information called for by the applicable registration form with respect to
reofferings by persons who may be deemed underwriters, in addition to the
information called for by the other items of the applicable form.
 
  (6) That, every prospectus (i) that is filed pursuant to paragraph (5)
immediately preceding, or (ii) that purports to meet the requirements of
section 10(a)(3) of the Securities Act of 1933 and is used in connection with
an offering of securities subject to Rule 415 thereunder, will be filed as a
part of an amendment to the registration statement and will not be used until
such amendment is effective, and that, for purposes of determining any
liability under the Securities Act of 1933, each such post-effective amendment
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.
 
  (7) To respond to requests for information that is incorporated by reference
into the prospectus pursuant to Item 4, 10(b), 11 or 13 of Form S-4, within
one business day of receipt of such request, and to send the incorporated
documents by first class mail or other equally prompt means. This includes
information contained in documents filed subsequent to the effective date of
the registration statement through the date of responding to the request.
 
  (8) To supply by means of a post-effective amendment all information
concerning a transaction, and the company being acquired involved therein,
that was not the subject of and included in the registration statement when it
became effective.
 
  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities
Act of 1933 and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act of 1933 and will be governed by the final adjudication of such
issue.
 
                                     II-3
<PAGE>
 
                                  SIGNATURES
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT
HAS DULY CAUSED THIS REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE
UNDERSIGNED, THEREUNTO DULY AUTHORIZED, IN THE CITY OF WORCESTER, COMMONWEALTH
OF MASSACHUSETTS, ON THE 16TH DAY OF JUNE, 1997
 
                                          Allmerica Financial Corporation
 
                                                    /s/ John F. O'Brien
                                          By __________________________________
                                               NAME: JOHN F. O'BRIEN
                                               TITLE: CHIEF EXECUTIVE OFFICER,
                                               PRESIDENT AND DIRECTOR
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS
REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE
CAPACITIES INDICATED ON JUNE 16, 1997.
 
  KNOW ALL MEN BY THESE PRESENTS that each officer and director of Allmerica
Financial Corporation whose signature appears below constitutes and appoints
John F. O'Brien, John F. Kelly and Edward J. Parry III and each of them, his
or her true and lawful attorney-in-fact and agent, with full power of
substitution and revocation, for him or her and in his or her name, place and
stead, in any and all capacities, to execute any and all amendments, or any
post-effective amendments and supplements to this Registration Statement, and
to file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorney-in-fact and agent full power and authority to do and perform each and
every act and thing requisite and necessary to be done, as fully to all
intents and purposes as he or she might or could do in person, hereby
ratifying and confirming all that said attorney-in-fact and agent, or his or
her substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.
 
              SIGNATURE                        TITLE
 
         /s/ John F. O'Brien           Chief Executive Officer, President
- -------------------------------------   and Director (Principal Executive
           JOHN F. O'BRIEN              Officer)
 
       /s/ Edward J. Parry III         Chief Financial Officer (Principal
- -------------------------------------   Financial and Accounting Officer)
         EDWARD J. PARRY III
 
       /s/ Michael P. Angelini         Director
- -------------------------------------
         MICHAEL P. ANGELINI
 
        /s/ David A. Barrett           Director
- -------------------------------------
          DAVID A. BARRETT
 
        /s/ Gail L. Harrison           Director
- -------------------------------------
          GAIL L. HARRISON
 
       /s/ Robert P. Henderson         Director
- -------------------------------------
         ROBERT P. HENDERSON
 
       /s/ J. Terrence Murray          Director
- -------------------------------------
         J. TERRENCE MURRAY
 
        /s/ Robert J. Murray           Director
- -------------------------------------
          ROBERT J. MURRAY
 
                                     II-4
<PAGE>
 
              SIGNATURE                         TITLE
 
         /s/ John L. Sprague            Director
- -------------------------------------
           JOHN L. SPRAGUE
 
       /s/ Robert G. Stachler           Director
- -------------------------------------
         ROBERT G. STACHLER
 
        /s/ Herbert M. Varnum           Director
- -------------------------------------
          HERBERT M. VARNUM
 
         /s/ Richard M. Wall            Director
- -------------------------------------
           RICHARD M. WALL
 
                                      II-5
<PAGE>
 
  Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Worcester, Commonwealth
of Massachusetts, on the 16th day of June, 1997.
 
                                          AFC CAPITAL TRUST I
 
                                          By  /s/ John P. Kavanaugh
                                            -----------------------------------
                                             John P. Kavanaugh, as
                                             Administrative Trustee
 
                                          By  /s/ John F. Kelly
                                            -----------------------------------
                                             John F. Kelly, as Administrative
                                             Trustee
 
                                          By  /s/ Edward J. Parry III
                                            -----------------------------------
                                             Edward J. Parry III, as
                                             Administrative Trustee
 
                                      II-6
<PAGE>
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                            DESCRIPTION                             PAGE
 -------                           -----------                             ----
 <C>     <S>                                                               <C>
   4.1   Indenture of Allmerica Financial Corporation relating to the
          Junior Subordinated Debentures.*
   4.2   Form of Certificate of New Junior Subordinated Debenture.
   4.3   Certificate of Trust of AFC Capital Trust I.
   4.4   Declaration of Trust of AFC Capital Trust I.
   4.5   Amended and Restated Declaration of Trust for AFC Capital Trust
          I.*
   4.6   Form of New Capital Security Certificate for AFC Capital Trust
          I.
   4.7   Form of New Guarantee of Allmerica Financial Corporation
          relating to the New Capital Securities.
   4.8   Registration Rights Agreement.*
   5.1   Opinion of Ropes & Gray as to legality of the New Junior
          Subordinated Debentures and the New Guarantee to be issued by
          Allmerica Financial Corporation.
   5.2   Opinion of Richards, Layton and Finger, P.A., special Delaware
          counsel, as to legality of the New Capital Securities to be
          issued by AFC Capital Trust I.
   8     Opinion of Latham & Watkins, special tax counsel, as to certain
          federal income tax matters.
  23.1   Consent of Price Waterhouse LLP.
  23.2   Consent of Ropes & Gray (included in Exhibit 5.1).
  23.3   Consent of Richards, Layton & Finger, P.A. (included in Exhibit
          5.2).
  23.4   Consent of Latham & Watkins (included in Exhibit 8).
  24     Powers of Attorney of certain officers and directors of
          Allmerica Financial Corporation (included on the signature
          page of this Registration Statement).
  25.1   Form T-1 Statement of Eligibility of The Chase Manhattan Bank
          to act as trustee under the Indenture.
  25.2   Form T-1 Statement of Eligibility of The Chase Manhattan Bank
          to act as trustee under the Amended and Restated Declaration
          of Trust of AFC Capital Trust I.
  25.3   Form T-1 Statement of Eligibility of The Chase Manhattan Bank
          to act as Trustee under the New Guarantee for the benefit of
          the holders of New Capital Securities of AFC Capital Trust I.
  99.1   Form of Letter of Transmittal.
  99.2   Form of Notice of Guaranteed Delivery.
  99.3   Form of Exchange Agent Agreement.
</TABLE>
- --------
 * Incorporated by reference to Exhibits 3, 2 and 6, respectively, of the
   Company's Current Report on Form 8-K filed with the Commission on February
   5, 1997.

<PAGE>
 
                                                                     Exhibit 4.2

                    [FORM OF JUNIOR SUBORDINATED DEBENTURE]

                           [FORM OF FACE OF SECURITY]

              [IF THE SECURITY IS A GLOBAL SECURITY, INSERT: THIS SECURITY IS A
GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND
IS REGISTERED IN THE NAME A DEPOSITARY OR A NOMINEE OF A DEPOSITARY. THIS
SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER
THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED
IN THE INDENTURE, AND NO TRANSFER OF THIS SECURITY (OTHER THAN A TRANSFER OF
THIS CAPITAL SECURITY AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE
DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER
NOMINEE OF THE DEPOSITARY) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES.

              UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC") TO THE ISSUER OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREON IS MADE
TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL IN AS MUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]


No. ______                                                     CUSIP No. _______

                         ALLMERICA FINANCIAL CORPORATION

     8.207% SERIES B JUNIOR SUBORDINATED DEFERRABLE INTEREST DEBENTURE DUE
February 3, 2027

              Allmerica Financial Corporation, a Delaware corporation (the
"Company", which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
____________, or registered assigns, the principal sum of ____________ on
February 3, 2027 (the "Maturity Date"), unless previously redeemed, and to pay
interest on the outstanding principal amount hereof from February 3, 1997, or
from the most recent interest payment date (each such date, an "Interest Payment
Date") to which interest has been paid or duly provided for, semi-annually
(subject to deferral as set forth herein) in arrears on February 15 and August
15 of each year, commencing
<PAGE>
 
August 15, 1997 at the rate of 8.207% per annum until the principal hereof shall
have become due and payable, and at the same rate per annum on any overdue
principal and premium, if any, and (without duplication and to the extent that
payment of such interest is enforceable under applicable law) on any overdue
installment of interest at the same rate per annum compounded semi-annually. The
amount of interest payable on any Interest Payment Date shall be computed on the
basis of a 360-day year of twelve 30-day months and, for any period less than a
full calendar month, the actual number of days elapsed in such month. In the
event that any date on which the principal of (or premium, if any) or interest
on this Security is payable is not a Business Day, then the payment payable on
such date will be made on the next succeeding day that is a Business Day (and
without any interest or other payment in respect of any such delay), with the
same force and effect as if made on such date. Pursuant to the Registration
Rights Agreement, in certain limited circumstances the Company will be required
to pay Liquidated Damages (as defined in the Registration Rights Agreement) with
respect to this Security.

                  The interest installment so payable, and punctually paid or
duly provided for, on any Interest Payment Date will, as provided in the
Indenture, be paid to the person in whose name this Security (or one or more
Predecessor Securities, as defined in said Indenture) is registered at the close
of business on the regular record date for such interest installment, which
shall be the first day of the month in which the relevant interest payment date
falls. Any such interest installment not punctually paid or duly provided for
shall forthwith cease to be payable to the holders on such regular record date
and may be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on a special
record date to be fixed by the Trustee for the payment of such defaulted
interest, notice whereof shall be given to the holders of Securities not less
than 10 days prior to such special record date, or may be paid at any time in
any other lawful manner not inconsistent with the requirements of any securities
exchange on which the Securities may be listed, and upon such notice as may be
required by such exchange, all as more fully provided in the Indenture.

                  The principal of (and premium, if any) and interest on this
Security shall be payable at the office or agency of the Trustee maintained for
that purpose in any coin or currency of the United States of America that at the
time of payment is legal tender for payment of public and private debts;
provided, however, that, payment of interest may be made at the option of the
Company by (i) check mailed to the holder at such address as shall appear in the
Security Register or (ii) by transfer to an account maintained by the Person
entitled thereto, provided that proper written transfer instructions have been
received by the relevant record date. Notwithstanding the foregoing, so long as
the Holder of this Security is the Property Trustee, the payment of the
principal of (and premium, if any) and interest on this Security will be made at
such place and to such account as may be designated by the Property Trustee.

                  The indebtedness evidenced by this Security is, to the extent
provided in the Indenture, subordinate and junior in right of payment to the
prior payment in full of Senior Indebtedness, and this Security is issued
subject to the provisions of the Indenture with respect
<PAGE>
 
thereto. Each holder of this Security, by accepting the same, (a) agrees to and
shall be bound by such provisions, (b) authorizes and directs the Trustee on his
or her behalf to take such action as may be necessary or appropriate to
acknowledge or effectuate the subordination so provided and (c) appoints the
Trustee his or her attorney-in-fact for any and all such purposes. Each holder
hereof, by his or her acceptance hereof, hereby waives all notice of the
acceptance of the subordination provisions contained herein and in the Indenture
by each holder of Senior Indebtedness, whether now out standing or hereafter
incurred, and waives reliance by each such holder upon said provisions.

                  This Security shall not be entitled to any benefit under the
Indenture hereinafter referred to, or be valid or become obligatory for any
purpose until the Certificate of Authentication hereon shall have been signed by
or on behalf of the Trustee.

                  The provisions of this Security are continued on the following
pages hereto and such provisions shall for all purposes have the same effect as
though fully set forth at this place.

                  IN WITNESS WHEREOF, the Company has caused this instrument to
be executed.

                                   ALLMERICA FINANCIAL CORPORATION

                                   By: 
                                      ------------------------------------------
                                      Name:
                                      Title

Attest:

By: 
    ---------------------------
    Name:
    Title:


                          CERTIFICATE OF AUTHENTICATION

         This is one of the Securities referred to in the within-mentioned
Indenture.

Dated
     --------------------------

THE CHASE MANHATTAN BANK,
  as Trustee


By: 
   ----------------------------
   Authorized Officer
<PAGE>
 
         This Security is one of the Securities of the Company (herein sometimes
referred to as the "Securities"), specified in the Indenture, all issued or to
be issued under and pursuant to an Indenture, dated as of February 3, 1997 (the
"Indenture"), duly executed and delivered between the Company and The Chase
Manhattan Bank, as Trustee (the "Trustee"), to which Indenture reference is
hereby made for a description of the rights, limitations of rights, obligations,
duties and immunities thereunder of the Trustee, the Company and the holders of
the Securities.

         Upon the occurrence and continuation of a Special Event, the Company
shall have the right at any time, within 90 days following the occurrence of a
Special Event, to redeem this Security in whole (but not in part) at the Special
Event Redemption Price. "Special Event Redemption Price" shall mean, with
respect to any redemption of the Securities following a Special Event, an amount
in cash equal to the greater of (i) 100% of the principal amount to be redeemed,
or (ii) the sum, as determined by a Quotation Agent, of the present values of
the principal amount of such Securities, together with scheduled payments of
interest from the redemption date to the Maturity Date, in each case discounted
to the prepayment date on a semi-annual basis (assuming a 350-day year of twelve
30-day months) at the Adjusted Treasury Rate, plus, in each case, any accrued
and unpaid interest thereon, including Compounded Interest and Additional
Interest, if any, to the date of such redemption.

         Notwithstanding the foregoing, any redemption of Securities by the
Company shall be subject to the receipt by the Company of any required
regulatory approval.

         In case an Event of Default, as defined in the Indenture, shall have
occurred and be continuing, the principal of all of the Securities may be
declared, and upon such declaration shall become, due and payable, in the
manner, with the effect and subject to the conditions provided in the Indenture.

         The Indenture contains provisions permitting the Company and the
Trustee, with the consent of the holders of a majority in aggregate principal
amount of the Securities at the time outstanding, as defined in the Indenture,
to execute supplemental indentures for the purpose of adding any provisions to
or changing in any manner or eliminating any of the provisions of the Indenture
or of modifying in any manner the rights of the holders of the Securities;
provided, however, that no such supplemental indenture shall, without the
consent of each holder of Securities then outstanding and affected thereby, (i)
extend the Maturity Date of any Securities, or reduce the principal amount
thereof, or reduce any amount payable on redemption thereof, or reduce the rate
or extend the time of payment of interest thereon (subject to Article XVI of the
Indenture), or make the principal of, or interest or premium on, the Securities
payable in any coin or currency other than U.S. dollars, or impair or affect the
right of any holder of Securities to institute suit for the payment thereof, or
(ii) reduce the aforesaid percentage of Securities, the holders of which are
required to consent to any such supplemental indenture. The Indenture also
contains provisions permitting the holders of a majority in aggregate principal
amount of the Securities at the time outstanding, on behalf of
<PAGE>
 
all of the holders of the Securities, to waive any past default in the
performance of any of the covenants contained in the Indenture, or established
pursuant to the Indenture, and its consequences, except a default in the payment
of the principal of or premium, if any, or interest on any of the Securities or
a default in respect of any covenant or provision under which the Indenture
cannot be modified or amended without the consent of each holder of Securities
then outstanding. Any such consent or waiver by the holder of this Security
(unless revoked as provided in the Indenture) shall be conclusive and binding
upon such Holder and upon all future holders and owners of this Security and of
any Security issued in exchange hereford or in place hereof (whether by
registration of transfer or otherwise), irrespective of whether or not any
notation of such consent or waiver is made upon this Security.

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal of and premium, if any, and
interest on this Security at the time and place and at the rate and in the money
herein prescribed.

         The Company shall have the right, at any time and from time to time
during the term of the Securities, to defer payments of interest by extending
the interest payment period of such Securities for a period not exceeding 10
consecutive semi-annual periods, including the first such semi-annual period
during such extension period, and not to extend beyond the Maturity Date of the
Securities (an "Extended Interest Payment Period"), at the end of which period
the Company shall pay all interest then accrued and unpaid (together with
interest thereon at the rate specified for the Securities to the extent that
payment of such interest is enforceable under applicable law). Before the
termination of any such Extended Interest Payment Period, the Company may
further defer payments of interest by further extending such Extended Interest
Payment Period, provided that such Extended Interest Payment Period, together
with all such previous and further extensions within such Extended Interest
Payment Period, shall not exceed 10 consecutive semi-annual periods, including
the first semi-annual period during such Extended Interest Payment Period, shall
not end on any date other than an Interest Payment Date or extend beyond the
Maturity Date of the Securities. Upon the termination of any such Extended
Interest Payment Period and the payment of all accrued and unpaid interest and
any additional amounts then due, the Company may commence a new Extended
Interest Payment Period, subject to the foregoing requirements.

         The Company has agreed that it will not (i) declare or pay any
dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of the Company's capital stock (which
includes common and preferred stock) or (ii) make any payment of principal,
interest or premium, if any, on or repay or repurchase or redeem any debt
securities of the Company that rank pari passu with or junior in right of
payment to the Securities or (iii) make any guarantee payments with respect to
any guarantee by the Company of any securities or any Subsidiary of the Company
(including Other Guarantees) if such guarantee ranks pari passu or junior in
right of payment to the Securities (other than (a) dividends or distributions in
shares of, or options, warrants or rights to subscribe for or purchase shares
of, Common Stock of the Company; (b) any declaration of a dividend in
<PAGE>
 
connection with the implementation of a stockholder's rights plan, or the
issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto; (c) payments under the Capital
Securities Guarantee; (d) as a direct result of, and only to the extent required
in order to avoid the issuance of fractional shares of capital stock following,
a reclassification of the Company's capital stock or the exchange or the
conversion of one class or series of the Company's capital stock for another
class or series of the Company's capital stock or pursuant to an acquisition in
which the fractional shares of the Company's capital stock would otherwise be
issued; (e) the purchase of fractional interests in shares of the Company's
capital stock pursuant to the exchange or conversion of such capital stock or
the security being exchanged or converted and (f) purchases of Common Stock
related to the issuance of Common Stock or rights under any benefit plan for
directors, officers, agents or employees of the Company or its Subsidiaries or
any of the Company's dividend reinvestment or director, officer, agent or
employee stock purchase plans) if at such time (1) an Event of Default shall
have occurred and be continuing, or would occur upon the taking of any action
specified in clauses (i) through (iii) above, (2) there shall have occurred any
event of which the Company has actual knowledge that (a) with the giving of
notice or the lapse of time, or both, would be an Event of Default and (b) in
respect of which the Company shall not have taken reasonable steps to cure, (3)
the Company shall be in default with respect to its payment obligations under
the Capital Securities Guarantee or (4) the Company shall have given notice of
its election of the exercise of its right to extend the interest payment period
under the Indenture (or notice of a valid extension of an interest payment
period in accordance with the terms of any Other Debentures) and any such
extension shall not have been rescinded or such Extended Interest Payment
Period, or any extension thereof, or extension period with respect to Other
Debentures, shall be continuing.

         The Securities are issuable only in registered form without coupons in
denominations of $1,000.00 and any integral multiple thereof. As provided in the
Indenture and subject to the transfer restrictions limitations as may be
contained herein and therein from time to time, this Security is transferable by
the holder hereof on the Security Register of the Company, upon surrender of
this Security for registration of transfer at the office or agency of the
Company in the City and State of New York accompanied by a written instrument or
instruments of transfer in form satisfactory to the Company and the Security
registrar duly executed by the holder hereof or his attorney duly authorized in
writing, and thereupon one or more new Securities of authorized denominations
and for the same aggregate principal amount and series will be issued to the
designated transferee or transferees. No service charge will be made for any
such transfer, but the Company may require payment of a sum sufficient to cover
any tax or other governmental charge payable in relation thereto.

         Prior to due presentment for registration of transfer of this Security,
the Company, the Trustee, any authenticating agent, any paying agent, any
transfer agent and the registrar may deem and treat the holder hereof as the
absolute owner hereof (whether or not this Security shall be overdue and
notwithstanding any notice of ownership or writing hereon made by anyone other
than the Security Registrar) for the purpose of receiving payment of or on
account of the principal hereof and premium, if any, and (subject to the
Indenture) interest due hereon and for all other purposes, and neither the
Company nor the Trustee nor any
<PAGE>
 
authenticating agent nor any paying agent nor any transfer agent nor any
registrar shall be affected by any notice to the contrary.

         No recourse shall be had for the payment of the principal of or
premium, if any, or interest on this Security, or for any claim based hereon, or
otherwise in respect hereof, or based on or in respect of the Indenture, against
any incorporator, stockholder, officer or director, past, present or future, as
such, of the Company or of any predecessor or successor Person, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of any
assessment or penalty or otherwise, all such liability being, by the acceptance
hereof and as part of the consideration for the issuance hereof, expressly
waived and released.

         All terms used in this Security that are defined in the Indenture shall
have the meanings assigned to them in the Indenture.

         THE INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICT OF
LAW PROVISIONS THEREOF.

<PAGE>
 
                                                                    Exhibit 4.3



                             CERTIFICATE OF TRUST

                                      OF

                              AFC CAPITAL TRUST I

         This Certificate of Trust of AFC Capital Trust I (the "Trust"), dated
January 24, 1997, is being duly executed and filed by the undersigned, as
trustees, to form a business trust under the Delaware Business Trust Act (12
Del. C. Section 3801 et seq.).

               (a)   Name.  The name of the business trust being formed hereby
is AFC Capital Trust I.

               (b)   Delaware Trustee.  The name and business address of the
trustee of the Trust with a principal place of business in the State of Delaware
is Chase Manhattan Bank Delaware, 1201 Market Street, Wilmington, Delaware
19801.

               (c)   Effective Date.  This Certificate of Trust shall be
effective as of its filing.

         IN WITNESS WHEREOF, the undersigned, being the trustees of the Trust,
have executed this Certificate of Trust as of the date first above written.

                                        CHASE MANHATTAN BANK DELAWARE,
                                        as Trustee


                                        By: /s/ John J. Cashin
                                           -------------------------
                                           Name:   John J. Cashin
                                           Title:  Senior Trust Officer

                                            /s/ John F. Kelly
                                           -------------------------
                                           John F. Kelly, as Trustee


                                            /s/ Edward J. Parry III
                                           -------------------------
                                           Edward J. Parry III, as Trustee

<PAGE>
 
                                                                     Exhibit 4.4


                              DECLARATION OF TRUST
                                       OF
                               AFC CAPITAL TRUST I


         This DECLARATION OF TRUST, dated as of January 24, 1997, between
Allmerica Financial Corporation, a Delaware corporation, as "Sponsor" and Edward
J. Parry III and John F. Kelly as "Administrative Trustees" and Chase Manhattan
Bank Delaware as "Delaware Trustee" (the Delaware Trustee and the Administrative
Trustees together, the "Trustees"). The Sponsor and the Trustees hereby agree as
follows:

         1. The trust created hereby shall be known as AFC Capital Trust I (the
"Trust"), in which name the Trustees, or the Sponsor to the extent provided
herein, may conduct the business of the Trust, make and execute contracts, and
sue and be sued.

         2. The Sponsor hereby assigns, transfers, conveys and sets over to the
Trustees the sum of $10. The Trustees hereby acknowledge receipt of such amount
in trust from the Sponsor, which amount shall constitute the initial trust
estate. The Trustees hereby declare that they will hold the trust estate in
trust for the Sponsor. It is the intention of the parties hereto that the Trust
created hereby constitute a business trust under Chapter 38 of Title 12 of the
Delaware Code, 12 Del. C. (S) 3801 et seq. (the "Business Trust Act"), and that
this document constitutes the governing instrument of the Trust. The Trustees
are hereby authorized and directed to execute and file a certificate of trust
with the Secretary of State of the State of Delaware in accordance with the
provisions of the Business Trust Act.

         3. The Sponsor, the Trustees and certain other parties, will enter into
an Amended and Restated Declaration of Trust, satisfactory to each such party
and having substantially the terms described in the Offering Circular (as
defined below), to provide for the contemplated operation of the Trust created
hereby and the issuance of the Capital Securities and Common Securities referred
to therein. Prior to the execution and delivery of such Amended and Restated
Declaration of Trust, the Trustees shall not have any duty or obligation
hereunder or with respect to the trust estate, except as otherwise required by
applicable law or as may be necessary to obtain prior to such execution and
delivery any licenses, consents or approvals required by applicable law or
otherwise.

         4. The Sponsor and the Trustees hereby authorize and direct the
Sponsor, as the sponsor of the Trust, (i) to prepare and distribute one or more
offering circulars on behalf of the Trust, including the offering circular dated
January 24, 1997, including any necessary or desirable amendments thereto
(including any exhibits contained therein or forming a part thereof) (the
"Offering Circular"), relating to the Capital Securities and Common Securities
of
<PAGE>
 
the Trust and certain other securities; (ii) to file with the Private Offering,
Resales and Trading through Automatic Linkages (PORTAL) Market ("PORTAL") and
execute on behalf of the Trust a listing application or applications and all
other applications, statements, certificates, agreements and other instruments
as shall be necessary or desirable to cause the Capital Securities to be listed
on PORTAL; (iii) to file and execute on behalf of the Trust such applications,
reports, surety bonds, irrevocable consents, appointments of attorney for
service of process and other papers and documents as the Sponsor, on behalf of
the Trust, may deem necessary or desirable to qualify or register the Capital
Securities under, or obtain for the Capital Securities an exemption from, the
securities or "Blue Sky" laws in such jurisdictions as the Sponsor may
determine; (iv) to execute on behalf of the Trust such underwriting or purchase
agreements with one or more underwriters, purchasers or agents relating to the
offering of the Capital Securities as the Sponsor, on behalf of the Trust, may
deem necessary or desirable; (v) to execute on behalf of the Trust any and all
documents, papers and instruments as may be desirable in connection with any of
the foregoing; (vi) to employ or otherwise engage employees and agents (who may
be designated as officers with titles) and managers, contractors, advisors, and
consultants and provide for reasonable compensation for such services; (vii) to
incur expenses which are necessary or incidental to carry out any of the
purposes of the Trust. If any filing referred to in clauses (i), (ii) and (iii)
above is required by law or by the rules and regulations of applicable
governmental agency, self-regulatory organization or other person or
organization to be executed on behalf of the Trust by one of the Trustees, the
Sponsor and any of the Trustees appointed pursuant to Section 6 hereof are
hereby authorized to join in any such filing and to execute on behalf of the
Trust any and all of the foregoing.

         5. This Declaration of Trust may be executed in one or more
counterparts.

         6. The number of Trustees initially shall be three (3) and thereafter
the number of Trustees shall be such number as shall be fixed from time to time
by a written instrument signed by the Sponsor which may increase or decrease the
number of Trustees; provided, however, that to the extent required by the
Business Trust Act, one Trustee shall either be a natural person who is a
resident of the State of Delaware or, if not a natural person, an entity which
has its principal place of business in the State of Delaware and otherwise meets
the requirements of applicable Delaware law. Subject to the foregoing, the
Sponsor is entitled to appoint or remove without cause any of the Trustees at
any time. Any of the Trustees may resign upon thirty days' prior notice to the
Sponsor provided, however, such notice shall not be required if it is waived by
        --------  -------
the Sponsor. Except as expressly set forth in this Declaration, any power of the
Trustees may be exercised by, or with the consent of, any one Administrative
Trustee.

         7. The recitals contained in this Declaration of Trust shall be taken
as statements of the Sponsor, and the Trustees do not assume any responsibility
for their correctness. The Trustees make no representations as to the value or
condition of the property of the Trust or
<PAGE>
 
any part thereof. The Trustees make no representations as to the validity or
sufficiency of this Declaration of Trust.

         8. (a) The Delaware Trustee shall not be liable, responsible or
accountable for damages or otherwise to the Trust, the Sponsor, the other
Trustees or any holder of the Capital Securities for any loss, damage or claim
incurred by reason of any act or omission performed or omitted by the Delaware
Trustee in good faith on behalf of the Trust and in a manner the Delaware
Trustee reasonably believed to be within the scope of authority conferred on the
Delaware Trustee by this Declaration or by law, except that the Delaware Trustee
shall be liable for any such loss, damage or claim incurred by reason of the
Delaware Trustee's gross negligence or willful misconduct with respect to such
acts or omissions.

         (b) The Delaware Trustee shall be fully protected in relying in good
faith upon the records of the Trust and upon such information, opinions, reports
or statements presented to the Trust by any person as to matters the Delaware
Trustee reasonably believes are within such other person's professional or
expert competence and who has been selected with reasonable care by or on behalf
of the Trust, including information, opinions, reports or statements as to the
value and amount of the assets, liabilities, profits, losses, or any other facts
pertinent to the existence and amount of assets from which distributions to
holders of Capital Securities might properly be paid.

         9. The Sponsor agrees, to the fullest extent permitted by applicable
law:

         (a) to indemnify and hold harmless the Delaware Trustee, or any of its
officers, directors, shareholders, employees, representatives or agents, from
and against any loss, damage, liability, tax, penalty, expense or claim of any
kind or nature whatsoever incurred by reason of the creation, operation or
termination of the Trust or any act or omission performed or omitted by the
Delaware Trustee in good faith on behalf of the Trust in a manner reasonably
believed to be within the scope of authority conferred on the Delaware Trustee
by this Declaration of Trust, except that the Delaware Trustee shall not be
entitled to be indemnified in respect of any loss, damage or claim incurred by
reason of its gross negligence or willful misconduct with respect to such acts
or omissions; and

         (b) to advance expenses (including the fees and expenses of counsel)
incurred by the Delaware Trustee in defending any claim, demand, action, suit or
proceeding from time to time, prior to the final disposition of such claim,
demand, action suit or proceeding.

         10. The provisions of Section 9 shall survive the termination of this
Declaration of Trust or the earlier resignation or removal of the Delaware
Trustee.

         11. The Trust may terminate without issuing any Capital Securities at
the election of the Sponsor.


                                      -3-
<PAGE>
 
         12. Chase Manhattan Bank Delaware, in its capacity as Delaware Trustee,
shall not have any of the powers or duties of the Trustees set forth herein and
shall be a Trustee of the Trust for the sole purpose of satisfying the
requirements of Section 3807 of the Business Trust Act.

         13. This Declaration of Trust shall be governed by, and construed in
accordance with, the laws of the State of Delaware (without regard to conflict
of laws principles).





                                      -4-
<PAGE>
 
                  IN WITNESS WHEREOF, the parties hereto have caused this
Declaration of Trust to be duly executed as of the day and year first above
written.

                              ALLMERICA FINANCIAL CORPORATION,
                              as Sponsor


                              By:    /s/  Edward J. Parry III
                                 ---------------------------------
                                 Name:  Edward J. Parry III
                                 Title: Vice President, Chief Financial Officer
                                        and Treasurer


                              CHASE MANHATTAN BANK DELAWARE
                              as Trustee


                              By:    /s/  John J. Cashin
                                 --------------------------------
                                 Name:  John J. Cashin
                                 Title:   Senior Trust Officer



                                     /s/   John F. Kelly
                                 -------------------------------- 
                                 as Regular Trustee



                                     /s/  Edward J. Parry III
                                 --------------------------------
                                 as Regular Trustee




                                      -5-

<PAGE>
 
                                                                     Exhibit 4.6

                    [FORM OF CAPITAL SECURITY CERTIFICATE]

                           [FORM OF FACE OF SECURITY]

                  [IF THIS CAPITAL SECURITY IS A GLOBAL CAPITAL SECURITY,
INSERT: THIS CAPITAL SECURITY IS A GLOBAL CAPITAL SECURITY WITHIN THE MEANING OF
THE DECLARATION HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE
DEPOSITORY TRUST COMPANY (THE "CLEARING AGENCY") OR A NOMINEE OF THE CLEARING
AGENCY. THIS CAPITAL SECURITY IS EXCHANGEABLE FOR CAPITAL SECURITIES REGISTERED
IN THE NAME OF A PERSON OTHER THAN THE CLEARING AGENCY OR ITS NOMINEE ONLY IN
THE LIMITED CIRCUMSTANCES DESCRIBED IN THE DECLARATION AND NO TRANSFER OF THIS
CAPITAL SECURITY (OTHER THAN A TRANSFER OF THIS CAPITAL SECURITY AS A WHOLE BY
THE CLEARING AGENCY TO A NOMINEE OF THE CLEARING AGENCY OR BY A NOMINEE OF THE
CLEARING AGENCY TO THE CLEARING AGENCY OR ANOTHER NOMINEE OF THE CLEARING
AGENCY) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES.

                  UNLESS THIS CAPITAL SECURITY IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW
YORK) TO THE TRUST OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY CAPITAL SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO.
OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY
TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS
WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]
<PAGE>
 
Certificate Number                              Aggregate Liquidation Amount
                                         of Capital Securities: $300,000,000

                                                        CUSIP NO. __________


                    Certificate Evidencing Capital Securities

                                       of

                               AFC Capital Trust I


                       8.207% Series B Capital Securities
                (liquidation amount $1,000 per Capital Security)

                  AFC Capital Trust I, a statutory business trust created under
the laws of the State of Delaware (the "Trust"), hereby certifies that
______________ (the "Holder") is the registered owner of [$__________ in
aggregate liquidation amount of Capital Securities of the Trust]* [the aggregate
liquidation amount of Capital Securities of the Trust specified in Schedule A
hereto.]** representing undivided beneficial interests in the assets of the
Trust designated the 8.207% Series B Capital Securities (liquidation amount
$1,000 per Capital Security) (the "Capital Securities"). Subject to the
Declaration (as defined below), the Capital Securities are transferable on the
books and records of the Trust, in person or by a duly authorized attorney, upon
surrender of this certificate duly endorsed and in proper form for transfer. The
designation, rights, privileges, restrictions, preferences and other terms and
provisions of the Capital Securities represented hereby are issued and shall in
all respects be subject to the provisions of the Amended and Restated
Declaration of Trust of the Trust dated as of February 3, 1997, as the same may
be amended from time to time (the "Declaration"), including the designation of
the terms of the Capital Securities as set forth in Annex I to the Declaration.
Capitalized terms used but not defined herein shall have the meaning given them
in the Declaration. The Sponsor will provide a copy of the Declaration, the
Capital Securities Guarantee and the Indenture to a Holder without charge upon
written request to the Trust at its principal place of business.

                  Upon receipt of this certificate, the Holder is bound by the
Declaration and is entitled to the benefits thereunder and to the benefits of
the Capital Securities Guarantee to the extent provided therein.


- ---------------------------
*        Insert in Definitive Capital Securities only.
**       Insert in Global Capital Securities only.

                                       -2-
<PAGE>
 
                  By acceptance, the Holder agrees to treat, for United States
federal income tax purposes, the Debentures as indebtedness and the Capital
Securities as evidence of indirect beneficial ownership in the Debentures.


                  IN WITNESS WHEREOF, the Trust has executed this certificate
this ____ day of __________, ____.


                                      AFC CAPITAL TRUST I


                                      By:
                                         --------------------------------
                                       Name:
                                       Administrative Trustee


                  PROPERTY TRUSTEE'S CERTIFICATE OF AUTHENTICATION

                  This is one of the Capital Securities referred to in the
within-mentioned Declaration.

Dated:                  ,

                                      THE CHASE MANHATTAN BANK
                                      as Property Trustee


                                      By:
                                         --------------------------------
                                        Name:
                                        Authorized Officer

                                      -3-
<PAGE>
 
                          [FORM OF REVERSE OF SECURITY]

                  Distributions payable on each Capital Security will be fixed
at a rate per annum of 8.207% (the "Coupon Rate") of the liquidation amount of
$1,000 per Capital Security, such rate being the rate of interest payable on the
Debentures to be held by the Property Trustee. Except for Distributions which
are deferred as provided below, Distributions in arrears for more than one
semi-annual period will bear interest thereon compounded semi-annually at the
Coupon Rate (to the extent permitted by applicable law). Pursuant to the
Registration Rights Agreement, in certain limited circumstances the Debenture
Issuer will be required to pay Liquidated Damages (as defined in the
Registration Rights Agreement) with respect to the Debentures. The term
"Distributions", as used herein, includes such cash distributions and any such
interest and such Liquidated Damages payable unless otherwise stated. A
Distribution is payable only to the extent that payments are made in respect of
the Debentures held by the Property Trustee and to the extent the Property
Trustee has funds on hand legally available therefor.

                  Distributions on the Capital Securities will be cumulative,
will accumulate from the most recent date to which Distributions have been paid
or duly provided for or, if no Distributions have been paid or duly provided
for, from February 3, 1997 and will be payable semi-annually in arrears, on
February 15 and August 15 of each year, commencing on August 15, 1997, except as
otherwise described below. Distributions will be computed on the basis of a
360-day year consisting of twelve 30-day months and, for any period less than a
full calendar month, the number of days elapsed in such month. As long as no
Event of Default has occurred and is continuing under the Indenture, the
Debenture Issuer has the right under the Indenture to defer payments of interest
by extending the interest payment period at any time and from time to time on
the Debentures for a period not exceeding 10 consecutive calendar semi-annual
periods, including the first such semi-annual period during such extension
period (each an "Extension Period"), provided that no Extension Period shall end
                                     -------- ----
on a day other than an Interest Payment Date for the Debentures or shall extend
beyond the Maturity Date of the Debentures. As a consequence of such deferral of
payments of interest on the Debentures, Distributions will also be deferred.
Despite such deferral, semi-annual Distributions will continue to accumulate
with interest thereon (to the extent permitted by applicable law, but not at a
rate exceeding the rate of interest then accruing on the Debentures) at the
Coupon Rate compounded semi-annually during any such Extension Period. Prior to
the termination of any such Extension Period, the Debenture Issuer may further
defer payments of interest by further extending such Extension Period; provided
                                                                       --------
that such Extension Period, together with all such previous and further
- ----
extensions within such Extension Period, may not exceed 10 consecutive
semi-annual periods, including the first semi-annual period during such
Extension Period, or extend beyond the Maturity Date of the Debentures. Payments
of accumulated Distributions will be payable to Holders as they appear on the
books and records of the Trust on the first record date preceding the end of the
Extension Period. Upon the termination of any Extension Period and the payment
of all amounts then due, the Debenture Issuer may commence a new Extension
Period, subject to the above requirements.

                                       -4-
<PAGE>
 
                  Subject to certain conditions set forth in the Declaration and
the Indenture, the Property Trustee may, at the direction of the Sponsor, at any
time liquidate the Trust and cause the Debentures to be distributed to the
holders of the Securities in liquidation of the Trust or, simultaneous with any
redemption of the Debentures, cause a Like Amount of the Securities to be
redeemed by the Trust.

                  The Capital Securities shall be redeemable as provided in the
Declaration.

                                       -5-
<PAGE>
 
                              ---------------------


                                   ASSIGNMENT

FOR VALUE RECEIVED, the undersigned assigns and transfers this Capital Security
certificate to:
- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------
        (Insert assignee's social security or tax identification number)


- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------
                    (Insert address and zip code of assignee)


and irrevocably appoints

- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------

___________________________________________________________ agent to transfer
this Capital Security certificate on the books of the Trust. The agent may
substitute another to act for him or her.


Date: _______________________

Signature: __________________
(Sign exactly as your name appears on the other side of this Capital Security 
Certificate)

Signature Guarantee***:___________________________________
                       
- -----------------
***      Signature must be guaranteed by an "eligible guarantor institution"
         that is a bank, stockbroker, savings and loan association or credit
         union meeting the requirements of the Registrar, which requirements
         include membership or participation in the Securities Transfer Agents
         Medallion Program ("STAMP") or such other "signature guarantee program"
         as may be determined by the Registrar in addition to, or in
         substitution for, STAMP, all in accordance with the Securities and
         Exchange Act of 1934, as amended.

                                       -6-
<PAGE>
 
                                    -------------------------------------
                                    Signature


                                    -------------------------------------
                                    Name:

                                      -7-
<PAGE>
 
                                   SCHEDULE A*

                  The initial aggregate liquidation amount of Capital Securities
evidenced by the Certificate to which this Schedule is attached is $__________
(equivalent to ________ Capital Securities). The notations on the following
table evidence decreases and increases in the number of Capital Securities
evidenced by such Certificate.

<TABLE> 
<CAPTION> 

                                                                Liquidation Amount of
         Decrease in             Increase in Liquidation         Capital Securities
    Liquidation Amount of           Amount of Capital           Remaining After Such               Notation by
     Capital Securities                Securities               Decrease or Increase               Registration
- --------------------------    --------------------------    --------------------------    --------------------------
<S>                           <C>                           <C>                           <C>  


</TABLE> 





- ----------------------------
*        Append to Global Capital Securities only.

                                      -1-

<PAGE>
 
                                                                     Exhibit 4.7


- --------------------------------------------------------------------------------



                SERIES B CAPITAL SECURITIES GUARANTEE AGREEMENT


                        Allmerica Financial Corporation


                         Dated as of ___________, 1997


- --------------------------------------------------------------------------------
<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------
<TABLE> 
<S>                                                                                                       <C>  
ARTICLE I DEFINITIONS AND INTERPRETATION....................................................................2

     SECTION 1.1.    Definitions and Interpretation.........................................................2

ARTICLE II  TRUST INDENTURE ACT.............................................................................6

     SECTION 2.1.    Trust Indenture Act; Application.......................................................6
     SECTION 2.2.    Lists of Holders of Securities.........................................................6
     SECTION 2.3.    Reports by the Capital Securities Guarantee Trustee....................................6
     SECTION 2.4.    Periodic Reports to Capital Securities Guarantee Trustee...............................7
     SECTION 2.5.    Evidence of Compliance with Conditions Precedent.......................................7
     SECTION 2.6.    Events of Default; Waiver..............................................................7
     SECTION 2.7.    Event of Default; Notice...............................................................7
     SECTION 2.8.    Conflicting Interests..................................................................8

ARTICLE III  POWERS, DUTIES AND RIGHTS OF CAPITAL SECURITIES
                     GUARANTEE TRUSTEE......................................................................8

     SECTION 3.1.    Powers and Duties of the Capital Securities Guarantee Trustee..........................8
     SECTION 3.2.    Certain Rights of Capital Securities Guarantee Trustee................................10
     SECTION 3.3.    Not Responsible for Recitals or Issuance of Series B Capital Securities Guarantee.....12

ARTICLE IV  CAPITAL SECURITIES GUARANTEE TRUSTEE...........................................................12

     SECTION 4.1.    Capital Securities Guarantee Trustee; Eligibility.....................................12
     SECTION 4.2.    Appointment, Removal and Resignation of Capital Securities Guarantee Trustee..........13

ARTICLE V  GUARANTEE.......................................................................................14

     SECTION 5.1.    Guarantee.............................................................................14
     SECTION 5.2.    Waiver of Notice and Demand...........................................................14
     SECTION 5.3.    Obligations Not Affected..............................................................14
     SECTION 5.4.    Rights of Holders.....................................................................15
     SECTION 5.5.    Guarantee of Payment..................................................................16
     SECTION 5.6.    Subrogation...........................................................................16
     SECTION 5.7.    Independent Obligations...............................................................16
</TABLE> 

                                       -i-
<PAGE>
 
<TABLE> 
<S>                                                                                                       <C>  
ARTICLE VI  LIMITATION OF TRANSACTIONS; SUBORDINATION......................................................17

     SECTION 6.1.    Limitation of Transactions............................................................17
     SECTION 6.2.    Ranking...............................................................................18

ARTICLE VII  TERMINATION...................................................................................18

     SECTION 7.1.    Termination...........................................................................18

ARTICLE VIII  COMPENSATION AND EXPENSES OF CAPITAL SECURITIES GUARANTEE TRUSTEE............................18

ARTICLE IX  INDEMNIFICATION................................................................................19

     SECTION 9.1.    Exculpation...........................................................................19
     SECTION 9.2.    Indemnification.......................................................................20

ARTICLE X  MISCELLANEOUS...................................................................................20

     SECTION 10.1.   Successors and Assigns................................................................20
     SECTION 10.2.   Amendments............................................................................20
     SECTION 10.3.   Notices...............................................................................20
     SECTION 10.4.   Exchange Offer........................................................................21
     SECTION 10.5.   Benefit...............................................................................22
     SECTION 10.6.   Governing Law.........................................................................22
</TABLE> 


                                     -ii-
<PAGE>
 
                Series B CAPITAL SECURITIES GUARANTEE AGREEMENT


          This GUARANTEE AGREEMENT (the "Series B Capital Securities
Guarantee"), dated as of _________, 1997, is executed and delivered by Allmerica
Financial Corporation, a Delaware corporation (the "Guarantor"), and The Chase
Manhattan Bank, a New York banking corporation, as trustee (the "Capital
Securities Guarantee Trustee"), for the benefit of the Holders (as defined
herein) from time to time of the Series B Capital Securities (as defined herein)
of AFC Capital Trust I, a Delaware statutory business trust (the "Issuer").

          WHEREAS, pursuant to an Amended and Restated Declaration of Trust (the
"Declaration"), dated as of February 3, 1997, among the trustees of the Issuer,
the Guarantor, as sponsor, and the holders from time to time of undivided
beneficial interests in the assets of the Issuer, the Issuer is issuing on the
date hereof 300,000 capital securities, having an aggregate liquidation amount
of $300,000,000, such capital securities being designated the 8.207% Series B
Capital Securities (collectively the "Series B Capital Securities") in
connection with the consummation of Exchange Offer (as defined in the
Declaration).

          WHEREAS, as incentive for the Holders to exchange the Series B Capital
Securities (as defined in the Declaration) for the Series B Capital Securities,
the Guarantor desires irrevocably and unconditionally to agree, to the extent
set forth in this Series B Capital Securities Guarantee, to pay to the Holders
the Guarantee Payments (as defined below).  The Guarantor agrees to make certain
other payments on the terms and conditions set forth herein.

          WHEREAS, the Guarantor has executed and delivered a guarantee
agreement (the "Common Securities Guarantee"), with substantially identical
terms to this Series B Capital Securities Guarantee, for the benefit of the
holders of the Common Securities (as defined herein), except that if an Event of
Default (as defined in the Declaration) has occurred and is continuing, the
rights of holders of the Common Securities to receive Guarantee Payments under
the Common Securities Guarantee are subordinated, to the extent and in the
manner set forth in the Common Securities Guarantee, to the rights of holders of
Series B Capital Securities and the Series B Capital Securities to receive
Guarantee Payments under the Series B Capital Securities Guarantee and this
Series B Capital Securities Guarantee, as the case may be.

          NOW, THEREFORE, in consideration of the purchase by each Holder, which
purchase the Guarantor hereby acknowledges shall benefit the Guarantor, the
Guarantor executes and delivers this Series B Capital Securities Guarantee for
the benefit of the Holders.
<PAGE>
 
                                   ARTICLE I
                        DEFINITIONS AND INTERPRETATION

SECTION 1.1.  Definitions and Interpretation
              ------------------------------

   In this Series B Capital Securities Guarantee, unless the context otherwise
requires:

   (a) Capitalized terms used in this Series B Capital Securities Guarantee but
not defined in the preamble above have the respective meanings assigned to them
in this Section 1.1;

   (b) Terms defined in the Declaration as at the date of execution of this
Series B Capital Securities Guarantee have the same meaning when used in this
Series B Capital Securities Guarantee unless otherwise defined in this Series B
Capital Securities Guarantee;

   (c) a term defined anywhere in this Series B Capital Securities Guarantee has
the same meaning throughout;

   (d) all references to "the Series B Capital Securities Guarantee" or "this
Series B Capital Securities Guarantee" are to this Series B Capital Securities
Guarantee as modified, supplemented or amended from time to time;

   (e) all references in this Series B Capital Securities Guarantee to Articles
and Sections are to Articles and Sections of this Series B Capital Securities
Guarantee, unless otherwise specified;

   (f) a term defined in the Trust Indenture Act has the same meaning when used
in this Series B Capital Securities Guarantee, unless otherwise defined in this
Series B Capital Securities Guarantee or unless the context otherwise requires;
and

   (g) a reference to the singular includes the plural and vice versa.

   "Affiliate" has the same meaning as given to that term in Rule 405 under the
    ---------                                                                  
Securities Act of 1933, as amended, or any successor rule thereunder.

   "Business Day" means any day other than a Saturday or a Sunday, or a day on
    ------------                                                              
which banking institutions in The City of New York are authorized or required by
law or executive order to close.

   "Capital Securities Guarantee Trustee" means The Chase Manhattan Bank, a New
    ------------------------------------                                       
York banking corporation, until a Successor Capital Securities Guarantee Trustee
has been appointed and has accepted such appointment pursuant to the terms of
this Series B Capital Securities Guarantee and thereafter means each such
Successor Capital Securities Guarantee Trustee.

                                      -2-
<PAGE>
 
   "Common Securities" means the securities representing common undivided
    -----------------                                                    
beneficial interests in the assets of the Issuer.

   "Corporate Trust Office" means the office of the Capital Securities Guarantee
    ----------------------                                                      
Trustee at which the corporate trust business of the Capital Securities
Guarantee Trustee shall, at any particular time, be principally administered,
which office at the date of execution of this Agreement is located at 450 West
33rd Street, New York, New York 10001, Attention: Global Trust Services.

   "Covered Person" means any Holder or beneficial owner of Series B Capital
    --------------                                                          
Securities.

   "Debentures" means the series of subordinated debt securities of the
    ----------                                                         
Guarantor designated the 8.207% Series B Junior Subordinated Deferrable Interest
Debentures due February 3, 2027 held by the Property Trustee (as defined in the
Declaration) of the Issuer.

   "Event of Default" means a default by the Guarantor on any of its payment or
    ----------------                                                           
other obligations under this Series B Capital Securities Guarantee.

   "Guarantee Payments" means the following payments or distributions, without
    ------------------                                                        
duplication, with respect to the Series B Capital Securities, to the extent not
paid or made by the Issuer:  (i) any accumulated and unpaid Distributions (as
defined in the Declaration) that are required to be paid on such Series B
Capital Securities to the extent the Issuer has funds on hand legally available
therefor at such time, (ii) the redemption price, including all accumulated and
unpaid Distributions to the date of redemption (the "Redemption Price") to the
extent the Issuer has funds on hand legally available therefor at such time,
with respect to any Series B Capital Securities called for redemption by the
Issuer, and (iii) upon a voluntary or involuntary termination and liquidation of
the Issuer (other than in connection with the distribution of Debentures to the
Holders in exchange for Series B Capital Securities as provided in the
Declaration), the lesser of (a) the aggregate of the liquidation amount and all
accumulated and unpaid Distributions on the Series B Capital Securities to the
date of payment, to the extent the Issuer has funds on hand legally available
therefor, and (b) the amount of assets of the Issuer remaining available for
distribution to Holders in liquidation of the Issuer.  If an Event of Default
has occurred and is continuing, no Guarantee Payments under the Common
Securities Guarantee with respect to the Common Securities or any guarantee
payment under any Other Common Securities Guarantees shall be made until the
Holders shall be paid in full the Guarantee Payments to which they are entitled
under this Series B Capital Securities Guarantee.

   "Holder" shall mean any holder, as registered on the books and records of the
    ------                                                                      
Issuer, of any Series B Capital Securities; provided, however, that, in
determining whether the holders of the requisite percentage of Series B Capital
Securities have given any request, notice, consent or waiver hereunder, "Holder"
shall not include the Guarantor or any Affiliate of the Guarantor.

                                      -3-
<PAGE>
 
   "Indemnified Person" means the Capital Securities Guarantee Trustee, any
    ------------------                                                     
Affiliate of the Capital Securities Guarantee Trustee, or any officers,
directors, shareholders, members, partners, employees, representatives,
nominees, custodians or agents of the Capital Securities Guarantee Trustee.

   "Indenture" means the Indenture dated as of February 3, 1997, between the
    ---------                                                               
Guarantor (the "Debenture Issuer") and The Chase Manhattan Bank, as trustee,
pursuant to which the Debentures are to be issued to the Property Trustee of the
Issuer.

   "Majority in liquidation amount of the Series B Capital Securities" means,
    -----------------------------------------------------------------        
except as provided by the Trust Indenture Act, a vote by Holder(s) of more than
50% of the aggregate liquidation amount (including the stated amount that would
be paid on redemption, liquidation or otherwise, plus accumulated and unpaid
Distributions to the date upon which the voting percentages are determined) of
all Series B Capital Securities.

   "Officers' Certificate" means, with respect to any person, a certificate
    ---------------------                                                  
signed by the Chairman, a Vice Chairman, the Chief Executive Officer, the
President, a Vice President, the Comptroller, the Secretary or an Assistant
Secretary of the Guarantor.  Any Officers' Certificate delivered with respect
to compliance with a condition or covenant provided for in this Series B Capital
Securities Guarantee (other than pursuant to Section 314(a)(4) of the Trust
Indenture Act) shall include:

   (a)  a statement that each officer signing the Officers' Certificate has read
the covenant or condition and the definitions relating thereto;

   (b)  a statement that each such officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

   (c)  a statement as to whether, in the opinion of each such officer, such
condition or covenant has been complied with.

   "Other Common Securities Guarantees" shall have the same meaning as "Other
    ----------------------------------                                       
Guarantees" in the Common Securities Guarantee.

   "Other Debentures" means all junior subordinated debentures issued by the
    ----------------                                                        
Guarantor from time to time and sold to trusts to be established by the
Guarantor (if any), in each case similar to the Issuer.

   "Other Guarantees" means all guarantees to be issued by the Guarantor with
    ----------------                                                         
respect to capital securities (if any) similar to the Series B Capital
Securities issued by other trusts to be established by the Guarantor (if any),
in each case similar to the Issuer.

                                      -4-
<PAGE>
 
   "Person" means a legal person, including any individual, corporation, estate,
    ------                                                                      
partnership, joint venture, association, joint stock company, limited liability
company, trust, unincorporated association, or government or any agency or
political subdivision thereof, or any other entity of whatever nature.

   "Registration Rights Agreement"  means the Registration Rights Agreement,
    -----------------------------                                           
dated as of February 3, 1997, by and among the Guarantor, the Issuer and the
Initial Purchasers named therein as such agreement may be amended, modified or
supplemented from time to time.

   "Responsible Officer" means, with respect to the Capital Securities Guarantee
    -------------------                                                         
Trustee, any officer within the Corporate Trust Office of the Capital Securities
Guarantee Trustee, including any vice president, any assistant vice president,
any secretary, any assistant secretary, the treasurer, any assistant treasurer,
any trust officer, any senior trust officer or other officer in the Corporate
Trust Office of the Capital Securities Guarantee Trustee customarily performing
functions similar to those performed by any of the above designated officers and
also means, with respect to a particular corporate trust matter, any other
officer to whom such matter is referred because of that officer's knowledge of
and familiarity with the particular subject.

   "Successor Capital Securities Guarantee Trustee" means a successor Capital
    ----------------------------------------------                           
Securities Guarantee Trustee possessing the qualifications to act as Capital
Securities Guarantee Trustee under Section 4.1.

   "Trust Indenture Act" means the Trust Indenture Act of 1939, as amended.
    -------------------                                                    

   "Trust Securities" means the Common Securities and the Series B Capital
    ----------------                                                      
Securities and Series B Capital Securities, collectively.

                                      -5-
<PAGE>
 
                                 ARTICLE II
                              TRUST INDENTURE ACT

 SECTION 2.1.  Trust Indenture Act; Application
               --------------------------------

   (a) This Series B Capital Securities Guarantee is subject to the provisions
of the Trust Indenture Act that are required to be part of this Series B Capital
Securities Guarantee and shall, to the extent applicable, be governed by such
provisions; and

   (b) if and to the extent that any provision of this Series B Capital
Securities Guarantee limits, qualifies or conflicts with the duties imposed by
Section 310 to 317, inclusive, of the Trust Indenture Act, such imposed duties
shall control.

SECTION 2.2.  Lists of Holders of Securities
              ------------------------------

   (a) The Guarantor shall provide the Capital Securities Guarantee Trustee
(unless the Capital Securities Guarantee Trustee is otherwise the registrar of
the Capital Securities) with a list, in such form as the Capital Securities
Guarantee Trustee may reasonably require, of the names and addresses of the
Holders ("List of Holders") as of such date, (i) within one Business Day after
June 1 and December 1 of each year, and (ii) at any other time within 30 days of
receipt by the Guarantor of a written request for a List of Holders as of a date
no more than 14 days before such List of Holders is given to the Capital
Securities Guarantee Trustee provided, that the Guarantor shall not be obligated
                             --------                                           
to provide such List of Holders at any time the List of Holders does not differ
from the most recent List of Holders given to the Capital Securities Guarantee
Trustee by the Guarantor.  The Capital Securities Guarantee Trustee may destroy
any List of Holders previously given to it on receipt of a new List of Holders.

   (b) The Capital Securities Guarantee Trustee shall comply with its
obligations under Sections 311(a), 311(b) and Section 312(b) of the Trust
Indenture Act.

SECTION 2.3.  Reports by the Capital Securities Guarantee Trustee
              ---------------------------------------------------

   Within 90 days after December 31 of each year, commencing December 31, 1997,
the Capital Securities Guarantee Trustee shall provide to the Holders such
reports as are required by Section 313(a) of the Trust Indenture Act, if any, in
the form and in the manner provided by Section 313 of the Trust Indenture Act.
The Capital Securities Guarantee Trustee shall also comply with the other
requirements of Section 313 of the Trust Indenture Act.

                                      -6-
<PAGE>
 
SECTION 2.4.  Periodic Reports to Capital Securities Guarantee Trustee
              --------------------------------------------------------

   The Guarantor shall provide to the Capital Securities Guarantee Trustee such
documents, reports and information as required by Section 314 (if any) and the
compliance certificate required by Section 314 of the Trust Indenture Act in the
form, in the manner and at the times required by Section 314 of the Trust
Indenture Act provided that such compliance certificate shall be delivered on or
before 120 days after the end of each fiscal year of the Guarantor.  Delivery of
such reports, information and documents to the Capital Securities Guarantee
Trustee is for informational purposes only and the Capital Securities Guarantee
Trustee's receipt of such shall not constitute constructive notice of any
information contained therein or determinable from information contained
therein, including the Guarantor's compliance with any of its covenants
hereunder (as to which the Capital Securities Guarantee Trustee is entitled to
rely exclusively on Officers' Certificates).

SECTION 2.5.  Evidence of Compliance with Conditions Precedent
              ------------------------------------------------

   The Guarantor shall provide to the Capital Securities Guarantee Trustee such
evidence of compliance with any conditions precedent, if any, provided for in
this Series B Capital Securities Guarantee that relate to any of the matters set
forth in Section 314(c) of the Trust Indenture Act.  Any certificate or opinion
required to be given by an officer pursuant to Section 314(c)(1) may be given in
the form of an Officers' Certificate.

SECTION 2.6.  Events of Default; Waiver
              -------------------------

   The Holders of a Majority in liquidation amount of Series B Capital
Securities may, by vote, on behalf of all the Holders, waive any past Event of
Default and its consequences. Upon such waiver, any such Event of Default shall
cease to exist, and any Event of Default arising therefrom shall be deemed to
have been cured, for every purpose of this Series B Capital Securities
Guarantee, but no such waiver shall extend to any subsequent or other default or
Event of Default or impair any right consequent thereon.

SECTION 2.7.  Event of Default; Notice
              ------------------------

   (a) The Capital Securities Guarantee Trustee shall, within five Business Days
after the occurrence of an Event of Default is actually known to a Responsible
Officer of the Capital Securities Guarantee Trustee, mail by first class postage
prepaid, to all Holders, notices of all defaults actually known to a Responsible
Officer of the Capital Securities Guarantee Trustee, unless such defaults have
been cured before the giving of such notice, provided, that, except in the case
of default in the payment of any Guarantee Payment, the Capital Securities
Guarantee Trustee shall be protected in withholding such notice if and so long
as the board of directors, the executive committee, or a trust committee of
directors and/or Responsible Officers of the Capital Securities Guarantee
Trustee in good faith determines that the withholding of such notice is in the
interests of the holders of the Series B Capital Securities.

                                      -7-
<PAGE>
 
   (b) The Capital Securities Guarantee Trustee shall not be deemed to have
knowledge of any Event of Default unless the Capital Securities Guarantee
Trustee shall have received written notice from the Guarantor or a Holder, or a
Responsible Officer of the Capital Securities Guarantee Trustee charged with the
administration of the Series B Capital Securities Guarantee shall have obtained
actual knowledge, of such Event of Default.

SECTION 2.8.  Conflicting Interests
              ---------------------

   The Declaration shall be deemed to be specifically described in this Series B
Capital Securities Guarantee for the purposes of clause (i) of the first proviso
contained in Section 310(b) of the Trust Indenture Act.


                                 ARTICLE III
                          POWERS, DUTIES AND RIGHTS OF
                      CAPITAL SECURITIES GUARANTEE TRUSTEE

SECTION 3.1.  Powers and Duties of the Capital Securities Guarantee Trustee
              -------------------------------------------------------------

   (a) This Series B Capital Securities Guarantee shall be held by the Capital
Securities Guarantee Trustee for the benefit of the Holders, and the Capital
Securities Guarantee Trustee shall not transfer this Series B Capital Securities
Guarantee to any Person except a Holder exercising his or her rights pursuant to
Section 5.4(b) or to a Successor Capital Securities Guarantee Trustee on
acceptance by such Successor Capital Securities Guarantee Trustee of its
appointment to act as Successor Capital Securities Guarantee Trustee. The right,
title and interest of the Capital Securities Guarantee Trustee shall
automatically vest in any Successor Capital Securities Guarantee Trustee, and
such vesting and succession of title shall be effective whether or not
conveyancing documents have been executed and delivered pursuant to the
appointment of such Successor Capital Securities Guarantee Trustee.

   (b) If an Event of Default actually known to a Responsible Officer of the
Capital Securities Guarantee Trustee has occurred and is continuing, the Capital
Securities Guarantee Trustee shall enforce this Series B Capital Securities
Guarantee for the benefit of the Holders.

   (c) The Capital Securities Guarantee Trustee, before the occurrence of any
Event of Default and after the curing of all Events of Default that may have
occurred, shall undertake to perform only such duties as are specifically set
forth in this Series B Capital Securities Guarantee, and no implied covenants
shall be read into this Series B Capital Securities Guarantee against the
Capital Securities Guarantee Trustee.  In case an Event of Default has occurred
(that has not been cured or waived pursuant to Section 2.6) and is actually
known to a Responsible Officer of the Capital Securities Guarantee Trustee, the
Capital Securities Guarantee Trustee shall exercise such of the rights and
powers vested in it by this Series B

                                      -8-
<PAGE>
 
Capital Securities Guarantee, and use the same degree of care and skill in its
exercise thereof, as a prudent person would exercise or use under the
circumstances in the conduct of his or her own affairs.

   (d) No provision of this Series B Capital Securities Guarantee shall be
construed to relieve the Capital Securities Guarantee Trustee from liability for
its own negligent action, its own negligent failure to act, or its own willful
misconduct, except that:

       (i)    prior to the occurrence of any Event of Default and after the
   curing or waiving of all such Events of Default that may have occurred:

              (A) the duties and obligations of the Capital Securities Guarantee
       Trustee shall be determined solely by the express provisions of this
       Series B Capital Securities Guarantee, and the Capital Securities
       Guarantee Trustee shall not be liable except for the performance of such
       duties and obligations as are specifically set forth in this Series B
       Capital Securities Guarantee, and no implied covenants or obligations
       shall be read into this Series B Capital Securities Guarantee against the
       Capital Securities Guarantee Trustee; and

              (B) in the absence of bad faith on the part of the Capital
       Securities Guarantee Trustee, the Capital Securities Guarantee Trustee
       may conclusively rely, as to the truth of the statements and the
       correctness of the opinions expressed therein, upon any certificates or
       opinions furnished to the Capital Securities Guarantee Trustee and
       conforming to the requirements of this Series B Capital Securities
       Guarantee; but in the case of any such certificates or opinions that by
       any provision hereof are specifically required to be furnished to the
       Capital Securities Guarantee Trustee, the Capital Securities Guarantee
       Trustee shall be under a duty to examine the same to determine whether or
       not they conform to the requirements of this Series B Capital Securities
       Guarantee;

       (ii)   the Capital Securities Guarantee Trustee shall not be liable for
any error of judgment made in good faith by a Responsible Officer of the Capital
Securities Guarantee Trustee, unless it shall be proved that the Capital
Securities Guarantee Trustee was negligent in ascertaining the pertinent facts
upon which such judgment was made;

       (iii)  the Capital Securities Guarantee Trustee shall not be liable with
respect to any action taken or omitted to be taken by it in good faith in
accordance with the direction of the Holders of a Majority in liquidation
amount of the Series B Capital Securities relating to the time, method and place
of conducting any proceeding for any remedy available to the Capital Securities
Guarantee Trustee, or exercising any trust or power conferred upon the Capital
Securities Guarantee Trustee under this Series B Capital Securities Guarantee;
and

                                      -9-
<PAGE>
 
         (iv)  no provision of this Series B Capital Securities Guarantee shall
require the Capital Securities Guarantee Trustee to expend or risk its own funds
or otherwise incur personal financial liability in the performance of any of its
duties or in the exercise of any of its rights or powers, if the Capital
Securities Guarantee Trustee shall have reasonable grounds for believing that
the repayment of such funds or liability is not reasonably assured to it under
the terms of this Series B Capital Securities Guarantee or indemnity, reasonably
satisfactory to the Capital Securities Guarantee Trustee, against such risk or
liability is not reasonably assured to it.

SECTION 3.2.  Certain Rights of Capital Securities Guarantee Trustee
              ------------------------------------------------------

     (a) Subject to the provisions of Section 3.1:

         (i)   The Capital Securities Guarantee Trustee may conclusively rely,
     and shall be fully protected in acting or refraining from acting, upon any
     resolution, certificate, statement, instrument, opinion, report, notice,
     request, direction, consent, order, bond, debenture, note, other evidence
     of indebtedness or other paper or document believed by it to be genuine and
     to have been signed, sent or presented by the proper party or parties.

         (ii)  Any direction or act of the Guarantor contemplated by this Series
     B Capital Securities Guarantee may be sufficiently evidenced by an
     Officers' Certificate.

         (iii) Whenever, in the administration of this Series B Capital
     Securities Guarantee, the Capital Securities Guarantee Trustee shall deem
     it desirable that a matter be proved or established before taking,
     suffering or omitting any action hereunder, the Capital Securities
     Guarantee Trustee (unless other evidence is herein specifically prescribed)
     may, in the absence of bad faith on its part, request, shall be entitled to
     receive and may conclusively rely upon an Officers' Certificate which, upon
     receipt of such request, shall be promptly delivered by the Guarantor.

         (iv)  The Capital Securities Guarantee Trustee shall have no duty to
     see to any recording, filing or registration of any instrument (or any
     rerecording, refiling or registration thereof).

         (v)   The Capital Securities Guarantee Trustee may consult with counsel
     of its selection, and the advice or opinion of such counsel with respect to
     legal matters shall be full and complete authorization and protection in
     respect of any action taken, suffered or omitted by it hereunder in good
     faith and in accordance with such advice or opinion. Such counsel may be
     counsel to the Guarantor or any of its Affiliates and may include any of
     its employees. The Capital Securities Guarantee Trustee shall have

                                      -10-
<PAGE>
 
the right at any time to seek instructions concerning the administration of this
Series B Capital Securities Guarantee from any court of competent jurisdiction.

         (vi)    The Capital Securities Guarantee Trustee shall be under no
obligation to exercise any of the rights or powers vested in it by this Series B
Capital Securities Guarantee at the request or direction of any Holder, unless
such Holder shall have provided to the Capital Securities Guarantee Trustee
such security and indemnity, reasonably satisfactory to the Capital Securities
Guarantee Trustee, against the costs, expenses (including attorneys' fees and
expenses and the expenses of the Capital Securities Guarantee Trustee's agents,
nominees or custodians) and liabilities that might be incurred by it in
complying with such request or direction, including such reasonable advances as
may be requested by the Capital Securities Guarantee Trustee; provided that,
nothing contained in this Section 3.2(a)(vi) shall be taken to relieve the
Capital Securities Guarantee Trustee, upon the occurrence of an Event of
Default, of its obligation to exercise the rights and powers vested in it by
this Series B Capital Securities Guarantee.

         (vii)   The Capital Securities Guarantee Trustee shall not be bound to
make any investigation into the facts or matters stated in any resolution,
certificate, statement, instrument, opinion, report, notice, request, direction,
consent, order, bond, debenture, note, other evidence of indebtedness or other
paper or document, but the Capital Securities Guarantee Trustee, in its
discretion, may make such further inquiry or investigation into such facts or
matters as it may see fit.

         (viii)  The Capital Securities Guarantee Trustee may execute any of the
trusts or powers hereunder or perform any duties hereunder either directly or by
or through agents, nominees, custodians or attorneys, and the Capital Securities
Guarantee Trustee shall not be responsible for any misconduct or negligence on
the part of any agent or attorney appointed with due care by it hereunder.

         (ix)    Any action taken by the Capital Securities Guarantee Trustee or
its agents hereunder shall bind the Holders, and the signature of the Capital
Securities Guarantee Trustee or its agents alone shall be sufficient and
effective to perform any such action. No third party shall be required to
inquire as to the authority of the Capital Securities Guarantee Trustee to so
act or as to its compliance with any of the terms and provisions of this Series
B Capital Securities Guarantee, both of which shall be conclusively evidenced
by the Capital Securities Guarantee Trustee's or its agent's taking such action.

         (x)     Whenever in the administration of this Series B Capital
Securities Guarantee the Capital Securities Guarantee Trustee shall deem it
desirable to receive instructions with respect to enforcing any remedy or right
or taking any other action hereunder, the Capital Securities Guarantee Trustee
(i) may request instructions from the Holders of a Majority in liquidation
amount of the Series B Capital Securities, (ii)

                                      -11-
<PAGE>
 
         may refrain from enforcing such remedy or right or taking such other
         action until such instructions are received, and (iii) shall be
         protected in conclusively relying on or acting in accordance with such
         instructions.

              (xi)   The Capital Securities Guarantee Trustee shall not be
         liable for any action taken, suffered, or omitted to be taken by it in
         good faith, without negligence, and reasonably believed by it to be
         authorized or within the discretion or rights or powers conferred upon
         it by this Series B Capital Securities Guarantee.

              (xii)  Except as otherwise expressly provided by this Series B
         Capital Securities Guarantee, the Capital Securities Guarantee Trustee
         shall not be under any obligation to take any action that is
         discretionary hereunder.

         (b)  No provision of this Series B Capital Securities Guarantee shall
be deemed to impose any duty or obligation on the Capital Securities Guarantee
Trustee to perform any act or acts or exercise any right, power, duty or
obligation conferred or imposed on it in any jurisdiction in which it shall be
illegal, or in which the Capital Securities Guarantee Trustee shall be
unqualified or incompetent in accordance with applicable law, to perform any
such act or acts or to exercise any such right, power, duty or obligation, or
which would expose the Capital Securities Guarantee Trustee to liability,
financial or otherwise. No permissive power or authority available to the
Capital Securities Guarantee Trustee shall be construed to be a duty.

SECTION 3.3. Not Responsible for Recitals or Issuance of Series B Capital
             ------------------------------------------------------------
             Securities Guarantee
             --------------------

         The recitals contained in this Series B Capital Securities Guarantee
shall be taken as the statements of the Guarantor, and the Capital Securities
Guarantee Trustee does not assume any responsibility for their correctness. The
Capital Securities Guarantee Trustee makes no representation as to the validity
or sufficiency of this Series B Capital Securities Guarantee.


                                 ARTICLE IV
                      CAPITAL SECURITIES GUARANTEE TRUSTEE

SECTION 4.1.  Capital Securities Guarantee Trustee; Eligibility
              -------------------------------------------------

         (a) There shall at all times be a Capital Securities Guarantee Trustee
which shall:

             (i)   not be an Affiliate of the Guarantor; and

             (ii)  be a corporation organized and doing business under the laws
         of the United States of America or any State or Territory thereof or of
         the District of Columbia, or a

                                      -12-
<PAGE>
 
         corporation or Person permitted by the Securities and Exchange
         Commission to act as an institutional trustee under the Trust Indenture
         Act, authorized under such laws to exercise corporate trust powers,
         having a combined capital and surplus of at least 50 million U.S.
         dollars ($50,000,000), and subject to supervision or examination by
         Federal, State, Territorial or District of Columbia authority. If such
         corporation publishes reports of condition at least annually, pursuant
         to law or to the requirements of the supervising or examining authority
         referred to above, then, for the purposes of this Section 4.1(a)(ii),
         the combined capital and surplus of such corporation shall be deemed to
         be its combined capital and surplus as set forth in its most recent
         report of condition so published.

         (b)  If at any time the Capital Securities Guarantee Trustee shall
cease to be eligible to so act under Section 4.1(a), the Capital Securities
Guarantee Trustee shall immediately resign in the manner and with the effect set
out in Section 4.2(c).

         (c)  If the Capital Securities Guarantee Trustee has or shall acquire
any "conflicting interest" within the meaning of Section 310(b) of the Trust
Indenture Act, the Capital Securities Guarantee Trustee and Guarantor shall in
all respects comply with the provisions of Section 310(b) of the Trust Indenture
Act, subject to the penultimate paragraph thereof.

SECTION 4.2.  Appointment, Removal and Resignation of Capital Securities
              ----------------------------------------------------------
              Guarantee Trustee
              -----------------

         (a)  Subject to Section 4.2(b), the Capital Securities Guarantee
Trustee may be appointed or removed without cause at any time by the Guarantor
except during an Event of Default.

         (b)  The Capital Securities Guarantee Trustee shall not be removed in
accordance with Section 4.2(a) until a Successor Capital Securities Guarantee
Trustee has been appointed and has accepted such appointment by written
instrument executed by such Successor Capital Securities Guarantee Trustee and
delivered to the Guarantor.

         (c)  The Capital Securities Guarantee Trustee shall hold office until a
Successor Capital Securities Guarantee Trustee shall have been appointed or
until its removal or resignation.  The Capital Securities Guarantee Trustee may
resign from office (without need for prior or subsequent accounting) by an
instrument in writing executed by the Capital Securities Guarantee Trustee and
delivered to the Guarantor, which resignation shall not take effect until a
Successor Capital Securities Guarantee Trustee has been appointed and has
accepted such appointment by instrument in writing executed by such Successor
Capital Securities Guarantee Trustee and delivered to the Guarantor and the
resigning Capital Securities Guarantee Trustee.

                                      -13-
<PAGE>
 
         (d)  If no Successor Capital Securities Guarantee Trustee shall have
been appointed and accepted appointment as provided in this Section 4.2 within
60 days after delivery of an instrument of removal or resignation, the Capital
Securities Guarantee Trustee resigning or being removed may petition any court
of competent jurisdiction for appointment of a Successor Capital Securities
Guarantee Trustee. Such court may thereupon, after prescribing such notice, if
any, as it may deem proper, appoint a Successor Capital Securities Guarantee
Trustee.

         (e)  No Capital Securities Guarantee Trustee shall be liable for the
acts or omissions to act of any Successor Capital Securities Guarantee Trustee.

         (f)  Upon termination of this Series B Capital Securities Guarantee or
removal or resignation of the Capital Securities Guarantee Trustee pursuant to
this Section 4.2, the Guarantor shall pay to the Capital Securities Guarantee
Trustee all amounts due to the Capital Securities Guarantee Trustee accrued to
the date of such termination, removal or resignation.


                                   ARTICLE V
                                   GUARANTEE

SECTION 5.1.  Guarantee
              ---------

         The Guarantor irrevocably and unconditionally agrees to pay in full to
the Holders the Guarantee Payments (without duplication of amounts theretofore
paid by the Issuer), as and when due, regardless of any defense, right of set-
off or counterclaim that the Issuer may have or assert. The Guarantor's
obligation to make a Guarantee Payment may be satisfied by direct payment of the
required amounts by the Guarantor to the Holders or by causing the Issuer to pay
such amounts to the Holders.

SECTION 5.2.  Waiver of Notice and Demand
              ---------------------------

         The Guarantor hereby waives notice of acceptance of this Series B
Capital Securities Guarantee and of any liability to which it applies or may
apply, presentment, demand for payment, any right to require a proceeding first
against the Issuer or any other Person before proceeding against the Guarantor,
protest, notice of nonpayment, notice of dishonor, notice of redemption and all
other notices and demands.

SECTION 5.3.  Obligations Not Affected
              ------------------------

         Except as otherwise provided herein, the obligations, covenants,
agreements and duties of the Guarantor under this Series B Capital Securities
Guarantee shall in no way be affected or impaired by reason of the happening
from time to time of any of the following:

                                      -14-
<PAGE>
 
         (a)  the release or waiver, by operation of law or otherwise, of the
performance or observance by the Issuer of any express or implied agreement,
covenant, term or condition relating to the Series B Capital Securities to be
performed or observed by the Issuer;

         (b)  the extension of time for the payment by the Issuer of all or any
portion of the Distributions, Redemption Price, Liquidation Distribution or any
other sums payable under the terms of the Series B Capital Securities or the
extension of time for the performance of any other obligation under, arising out
of, or in connection with, the Series B Capital Securities (other than an
extension of time for payment of Distributions, Redemption Price, Liquidation
Distribution or other sum payable that results from the extension of any
interest payment period on the Debentures permitted by the Indenture);

         (c)  any failure, omission, delay or lack of diligence on the part of
the Holders to enforce, assert or exercise any right, privilege, power or remedy
conferred on the Holders pursuant to the terms of the Series B Capital
Securities, or any action on the part of the Issuer granting indulgence or
extension of any kind;

         (d)  the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement, composition or readjustment of debt of,
or other similar proceedings affecting, the Issuer or any of the assets of the
Issuer;

         (e)  any invalidity of, or defect or deficiency in, the Series B
Capital Securities;

         (f)  the settlement or compromise of any obligation guaranteed hereby
or hereby incurred;

         (g)  the consummation of the Exchange Offer; or

         (h)  any other circumstance whatsoever that might otherwise constitute
a legal or equitable discharge or defense of a guarantor, it being the intent of
this Section 5.3 that the obligations of the Guarantor with respect to the
Guarantee Payments shall be absolute and unconditional under any and all
circumstances.

         There shall be no obligation of the Holders to give notice to, or
obtain consent of, the Guarantor with respect to the happening of any of the
foregoing.

SECTION 5.4.  Rights of Holders
              -----------------

         (a)  The Holders of a Majority in liquidation amount of the Series B
Capital Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Capital Securities
Guarantee Trustee in respect of this Series B Capital Securities Guarantee or
exercising any trust or power conferred upon the Capital

                                      -15-
<PAGE>
 
Securities Guarantee Trustee under this Series B Capital Securities Guarantee
provided, however, that, subject to Section 3.1, the Capital Securities
- --------  -------                                                      
Guarantee Trustee shall have the right to decline to follow any such direction
if the Capital Securities Guarantee Trustee shall determine that the action so
directed would be unjustly prejudicial to the holders not taking part in such
direction or if the Capital Securities Guarantee Trustee being advised by
counsel determines that the action or proceeding so directed may not lawfully be
taken or if the Capital Securities Guarantee Trustee in good faith by its
Responsible Officers shall determine that the action or proceedings so directed
would involve the Capital Securities Guarantee Trustee in personal liability.

     (b)   If the Capital Securities Guarantee Trustee fails to enforce such
Series B Capital Securities Guarantee, any Holder may institute a legal
proceeding directly against the Guarantor to enforce the Capital Securities
Guarantee Trustee's rights under this Series B Capital Securities Guarantee,
without first instituting a legal proceeding against the Issuer, the Capital
Securities Guarantee Trustee or any other person or entity. The Guarantor waives
any right or remedy to require that any action be brought first against the
Issuer or any other person or entity before proceeding directly against the
Guarantor.

SECTION 5.5.     Guarantee of Payment
                 --------------------

     This Series B Capital Securities Guarantee creates a guarantee of payment
and not of collection.

SECTION 5.6.     Subrogation
                 -----------

     The Guarantor shall be subrogated to all (if any) rights of the Holders
against the Issuer in respect of any amounts paid to such Holders by the
Guarantor under this Series B Capital Securities Guarantee; provided, however,
that the Guarantor shall not (except to the extent required by mandatory
provisions of law) be entitled to enforce or exercise any right that it may
acquire by way of subrogation or any indemnity, reimbursement or other
agreement, in all cases as a result of payment under this Series B Capital
Securities Guarantee, if, at the time of any such payment, any amounts are due
and unpaid under this Series B Capital SecuritiesGuarantee.  If any amount shall
be paid to the Guarantor in violation of the preceding sentence, the Guarantor
agrees to hold such amount in trust for the Holders and to pay over such amount
to the Holders.

SECTION 5.7.     Independent Obligations
                 -----------------------

     The Guarantor acknowledges that its obligations hereunder are independent
of the obligations of the Issuer with respect to the Series B Capital
Securities, and that the Guarantor shall be liable as principal and as debtor
hereunder to make Guarantee Payments pursuant to the terms of this Series B
Capital Securities Guarantee notwithstanding the occurrence of any event
referred to in subsections (a) through (h), inclusive, of Section 5.3 hereof.

                                      -16-
<PAGE>
 
                                 ARTICLE VI
                   LIMITATION OF TRANSACTIONS; SUBORDINATION

SECTION 6.1.     Limitation of Transactions
                 --------------------------

     So long as any Capital Securities remain outstanding, the Guarantor shall
not (i) declare or pay any dividends or distributions on, or redeem, purchase,
acquire, or make a liquidation payment with respect to, any of the Guarantor's
capital stock (which includes common and preferred stock), (ii) make any payment
of principal, interest or premium, if any, on or repay, repurchase or redeem any
debt securities of the Guarantor (including any Other Debentures) that rank pari
passu with or junior in right of payment to the Junior Subordinated Debentures
or (iii) make any guarantee payments with respect to any guarantee by the
Guarantor of any securities of any subsidiary of the Guarantor (including Other
Guarantees) if such guarantee ranks pari passu with or junior in right of
payment to the Junior Subordinated Debentures (other than (a) dividends or
distributions in shares of or options, warrants or rights to subscribe for or
purchase shares of, common stock of the Guarantor, (b) any declaration of a
dividend in connection with the implementation of a stockholder's rights plan,
or the issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto, (c) payments under the
Guarantee, (d) as a direct result of, and only to the extent required in order
to avoid the issuance of fractional shares of capital stock following, a
reclassification of the Guarantor's capital stock or the exchange or conversion
of one class or series of the Guarantor's capital stock for another class or
series of the Guarantor's capital stock or pursuant to an acquisition in which
fractional shares of the Guarantor's capital stock would otherwise be issued,
(e) the purchase of fractional interests in shares of the Guarantor's capital
stock pursuant to the conversion or exchange provisions of such capital stock or
the security being converted or exchanged, and (f) purchases of common stock
related to the issuance of common stock or rights under any benefit plan for
directors, officers, agents or employees of the Guarantor or its subsidiaries or
any of the Guarantor's dividend reinvestment or director, officer, agent or
employee stock purchase plans) if at such time (i) an Event of Default (as
defined in the Indenture) shall have occurred and be continuing, or would occur
upon the taking of any action specified in clauses (i) through (iii) above, (ii)
there shall have occurred any event of which the Guarantor has actual knowledge
that (a) is, or with the giving of notice or the lapse of time, or both, would
be an Event of Default (as defined in the Indenture) and (b) in respect of which
the Guarantor shall not have taken reasonable steps to cure, (iii) if such
Debentures are held by the Property Trustee, the Guarantor shall be in default
with respect to its payment of any obligations under this Series B Capital
Securities Guarantee or (iv) the Guarantor shall have given notice of its
election of the exercise of its right to extend the interest payment period
pursuant to Section 16.01 of the Indenture or with respect to certain other
debentures of the Guarantor and any such extension shall be continuing.

                                      -17-
<PAGE>
 
SECTION 6.2.     Ranking
                 -------

     This Series B Capital Securities Guarantee will constitute an unsecured
obligation of the Guarantor and will rank (i) subordinate and junior in right of
payment to Senior Indebtedness (as defined in the Indenture), to the same
extent and in the same manner that the Debentures are subordinated to Senior
Indebtedness pursuant to the Indenture, it being under stood that the terms of
Article XV of the Indenture shall apply to the obligations of the Guarantor
under this Series B Capital Securities Guarantee as if (x) such Article XV were
set forth herein in full and (y) such obligations were substituted for the term
"Securities" appearing in such Article XV, (ii) pari passu with the Debentures,
the Other Debentures and with the most senior preferred or preference stock now
or hereafter issued by the Guarantor and with any Other Guarantee (as defined
herein) and any Other Common Securities Guarantee and any guarantee now or
hereafter entered into by the Guarantor in respect of any preferred or
preference stock of any Affiliate of the Guarantor, and (iii) senior to the
Guarantor's common stock.

                                  ARTICLE VII
                                  TERMINATION

SECTION 7.1.     Termination
                 -----------

     This Series B Capital Securities Guarantee shall terminate (i) upon full
payment of the Redemption Price (as defined in the Declaration) of all Series B
Capital Securities, (ii) upon liquidation of the Issuer, the full payment of the
amounts payable in accordance with the Declaration or the distribution of the
Debentures to the Holders of all of the Series B Capital Securities or (iii)
upon exchange of all the Series B Capital Securities for the Series B Capital
Securities in the Exchange Offer and the execution and delivery of the Series B
Capital Securities Guarantee.  Notwithstanding the foregoing, this Series B
Capital Securities Guarantee will continue to be effective or will be
reinstated, as the case may be, if at any time any Holder must restore payment
of any sums paid under the Series B Capital Securities or under this Series B
Capital Securities Guarantee.


                                 ARTICLE VIII
                          COMPENSATION AND EXPENSES OF
                      CAPITAL SECURITIES GUARANTEE TRUSTEE

     The Guarantor covenants and agrees to pay to the Capital Securities
Guarantee Trustee from time to time, and the Capital Securities Guarantee
Trustee shall be entitled to, such compensation as shall be agreed to in writing
between the Guarantor and the Capital Securities Guarantee Trustee (which shall
not be limited by any provision of law in regard to the compensation of a
trustee of an express trust), and the Guarantor will pay or reimburse the
Capital Securities Guarantee Trustee upon its request for all reasonable
expenses, disburse-

                                      -18-
<PAGE>
 
ments and advances incurred or made by the Capital Securities Guarantee Trustee
in accordance with any of the provisions of this Capital Securities Guarantee
(including the reasonable compensation and the expenses and disbursements of its
counsel and of all persons not regularly in its employ) except any such expense,
disbursement or advance as may arise from its negligence or bad faith. The
Guarantor also covenants to indemnify the Capital Securities Guarantee Trustee
(and its officers, agents, directors and employees) for, and to hold it harmless
against, any and all loss, damage, claim, liability or expense including taxes
(other than taxes based on the income of the Capital Securities Guarantee
Trustee) incurred without negligence or bad faith on the part of the Capital
Securities Guarantee Trustee and arising out of or in connection with the
acceptance or administration of this guarantee, including the costs and expenses
of defending itself against any claim of liability in the premises. The
obligations of the Guarantor under this Article VIII to compensate and indemnify
the Capital Securities Guarantee Trustee and to pay or reimburse the Capital
Securities Guarantee Trustee for expenses, disbursements and advances shall be
secured by a lien prior to that of the Series B Capital Securities upon all
property and funds held or collected by the Capital Securities Guarantee Trustee
as such, except funds held in trust for the benefit of the holders of particular
Series B Capital Securities.

     The provisions of this Article shall survive the termination of this
Capital Securities Guarantee or the earlier resignation or removal of the
Capital Securities Guarantee Trustee.

                                  ARTICLE IX
                                INDEMNIFICATION

SECTION 9.1.     Exculpation
                 -----------

     (a)   No Indemnified Person shall be liable, responsible or accountable in
damages or otherwise to the Guarantor or any Covered Person for any loss, damage
or claim incurred by reason of any act or omission performed or omitted by such
Indemnified Person in good faith in accordance with this Series B Capital
Securities Guarantee and in a manner that such Indemnified Person reasonably
believed to be within the scope of the authority conferred on such Indemnified
Person by this Series B Capital Securities Guarantee or by law, except that an
Indemnified Person shall be liable for any such loss, damage or claim incurred
by reason of such Indemnified Person's negligence or willful misconduct with
respect to such acts or omissions.

     (b)   An Indemnified Person shall be fully protected in relying in good
faith upon the records of the Guarantor and upon such information, opinions,
reports or statements presented to the Guarantor by any Person as to matters the
Indemnified Person reasonably believes are within such other Person's
professional or expert competence, including information, opinions, reports or
statements as to the value and amount of the assets, liabilities, profits,
losses, or any other facts pertinent to the existence and amount of assets from
which Distributions to Holders might properly be paid.

                                      -19-
<PAGE>
 
SECTION 9.2.     Indemnification
                 ---------------

     The Guarantor agrees to indemnify each Indemnified Person for, and to hold
each Indemnified Person harmless against, any and all loss, liability, damage,
claim or expense incurred without negligence or bad faith on its part, arising
out of or in connection with the acceptance or administration of the trust or
trusts hereunder, including the costs and expenses (including reasonable legal
fees and expenses) of defending itself against, or investigating, any claim or
liability in connection with the exercise or performance of any of its powers or
duties hereunder.  The obligation to indemnify as set forth in this Section 9.2
shall survive the termination of this Series B Capital Securities Guarantee.

                                   ARTICLE X
                                 MISCELLANEOUS

SECTION 10.1.    Successors and Assigns
                 ----------------------

     All guarantees and agreements contained in this Series B Capital Securities
Guarantee shall bind the successors, assigns, receivers, trustees and
representatives of the Guarantor and shall inure to the benefit of the Holders
then outstanding.

SECTION 10.2.    Amendments
                 ----------

     Except with respect to any changes that do not materially adversely affect
the rights of Holders (in which case no consent of Holders will be required),
this Series B Capital Securities Guarantee may only be amended with the prior
approval of the Holders of a Majority in liquidation amount of the Securities
(including the stated amount that would be paid on redemption, liquidation or
otherwise, plus accrued and unpaid Distributions to the date upon which the
voting percentages are determined).  The provisions of the Declaration with
respect to consents to amendments thereof (whether at a meeting or otherwise)
shall apply to the giving of such approval.

SECTION 10.3.    Notices
                 -------

     All notices provided for in this Series B Capital Securities Guarantee
shall be in writing, duly signed by the party giving such notice, and shall be
delivered, telecopied or mailed by first class mail, as follows:

     (a)   If given to the Issuer, in care of the Administrative Trustee at the
Issuer's mailing address set forth below (or such other address as the Issuer
may give notice of to the Holders and the Capital Securities Guarantee Trustee):

                                      -20-
<PAGE>
 
           AFC Capital Trust I
           c/o Allmerica Financial Corporation
           440 Lincoln Street
           Worcester, Massachusetts  01653
           Attention:  Chief Financial Officer
           Telecopy:       (508) 852-7588

     (b)   If given to the Capital Securities Guarantee Trustee, at the Capital
Securities Guarantee Trustee's mailing address set forth below (or such other
address as the Capital Securities Guarantee Trustee may give notice of to the
Holders and the Issuer):

           The Chase Manhattan Bank
           Global Trust Services
           450 West 33rd Street, 15th Floor
           New York, New York 10001
           Attention:  Global Trust Services
           Telecopy:       (212) 946-8161
 
     (c)   If given to the Guarantor, at the Guarantor's mailing address set
forth below (or such other address as the Guarantor may give notice of to the
Holders of the Series B Capital Securities and the Capital Securities Guarantee
Trustee):

           Allmerica Financial Corporation
           440 Lincoln Street
           Worcester, Massachusetts  01653
           Attention:  Chief Financial Officer
           Telecopy:   (508) 852-7588

     (d)   If given to any Holder of Series B Capital Securities, at the address
set forth on the books and records of the Issuer.

     All such notices shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid except that if a notice or other document is refused delivery or
cannot be delivered because of a changed address of which no notice was given,
such notice or other document shall be deemed to have been delivered on the date
of such refusal or inability to deliver.

SECTION 10.4.    Exchange Offer
                 --------------

     In the event an Exchange Offer Registration Statement (as defined in the
Registration Rights Agreement) becomes effective and the Issuer issues any
Series B Capital Securities in the Exchange Offer, the Guarantor will enter into
a new capital securities guarantee agree- 

                                      -21-
<PAGE>
 
ment, in substantially the same form as this Series B Capital Securities
Guarantee, with respect to the Series B Capital Securities.

SECTION 10.5.    Benefit
                 -------

     This Series B Capital Securities Guarantee is solely for the benefit of the
Holders and, subject to Section 3.1(a), is not separately transferable from the
Series B Capital Securities.

SECTION 10.6.    Governing Law
                 -------------

     THIS Series B CAPITAL SECURITIES GUARANTEE SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK,
WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES THEREOF.

                                      -22-
<PAGE>
 
   THIS Series B CAPITAL SECURITIES GUARANTEE is executed as of the day and year
first above written.

                          ALLMERICA FINANCIAL CORPORATION, as 
                          Guarantor



                          By: 
                              ---------------------------------
                              Name:  
                              Title: 
 


                          THE CHASE MANHATTAN BANK, as Capital
                          Securities Guarantee Trustee



                          By: 
                              ---------------------------------
                              Name: 
                              Title: 

<PAGE>
 
                                                                     Exhibit 5.1

                         [LETTERHEAD OF ROPES & GRAY]

                                                     June 16, 1997


Allmerica Financial Corporation
440 Lincoln Street
Worcester, Massachusetts 01653

         Re:      Allmerica Financial Corporation
                  AFC Capital Trust I
                  Registration Statement on Form S-4
                  ----------------------------------

Ladies and Gentlemen:

         We have acted as counsel to Allmerica Financial Corporation, a Delaware
corporation (the "Company") and AFC Capital Trust I, a statutory business trust
organized under the Business Trust Act (the "Delaware Act") of the State of
Delaware (Chapter 38, Title 12 of the Delaware Code, 12 Del. C. (S)(S) 3801, et
seq.) (the "Trust"), in connection with a Registration Statement on Form S-4
(the "Registration Statement") to be filed by the Company and the Trust with the
Securities Exchange Commission on or about June 16, 1997 relating to: (i) the
proposed issuance by the Trust of $300,000,000 aggregate Liquidation Amount of
the Trust's 8.207% Series B Capital Securities (the "New Capital Securities")
registered under the Securities Act of 1933, as amended (the "Securities Act"),
in exchange for up to $300,000,000 aggregate Liquidation Amount of the Trust's
outstanding 8.207% Series A Capital Securities (the "Old Capital Securities");
(ii) the proposed issuance by the Company to the Trust, in an aggregate
principal amount corresponding to the aggregate Liquidation Amount of the New
Capital Securities, of the Company's 8.207% Series B Junior Subordinated
Deferrable Interest Debentures due February 3, 2027 (the "New Junior
Subordinated Debentures") registered under the Securities Act in exchange for a
comparable aggregate principal amount of the Company's outstanding 8.207% Series
A Junior Subordinated Deferrable Interest Debentures due February 3, 2027 (the
"Old Junior Subordinated Debentures"); and (iii) the Company's guarantee of the
New Capital Securities (the "New Guarantee") registered under the Securities Act
in exchange for the Company's guarantee of the Old Capital Securities (the "Old
Guarantee").
<PAGE>
 
Allmerica Financial Corporation       -2-                          June 16,1997 


         The New Capital Securities will be issued under and Amended and
Restated Declaration of Trust for the Trust, dated February 3, 1997 (the
"Amended Declaration"), among the Company, as sponsor, the Chase Manhattan Bank,
as property trustee, Chase Manhattan Bank Delaware, as Delaware trustee, and the
Administrative Trustees named therein, while the New Junior Subordinated
Debentures will be issued under an Indenture, dated as of February 3, 1997 (the
"Indenture"), between the Company and The Chase Manhattan Bank, as indenture
trustee.

         We have examined and relied upon the information set forth in the
Registration Statement and such other documents and records as we have deemed
necessary. In addition, as to questions of fact material to our opinions, we
have relied upon certificates of officers of the Company, the Administrative
Trustees of the Trust and public officials.

         In the course of our examination, we have assumed the legal capacity of
all natural persons, the genuineness of all signatures, the authenticity of all
documents submitted to us as originals, the conformity to original documents of
all documents submitted to us as certified or photostatic copies and the
authenticity of the originals of such latter documents. In making our
examination of documents executed by parties other than the Company or the
Trust, we have assumed that such parties had the power, corporate or other, to
enter into and perform all obligations thereunder and have also assumed the due
authorization by all requisite action, corporate or other, and execution and
delivery by such parties of such documents and the validity and binding effect
thereof on such parties.

         We express no opinion as to the laws of any jurisdiction other than
those of The Commonwealth of Massachusetts, the General Corporation Law of the
State of Delaware and the federal laws of the United States of America. We call
your attention to the fact that each of the Indenture, the New Junior
Subordinated Debentures and the New Guarantee provides that it is to be governed
by the laws of the State of New York. For purposes of the opinion provided
herein, we have assumed with your permission that the Indenture, the New Junior
Subordinated Debentures and the New Guarantee would be governed by and construed
in accordance with the domestic substantive laws of The Commonwealth of
Massachusetts without giving effect to any choice of law or conflict of laws
rule or provision that would cause the application of the domestic substantive
laws of any other jurisdiction.

         Based upon the foregoing, we are of the opinion that:

         1. The New Junior Subordinated Debentures have been duly authorized by
all requisite corporate action of the Company and, when executed and
authenticated in the manner provided for in the Indenture and delivered against
surrender and cancellation of a like aggregate principal amount of Old Junior
Subordinated Debentures as contemplated in the Registration Rights Agreement,
dated as of February 3, 1997, among the Company, the Trust and the Initial
Purchasers named therein (the "Registration Rights Agreement"), the New Junior
Subordinated Debentures will constitute valid and binding obligations of the
Company

<PAGE>
 
Allmerica Financial Corporation      - 3 -                          June 16,1997

entitled to the benefits of the Indenture and enforceable against the Company in
accordance with their terms, except as enforcement thereof may be limited by
bankruptcy, insolvency, reorganization, moratorium or other similar laws
relating to or affecting creditors' rights generally or by general equitable
principles (regardless of whether considered in a proceeding in equity or at
law).

         2. The New Guarantee has been duly authorized by all requisite
corporate action of the Company and, when executed and delivered to The Chase
Manhattan Bank, as guarantee trustee, as contemplated in the Registration Rights
Agreement, the New Guarantee will constitute a valid and binding agreement of
the Company, enforceable against the Company in accordance with its terms,
except as enforcement thereof may be limited by bankruptcy, insolvency,
reorganization, moratorium or other similar laws relating to or affecting
creditors' rights generally or by general equitable principles (regardless of
whether considered in a proceeding in equity or at law).

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to our firm under the caption "Legal
Matters" contained in the Prospectus included therein.

         It is understood that this opinion is to be used only in connection
with the Exchange Offer while the Registration Statement is in effect.

                                         Very truly yours,

                                         /s/ Ropes & Gray

                                         Ropes & Gray



<PAGE>
 
                   [LETTERHEAD OF RICHARDS, LAYTON & FINGER]

                                                                     Exhibit 5.2

                                 June 16, 1997



AFC Capital Trust I
c/o Allmerica Financial Corporation
440 Lincoln Street
Worcester, Massachusetts 01653

     Re:  AFC Capital Trust I
          -------------------

Ladies and Gentlemen:

     We have acted as special Delaware counsel for Allmerica Financial
Corporation, a Delaware corporation (the "Company"), and AFC Capital Trust I, a
Delaware business trust (the "Trust"), in connection with the matters set forth
herein.  At your request, this opinion is being furnished to you.

     For purposes of giving the opinions hereinafter set forth, our examination
of documents has been limited to the examination of originals or copies of the
following:

     (a) The Certificate of Trust of the Trust, dated January 24, 1997, as filed
with the office of the Secretary of State of the State of Delaware (the
"Secretary of State") on January 24, 1997;

     (b) The Declaration of Trust of the Trust, dated as of January 24, 1997
between the Company and the trustees of the Trust named therein, as amended and
restated by
<PAGE>
 
AFC Capital Trust I
June 16, 1997
Page 2

the Amended and Restated Declaration of Trust of the Trust, dated as of February
3, 1997 (the "Declaration of Trust"), among the Company, the trustees of the
Trust named therein (collectively, the "Trustees") and the holders, from time to
time, of the undivided beneficial interests in the assets of the Trust;

     (c) The Registration Statement (the "Registration Statement") on Form S-4,
including a preliminary prospectus with respect to the Trust (the "Prospectus")
relating to the 8.207% Series B Capital Securities of the Trust representing
preferred undivided beneficial interests in the assets of the Trust (each, a
"Capital Security" and collectively, the "Capital Securities"), to be filed by
the Company and the Trust with the Securities and Exchange Commission on or
about June 16, 1997;

     (d) A Certificate of Good Standing for the Trust, dated June 16, 1997,
obtained from the Secretary of State.

     Initially capitalized terms used herein and not otherwise defined are used
as defined in the Declaration of Trust.

     For purposes of this opinion, we have not reviewed any documents other than
the documents listed in paragraphs (a) through (d) above.  In particular, we
have not reviewed any document (other than the documents listed in paragraphs
(a) through (d) above) that is referred to in or incorporated by reference into
the documents reviewed by us.  We have assumed that there exists no provision in
any document that we have not reviewed that is inconsistent with the opinions
stated herein.  We have conducted no independent factual investigation of our
own but rather have relied solely upon the foregoing documents, the statements
and information set forth therein and the additional matters recited or assumed
herein, all of which we have assumed to be true, complete and accurate in all
material respects.

     With respect to all documents examined by us, we have assumed (i) the
authenticity of all documents submitted to us as authentic originals, (ii) the
conformity with the originals of all documents submitted to us as copies or
forms, and (iii) the genuineness of all signatures.

     For purposes of this opinion, we have assumed (i) that the Declaration of
Trust constitutes the entire agreement among the parties thereto with respect to
the subject matter thereof, including with respect to the creation, operation
and termination of the Trust, and that the Declaration of Trust and the
Certificate of Trust are in full force and effect and have not been amended,
(ii) except to the extent provided in paragraph 1 below, the due organization or
due formation, as the case may be, and valid existence in good standing of each
party to the documents examined by us under the laws of the jurisdiction
governing its creation, organization
<PAGE>
 
AFC Capital Trust I
June 16, 1997
Page 3

or formation, (iii) the legal capacity of natural persons who are parties to
the documents examined by us, (iv) that each of the parties to the documents
examined by us has the power and authority to execute and deliver, and to
perform its obligations under, such documents, (v) the due authorization,
execution and delivery by all parties thereto of all documents examined by us,
(vi) the receipt by each Person to whom a Capital Security is to be issued by
the Trust (collectively, the "Capital Security Holders") of a certificate for
such Capital Security in the form prescribed by the Declaration of Trust and the
payment for such Capital Security, in accordance with the Declaration of Trust
and the Registration Statement, and (vii) that the Capital Securities are issued
and sold to the Capital Security Holders in accordance with the Declaration of
Trust and the Registration Statement.  We have not participated in the
preparation of the Registration Statement and assume no responsibility for its
contents.

     This opinion is limited to the laws of the State of Delaware (excluding the
securities laws of the State of Delaware), and we have not considered and
express no opinion on the laws of any other jurisdiction, including federal laws
and rules and regulations relating thereto.  Our opinions are rendered only with
respect to Delaware laws and rules, regulations and orders thereunder which are
currently in effect.

     Based upon the foregoing, and upon our examination of such questions of law
and statutes of the State of Delaware as we have considered necessary or
appropriate, and subject to the assumptions, qualifications, limitations and
exceptions set forth herein, we are of the opinion that:

     1.  The Trust has been duly created and is validly existing in good
standing as a business trust under the Business Trust Act.

     2.  The Capital Securities of the Trust will represent valid and, subject
to the qualifications set forth in paragraph 3 below, fully paid and
nonassessable undivided beneficial interests in the assets of the Trust.

     3.  The Capital Security Holders, as beneficial owners of the Trust, will
be entitled to the same limitation of personal liability extended to
stockholders of private corporations for profit organized under the General
Corporation Law of the State of Delaware. We note that the Capital Security
Holders may be obligated to make payments as set forth in the Declaration of
Trust.

     We consent to the filing of this opinion with the Securities and Exchange
Commission as an exhibit to the Registration Statement.  We hereby consent to
the use of our name under the heading "Legal Matters" in the Prospectus.  In
giving the foregoing consents, we do not thereby admit that we come within the
category of persons whose consent is required under Section 7 of the Securities
Act of 1933, as amended, or the rules and regulations of the
<PAGE>
 
AFC Capital Trust I
June 16, 1997
Page 4

Securities and Exchange Commission thereunder.  Except as stated above, without
our prior written consent, this opinion may not be furnished or quoted to, or
relied upon by, any other person for any purpose.



                                       Very truly yours,
CDK


                                       /s/ Richards, Layton & Finger

<PAGE>
 
                                                                       Exhibit 8

                       [LETTERHEAD OF LATHAM & WATKINS]
                                   
                                 June 16, 1997

Allmerica Financial 
440 Lincoln Street
Worcester, Massachusetts 01653

        Re: Allmerica Financial Corporation
            AFC Capital Trust I
            Registration Statement on Form S-4
            ----------------------------------

Ladies and Gentlemen:

     We have acted as special tax counsel to Allmerica Financial Corporation, a 
Delaware corporation (the "Company") and AFC Capital Trust I, a statutory 
business trust organized under the Business Trust Act (the "Delaware Act") of 
the State of Delaware (Chapter 38, Title 12 of the Delaware Code, 12 Del. C. 
/S//S/ 3801, et seq.) (the "Trust"), in connection with a Registration Statement
on Form S-4 (the "Registration Statement") to be filed by the Company and the 
Trust with the Securities Exchange Commission on or about June 16, 1997 relating
to: (i) the proposed issuance by the Trust of $300,000,000 aggregate Liquidation
Amount of the Trust's 8.207% Series B Capital Securities (the "New Capital
Securities") registered under the Securities Act of 1933, as amended (the
"Securities Act"), in exchange for up to $300,000,000 aggregate Liquidation
Amount of Trust's outstanding 8.207% Series A Capital Securities (the "Old
Capital Securities"); (ii) the proposed issuance by the Company to the Trust, in
an aggregate principal amount corresponding to the aggregate Liquidation Amount
of the New Capital Securities, of the Company's 8.207% Series B Junior
Subordinated Deferrable Interest Debentures due February 3, 2027 (the "New
Junior Subordinated Debentures") registered under the Securities Act in exchange
for a comparable aggregate principal amount of the Company's outstanding 8.207%

<PAGE>
 
Allmerica Financial
June 16, 1997
Page 2

Series A Junior Subordinated Deferrable Interest Debentures due February 3, 2027
(the "Old Junior Subordinated Debentures"); and (iii) the Company's guarantee of
the New Capital Securities (the "New Guarantee") registered under the Securities
Act in exchange for the Company's guarantee of the Old Capital Securities (the 
"Old Guarantee").

         In rendering our opinion, we have examined the Amended and Restated 
Declaration of Trust for the Trust, dated February 3, 1997 (the "Amended 
Declaration") and have assumed that the affairs of the Trust will be conducted 
in accordance with the Amended Declaration.

         We hereby confirm the opinions described under the caption "Certain
Federal Income Tax Considerations" in the prospectus (the "Prospectus") that is
part of the Registration Statement.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to our firm under the caption
"Certain Federal Income Tax Considerations" and "Legal Matters" contained in the
Prospectus included therein.


                                          Very truly yours,

                                          /s/ Latham & Watkins

                                          LANTHAM & WATKINS

<PAGE>
 
                                                                   EXHIBIT 23.1
 
                      CONSENT OF INDEPENDENT ACCOUNTANTS
 
We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-4 of Allmerica
Financial Corporation and AFC Capital Trust I of our report dated February 3,
1997, except as to Note 1, which is as of February 19, 1997, and Note 2, which
is as of April 14, 1997, which appears on the Allmerica Financial Corporation
Annual Report on Form 10-K/A for the year ended December 31, 1996. We also
consent to the incorporation by reference of our report on the Financial
Statement Schedules, which appears on the Allmerica Financial Corporation
Annual Report on Form 10-K/A for the year ended December 31, 1996. We also
consent to the references to us under the headings "Experts" and "Selected
Consolidated Financial Data" in such Prospectus. However, it should be noted
that Price Waterhouse LLP has not prepared or certified such "Selected
Consolidated Financial Data."
 
/s/ Price Waterhouse LLP
 
Price Waterhouse LLP
Boston, Massachusetts
June 16, 1997

<PAGE>
 
                                                                    Exhibit 25.1

- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D. C.  20549

                           -------------------------

                                   FORM  T-1

                            STATEMENT OF ELIGIBILITY
                    UNDER THE TRUST INDENTURE ACT OF 1939 OF
                   A CORPORATION DESIGNATED TO ACT AS TRUSTEE

                  -------------------------------------------

              CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF
                A TRUSTEE PURSUANT TO SECTION 305(b)(2) 
                                                        --------

                    ----------------------------------------

                            THE CHASE MANHATTAN BANK
              (Exact name of trustee as specified in its charter)


New York                                                             13-4994650
(State of incorporation                                        (I.R.S. employer
if not a national bank)                                     identification No.)

270 Park Avenue
New York, New York                                                        10017
(Address of principal executive offices)                             (Zip Code)

                               William H. McDavid
                                General Counsel
                                270 Park Avenue
                            New York, New York 10017
                              Tel:  (212) 270-2611
           (Name, address and telephone number of agent for service)

                 ---------------------------------------------
                        Allmerica Financial Corporation
              (Exact name of obligor as specified in its charter)

Delaware                                                             04-3263626
(State or other jurisdiction of                                (I.R.S. employer
incorporation or organization)                              identification No.)

440 Lincoln Street
Worcester, Massachusetts                                                  01653
(Address of principal executive offices)                             (Zip Code)

                -----------------------------------------------
         Series B Junior Subordinated Deferrable Interest Debentures of
                        Allmerica Financial Corporation
                      (Title of the indenture securities)
         -------------------------------------------------------------
<PAGE>
 
                                    GENERAL

Item 1.  General Information.

         Furnish the following information as to the trustee:

         (a) Name and address of each examining or supervising authority to
             which it is subject.
 
             New York State Banking Department, State House, Albany, New York
             12110.

             Board of Governors of the Federal Reserve System, Washington, D.C.,
             20551
 
             Federal Reserve Bank of New York, District No. 2, 33 Liberty
             Street, New York, N.Y.

             Federal Deposit Insurance Corporation, Washington, D.C., 20429.


         (b) Whether it is authorized to exercise corporate trust powers.

             Yes.


Item 2.  Affiliations with the Obligor.

         If the obligor is an affiliate of the trustee, describe each such
         affiliation.

         None.

                                      -2-
<PAGE>
 
Item 16. List of Exhibits
 
         List below all exhibits filed as a part of this Statement of 
         Eligibility.

         1.  A copy of the Articles of Association of the Trustee as now in
effect, including the Organization Certificate and the Certificates of Amendment
dated February 17, 1969, August 31, 1977, December 31, 1980, September 9, 1982,
February 28, 1985, December 2, 1991 and July 10, 1996 (see Exhibit 1 to Form T-1
filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

         2.  A copy of the Certificate of Authority of the Trustee to Commence
Business (see Exhibit 2 to Form T-1 filed in connection with Registration
Statement No. 33-50010, which is incorporated by reference.  On July 14, 1996,
in connection with the merger of Chemical Bank and The Chase Manhattan Bank
(National Association), Chemical Bank, the surviving corporation, was renamed
The Chase Manhattan Bank).

         3.  None, authorization to exercise corporate trust powers being
contained in the documents identified above as Exhibits 1 and 2.

         4.  A copy of the existing By-Laws of the Trustee (see Exhibit 4 to
Form T-1 filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

         5.  Not applicable.

         6.  The consent of the Trustee required by Section 321(b) of the Act
(see Exhibit 6 to Form T-1 filed in connection with Registration Statement No.
33-50010, which is incorporated by reference. On July 14, 1996, in connection
with the merger of Chemical Bank and The Chase Manhattan Bank (National
Association), Chemical Bank, the surviving corporation, was renamed The Chase
Manhattan Bank).

         7.  A copy of the latest report of condition of the Trustee, published
pursuant to law or the requirements of its supervising or examining authority.

         8.  Not applicable.

         9.  Not applicable.

                                   SIGNATURE

      Pursuant to the requirements of the Trust Indenture Act of 1939 the
Trustee, The Chase Manhattan Bank, a corporation organized and existing under
the laws of the State of New York, has duly caused this statement of eligibility
to be signed on its behalf by the undersigned, thereunto duly authorized, all in
the City of New York and State of New York, on the 10th day of June, 1997.

                                   THE CHASE MANHATTAN BANK

 
                                   By /s/ H. Victor Evans, Jr.
                                     -------------------------------------------
                                          H. Victor Evans, Jr.
                                          Second Vice President

                                      -3-
<PAGE>
 
                              Exhibit 7 to Form T-1


                                Bank Call Notice

                             RESERVE DISTRICT NO. 2
                       CONSOLIDATED REPORT OF CONDITION OF

                            The Chase Manhattan Bank
                  of 270 Park Avenue, New York, New York 10017
                     and Foreign and Domestic Subsidiaries,
                     a member of the Federal Reserve System,

                   at the close of business March 31, 1997, in
        accordance with a call made by the Federal Reserve Bank of this
        District pursuant to the provisions of the Federal Reserve Act.

<TABLE> 
<CAPTION> 

                                                                             Dollar Amounts
                           ASSETS                                             in Millions

<S>                                                                               <C> 
Cash and balances due from depository institutions:
      Noninterest-bearing balances and
      currency and coin ...............................................           $  11,721
      Interest-bearing balances .......................................               3,473
Securities:  ..........................................................
Held to maturity securities............................................               2,965
Available for sale securities..........................................              35,903
Federal Funds sold and securities purchased under
      agreements to resell ............................................              24,025
Loans and lease financing receivables:
      Loans and leases, net of unearned income.........................            $123,957
      Less: Allowance for loan and lease losses........................               2,853
      Less: Allocated transfer risk reserve ...........................                  13
                                                                                  ---------
      Loans and leases, net of unearned income,
      allowance, and reserve ..........................................             121,091
Trading Assets ........................................................              54,340
Premises and fixed assets (including capitalized
      leases)..........................................................               2,875
Other real estate owned ...............................................                 302
Investments in unconsolidated subsidiaries and
      associated companies.............................................                 139
Customers' liability to this bank on acceptances
      outstanding .....................................................               2,270
Intangible assets .....................................................               1,535
Other assets ..........................................................              10,283
                                                                                     ------
TOTAL ASSETS ..........................................................            $270,922
                                                                                  =========
</TABLE> 

                                      - 4 -
<PAGE>
 
                                   LIABILITIES

<TABLE> 
<CAPTION> 

<S>                                                                                 <C>
Deposits
      In domestic offices ..............................................            $84,776
      Noninterest-bearing ..............................................            $32,492
      Interest-bearing .................................................             52,284
                                                                                 ----------
      In foreign offices, Edge and Agreement subsidiaries,
      and IBF's ........................................................             69,171
      Noninterest-bearing ..............................................            $ 4,181
      Interest-bearing .................................................             64,990

Federal funds purchased and securities sold under agree-
ments to repurchase ....................................................             32,885
Demand notes issued to the U.S. Treasury ...............................              1,000
Trading liabilities ....................................................             42,538

Other Borrowed money (includes mortgage indebtedness
      and obligations under calitalized leases):
      With a remaining maturity of one year or less ....................              4,431
      With a remaining maturity of more than one year ..................                466
Bank's liability on acceptances executed and outstanding................              2,270
Subordinated notes and debentures ......................................              5,911
Other liabilities ......................................................             11,575

TOTAL LIABILITIES ......................................................            255,023
                                                                                 ----------

                                 EQUITY CAPITAL

Perpetual Preferred stock and related surplus                                             0
Common stock ...........................................................              1,211
Surplus  (exclude all surplus related to preferred stock)...............             10,283
Undivided profits and capital reserves .................................              4,941
Net unrealized holding gains (Losses)
on available-for-sale securities .......................................               (552)
Cumulative foreign currency translation adjustments ....................                 16

TOTAL EQUITY CAPITAL ...................................................             15,899
                                                                                 ----------
TOTAL LIABILITIES, LIMITED-LIFE PREFERRED
      STOCK AND EQUITY CAPITAL ......................................              $270,922
                                                                                 ==========
</TABLE> 

I, Joseph L. Sclafani, E.V.P. & Controller of the above-named bank, do hereby
declare that this Report of Condition has been prepared in conformance with the
instructions issued by the appropriate Federal regulatory authority and is true
to the best of my knowledge and belief.

                                     JOSEPH L. SCLAFANI

We, the undersigned directors, attest to the correctness of this Report of
Condition and declare that it has been examined by us, and to the best of our
knowledge and belief has been prepared in conformance with the instructions
issued by the appropriate Federal regulatory authority and is true and correct.

                                     WALTER V. SHIPLEY        )
                                     THOMAS G. LABRECQUE      )  DIRECTORS
                                     WILLIAM B. HARRISON, JR. )


                                     - 5 -

<PAGE>
 
                                                                    Exhibit 25.2

- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D. C.  20549

                           -------------------------

                                   FORM  T-1

                            STATEMENT OF ELIGIBILITY
                    UNDER THE TRUST INDENTURE ACT OF 1939 OF
                   A CORPORATION DESIGNATED TO ACT AS TRUSTEE

                  -------------------------------------------

              CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF
                A TRUSTEE PURSUANT TO SECTION 305(b)(2) 
                                                        --------

                    ----------------------------------------

                            THE CHASE MANHATTAN BANK
              (Exact name of trustee as specified in its charter)


New York                                                             13-4994650
(State of incorporation                                        (I.R.S. employer
if not a national bank)                                     identification No.)

270 Park Avenue
New York, New York                                                        10017
(Address of principal executive offices)                             (Zip Code)

                               William H. McDavid
                                General Counsel
                                270 Park Avenue
                            New York, New York 10017
                              Tel:  (212) 270-2611
           (Name, address and telephone number of agent for service)

                 ---------------------------------------------
                              AFC Capital Trust I
              (Exact name of obligor as specified in its charter)

Delaware                                                             04-6828272
(State or other jurisdiction of                                (I.R.S. employer
incorporation or organization)                              identification No.)

440 Lincoln Street
Worcester, Massachusetts                                                  01653
(Address of principal executive offices)                             (Zip Code)

                -----------------------------------------------
              Series B Capital Securities of AFC Capital Trust I
                      (Title of the indenture securities)
         -------------------------------------------------------------
<PAGE>
 
                                    GENERAL

Item 1.  General Information.

         Furnish the following information as to the trustee:

         (a) Name and address of each examining or supervising authority to
             which it is subject.
 
             New York State Banking Department, State House, Albany, New York
             12110.

             Board of Governors of the Federal Reserve System, Washington, D.C.,
             20551
 
             Federal Reserve Bank of New York, District No. 2, 33 Liberty
             Street, New York, N.Y.

             Federal Deposit Insurance Corporation, Washington, D.C., 20429.


         (b) Whether it is authorized to exercise corporate trust powers.

             Yes.


Item 2.  Affiliations with the Obligor.

         If the obligor is an affiliate of the trustee, describe each such
         affiliation.

         None.

                                      -2-
<PAGE>
 
Item 16. List of Exhibits
 
         List below all exhibits filed as a part of this Statement of 
         Eligibility.

         1.  A copy of the Articles of Association of the Trustee as now in
effect, including the Organization Certificate and the Certificates of Amendment
dated February 17, 1969, August 31, 1977, December 31, 1980, September 9, 1982,
February 28, 1985, December 2, 1991 and July 10, 1996 (see Exhibit 1 to Form T-1
filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

         2.  A copy of the Certificate of Authority of the Trustee to Commence
Business (see Exhibit 2 to Form T-1 filed in connection with Registration
Statement No. 33-50010, which is incorporated by reference.  On July 14, 1996,
in connection with the merger of Chemical Bank and The Chase Manhattan Bank
(National Association), Chemical Bank, the surviving corporation, was renamed
The Chase Manhattan Bank).

         3.  None, authorization to exercise corporate trust powers being
contained in the documents identified above as Exhibits 1 and 2.

         4.  A copy of the existing By-Laws of the Trustee (see Exhibit 4 to
Form T-1 filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

         5.  Not applicable.

         6.  The consent of the Trustee required by Section 321(b) of the Act
(see Exhibit 6 to Form T-1 filed in connection with Registration Statement No.
33-50010, which is incorporated by reference. On July 14, 1996, in connection
with the merger of Chemical Bank and The Chase Manhattan Bank (National
Association), Chemical Bank, the surviving corporation, was renamed The Chase
Manhattan Bank).

         7.  A copy of the latest report of condition of the Trustee, published
pursuant to law or the requirements of its supervising or examining authority.

         8.  Not applicable.

         9.  Not applicable.

                                   SIGNATURE

      Pursuant to the requirements of the Trust Indenture Act of 1939 the
Trustee, The Chase Manhattan Bank, a corporation organized and existing under
the laws of the State of New York, has duly caused this statement of eligibility
to be signed on its behalf by the undersigned, thereunto duly authorized, all in
the City of New York and State of New York, on the 10th day of June, 1997.

                                   THE CHASE MANHATTAN BANK

 
                                   By /s/ H. Victor Evans, Jr.
                                     -------------------------------------------
                                          H. Victor Evans, Jr.
                                          Second Vice President

                                      -3-
<PAGE>
 
                              Exhibit 7 to Form T-1


                                Bank Call Notice

                             RESERVE DISTRICT NO. 2
                       CONSOLIDATED REPORT OF CONDITION OF

                            The Chase Manhattan Bank
                  of 270 Park Avenue, New York, New York 10017
                     and Foreign and Domestic Subsidiaries,
                     a member of the Federal Reserve System,

                   at the close of business March 31, 1997, in
        accordance with a call made by the Federal Reserve Bank of this
        District pursuant to the provisions of the Federal Reserve Act.

<TABLE> 
<CAPTION> 

                                                                             Dollar Amounts
                           ASSETS                                             in Millions

<S>                                                                               <C> 
Cash and balances due from depository institutions:
      Noninterest-bearing balances and
      currency and coin ...............................................           $  11,721
      Interest-bearing balances .......................................               3,473
Securities:  ..........................................................
Held to maturity securities............................................               2,965
Available for sale securities..........................................              35,903
Federal Funds sold and securities purchased under
      agreements to resell ............................................              24,025
Loans and lease financing receivables:
      Loans and leases, net of unearned income        $123,957
      Less: Allowance for loan and lease losses          2,853
      Less: Allocated transfer risk reserve .........       13
                                                      --------
      Loans and leases, net of unearned income,
      allowance, and reserve ..........................................             121,091
Trading Assets ........................................................              54,340
Premises and fixed assets (including capitalized
      leases)..........................................................               2,875
Other real estate owned ...............................................                 302
Investments in unconsolidated subsidiaries and
      associated companies.............................................                 139
Customers' liability to this bank on acceptances
      outstanding .....................................................               2,270
Intangible assets .....................................................               1,535
Other assets ..........................................................              10,283
                                                                                     ------
TOTAL ASSETS ..........................................................             $270,922
                                                                                  ==========
</TABLE> 

                                      - 4 -
<PAGE>
 
                                   LIABILITIES

<TABLE> 
<CAPTION> 

<S>                                                                                 <C>
Deposits
      In domestic offices ..............................................            $84,776
      Noninterest-bearing .......................................$32,492
      Interest-bearing ...........................................52,284
                                                                 -------
      In foreign offices, Edge and Agreement subsidiaries,
      and IBF's ........................................................             69,171
      Noninterest-bearing .......................................$ 4,181
      Interest-bearing ...........................................64,990

Federal funds purchased and securities sold under agree-
ments to repurchase ....................................................             32,885
Demand notes issued to the U.S. Treasury ...............................              1,000
Trading liabilities ....................................................             42,538

Other Borrowed money (includes mortgage indebtedness
      and obligations under calitalized leases):
      With a remaining maturity of one year or less ....................              4,431
      With a remaining maturity of more than one year ..................                466
Bank's liability on acceptances executed and outstanding................              2,270
Subordinated notes and debentures ......................................              5,911
Other liabilities ......................................................             11,575

TOTAL LIABILITIES ......................................................            255,023
                                                                                 ----------

                                 EQUITY CAPITAL

Perpetual Preferred stock and related surplus                                             0
Common stock ...........................................................              1,211
Surplus  (exclude all surplus related to preferred stock)...............             10,283
Undivided profits and capital reserves .................................              4,941
Net unrealized holding gains (Losses)
on available-for-sale securities .......................................               (552)
Cumulative foreign currency translation adjustments ....................                 16

TOTAL EQUITY CAPITAL ...................................................             15,899
                                                                                 ----------
TOTAL LIABILITIES, LIMITED-LIFE PREFERRED
      STOCK AND EQUITY CAPITAL ......................................              $270,922
                                                                                 ==========
</TABLE> 

I, Joseph L. Sclafani, E.V.P. & Controller of the above-named bank, do hereby
declare that this Report of Condition has been prepared in conformance with the
instructions issued by the appropriate Federal regulatory authority and is true
to the best of my knowledge and belief.

                                     JOSEPH L. SCLAFANI

We, the undersigned directors, attest to the correctness of this Report of
Condition and declare that it has been examined by us, and to the best of our
knowledge and belief has been prepared in conformance with the instructions
issued by the appropriate Federal regulatory authority and is true and correct.

                                     WALTER V. SHIPLEY        )
                                     THOMAS G. LABRECQUE      )  DIRECTORS
                                     WILLIAM B. HARRISON, JR. )


                                     - 5 -

<PAGE>
 
                                                                    Exhibit 25.3

- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D. C.  20549

                           -------------------------

                                   FORM  T-1

                            STATEMENT OF ELIGIBILITY
                    UNDER THE TRUST INDENTURE ACT OF 1939 OF
                   A CORPORATION DESIGNATED TO ACT AS TRUSTEE

                  -------------------------------------------

              CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF
                A TRUSTEE PURSUANT TO SECTION 305(b)(2) 
                                                        --------

                    ----------------------------------------

                            THE CHASE MANHATTAN BANK
              (Exact name of trustee as specified in its charter)


New York                                                             13-4994650
(State of incorporation                                        (I.R.S. employer
if not a national bank)                                     identification No.)

270 Park Avenue
New York, New York                                                        10017
(Address of principal executive offices)                             (Zip Code)

                               William H. McDavid
                                General Counsel
                                270 Park Avenue
                            New York, New York 10017
                              Tel:  (212) 270-2611
           (Name, address and telephone number of agent for service)

                 ---------------------------------------------
                              AFC Capital Trust I
              (Exact name of obligor as specified in its charter)

Delaware                                                             04-6828272
(State or other jurisdiction of                                (I.R.S. employer
incorporation or organization)                              identification No.)

440 Lincoln Street
Worcester, Massachusetts                                                  01653
(Address of principal executive offices)                             (Zip Code)

                -----------------------------------------------
           Allmerica Financial Corporation Guarantee with respect to
              Series B Capital Securities of AFC Capital Trust I
                      (Title of the indenture securities)
         -------------------------------------------------------------
<PAGE>
 
                                    GENERAL

Item 1.  General Information.

         Furnish the following information as to the trustee:

         (a) Name and address of each examining or supervising authority to
             which it is subject.
 
             New York State Banking Department, State House, Albany, New York
             12110.

             Board of Governors of the Federal Reserve System, Washington, D.C.,
             20551
 
             Federal Reserve Bank of New York, District No. 2, 33 Liberty
             Street, New York, N.Y.

             Federal Deposit Insurance Corporation, Washington, D.C., 20429.


         (b) Whether it is authorized to exercise corporate trust powers.

             Yes.


Item 2.  Affiliations with the Obligor.

         If the obligor is an affiliate of the trustee, describe each such
         affiliation.

         None.

                                      -2-
<PAGE>
 
Item 16. List of Exhibits
 
         List below all exhibits filed as a part of this Statement of 
         Eligibility.

         1.  A copy of the Articles of Association of the Trustee as now in
effect, including the Organization Certificate and the Certificates of Amendment
dated February 17, 1969, August 31, 1977, December 31, 1980, September 9, 1982,
February 28, 1985, December 2, 1991 and July 10, 1996 (see Exhibit 1 to Form T-1
filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

         2.  A copy of the Certificate of Authority of the Trustee to Commence
Business (see Exhibit 2 to Form T-1 filed in connection with Registration
Statement No. 33-50010, which is incorporated by reference.  On July 14, 1996,
in connection with the merger of Chemical Bank and The Chase Manhattan Bank
(National Association), Chemical Bank, the surviving corporation, was renamed
The Chase Manhattan Bank).

         3.  None, authorization to exercise corporate trust powers being
contained in the documents identified above as Exhibits 1 and 2.

         4.  A copy of the existing By-Laws of the Trustee (see Exhibit 4 to
Form T-1 filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

         5.  Not applicable.

         6.  The consent of the Trustee required by Section 321(b) of the Act
(see Exhibit 6 to Form T-1 filed in connection with Registration Statement No.
33-50010, which is incorporated by reference. On July 14, 1996, in connection
with the merger of Chemical Bank and The Chase Manhattan Bank (National
Association), Chemical Bank, the surviving corporation, was renamed The Chase
Manhattan Bank).

         7.  A copy of the latest report of condition of the Trustee, published
pursuant to law or the requirements of its supervising or examining authority.

         8.  Not applicable.

         9.  Not applicable.

                                   SIGNATURE

      Pursuant to the requirements of the Trust Indenture Act of 1939 the
Trustee, The Chase Manhattan Bank, a corporation organized and existing under
the laws of the State of New York, has duly caused this statement of eligibility
to be signed on its behalf by the undersigned, thereunto duly authorized, all in
the City of New York and State of New York, on the 10th day of June, 1997.

                                   THE CHASE MANHATTAN BANK

 
                                   By /s/ H. Victor Evans, Jr.
                                     -------------------------------------------
                                          H. Victor Evans, Jr.
                                          Second Vice President

                                      -3-
<PAGE>
 
                              Exhibit 7 to Form T-1


                                Bank Call Notice

                             RESERVE DISTRICT NO. 2
                       CONSOLIDATED REPORT OF CONDITION OF

                            The Chase Manhattan Bank
                  of 270 Park Avenue, New York, New York 10017
                     and Foreign and Domestic Subsidiaries,
                     a member of the Federal Reserve System,

                   at the close of business March 31, 1997, in
        accordance with a call made by the Federal Reserve Bank of this
        District pursuant to the provisions of the Federal Reserve Act.

<TABLE> 
<CAPTION> 

                                                                             Dollar Amounts
                           ASSETS                                             in Millions

<S>                                                                               <C> 
Cash and balances due from depository institutions:
      Noninterest-bearing balances and
      currency and coin ...............................................           $  11,721
      Interest-bearing balances .......................................               3,473
Securities:  ..........................................................
Held to maturity securities............................................               2,965
Available for sale securities..........................................              35,903
Federal Funds sold and securities purchased under
      agreements to resell ............................................              24,025
Loans and lease financing receivables:
      Loans and leases, net of unearned income        $123,957
      Less: Allowance for loan and lease losses          2,853
      Less: Allocated transfer risk reserve .........       13
                                                      --------
      Loans and leases, net of unearned income,
      allowance, and reserve ..........................................             121,091
Trading Assets ........................................................              54,340
Premises and fixed assets (including capitalized
      leases)..........................................................               2,875
Other real estate owned ...............................................                 302
Investments in unconsolidated subsidiaries and
      associated companies.............................................                 139
Customers' liability to this bank on acceptances
      outstanding .....................................................               2,270
Intangible assets .....................................................               1,535
Other assets ..........................................................              10,283
                                                                                     ------
TOTAL ASSETS ..........................................................             $270,922
                                                                                  ==========
</TABLE> 

                                      - 4 -
<PAGE>
 
                                   LIABILITIES

<TABLE> 
<CAPTION> 

<S>                                                                                 <C>
Deposits
      In domestic offices ..............................................            $84,776
      Noninterest-bearing ..............................................            $32,492
      Interest-bearing .................................................             52,284
                                                                                     ------

      In foreign offices, Edge and Agreement subsidiaries,
      and IBF's ........................................................             69,171
      Noninterest-bearing ..............................................            $ 4,181
      Interest-bearing .................................................             64,990

Federal funds purchased and securities sold under agree-
ments to repurchase ....................................................             32,885
Demand notes issued to the U.S. Treasury ...............................              1,000
Trading liabilities ....................................................             42,538

Other Borrowed money (includes mortgage indebtedness
      and obligations under capitalized leases):
      With a remaining maturity of one year or less ....................              4,431
      With a remaining maturity of more than one year ..................                466
Bank's liability on acceptances executed and outstanding................              2,270
Subordinated notes and debentures ......................................              5,911
Other liabilities ......................................................             11,575

TOTAL LIABILITIES ......................................................            255,023
                                                                                 ----------

                                 EQUITY CAPITAL

Perpetual Preferred stock and related surplus                                             0
Common stock ...........................................................              1,211
Surplus (exclude all surplus related to preferred stock)................             10,283
Undivided profits and capital reserves .................................              4,941
Net unrealized holding gains (Losses)
on available-for-sale securities .......................................               (552)
Cumulative foreign currency translation adjustments ....................                 16

TOTAL EQUITY CAPITAL ...................................................             15,899
                                                                                 ----------
TOTAL LIABILITIES, LIMITED-LIFE PREFERRED
      STOCK AND EQUITY CAPITAL ......................................              $270,922
                                                                                 ==========
</TABLE> 

I, Joseph L. Sclafani, E.V.P. & Controller of the above-named bank, do hereby
declare that this Report of Condition has been prepared in conformance with the
instructions issued by the appropriate Federal regulatory authority and is true
to the best of my knowledge and belief.

                                     JOSEPH L. SCLAFANI

We, the undersigned directors, attest to the correctness of this Report of
Condition and declare that it has been examined by us, and to the best of our
knowledge and belief has been prepared in conformance with the instructions
issued by the appropriate Federal regulatory authority and is true and correct.

                                     WALTER V. SHIPLEY        )
                                     THOMAS G. LABRECQUE      )  DIRECTORS
                                     WILLIAM B. HARRISON, JR. )


                                     - 5 -

<PAGE>
 
                                                                    EXHIBIT 99.1

                             LETTER OF TRANSMITTAL

                              AFC CAPITAL TRUST I

                             Offer to Exchange its
                      8.207% Series B Capital Securities
               (Liquidation Amount $1,000 per Capital Security)
          which have been registered under the Securities Act of 1933
                      for any and all of its outstanding
                      8.207% Series A Capital Securities
               (Liquidation Amount $1,000 per Capital Security)
                          Pursuant to the Prospectus
                            dated ___________, 1997

                 The Exchange Agent for the Exchange Offer is:

                           THE CHASE MANHATTAN BANK

                        By Registered or Certified Mail

                        or Hand or Overnight Delivery:

                           The Chase Manhattan Bank
                                55 Water Street
                           Room 234, North Building
                           New York, New York  10041
                          Attention:  Carlos Esteves

                             Confirm by Telephone:
                                (212) 638-0828
                           Facsimile Transmissions:
                         (Eligible Institutions Only)
                       (212) 638-7375 or (212) 344-9367

     DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET
FORTH ABOVE OR TRANSMISSION OF THIS LETTER OF TRANSMITTAL VIA FACSIMILE TO A
NUMBER OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY.

     THE INSTRUCTIONS CONTAINED HEREIN SHOULD BE READ CAREFULLY BEFORE THIS
LETTER OF TRANSMITTAL IS COMPLETED.

- --------------------------------------------------------------------------------
       THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M.,
     NEW YORK CITY TIME, ON __________, 1997, UNLESS THE OFFER IS EXTENDED.
- --------------------------------------------------------------------------------

     Capitalized terms used but not defined herein shall have the same meaning
given them in the Prospectus (as defined below).
<PAGE>
 
     This Letter of Transmittal is to be completed by holders of Old Capital
Securities (as defined below) either if Old Capital Securities are to be
forwarded herewith or if tenders of Old Capital Securities are to be made by
book-entry transfer to an account maintained by The Chase Manhattan Bank (the
"Exchange Agent") at The Depository Trust Company ("DTC") pursuant to the
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus and an Agent's Message (as defined herein)
is not delivered.

     Holders of Old Capital Securities whose certificates (the "Certificates")
for such Old Capital Securities are not immediately available or who cannot
deliver their Certificates and all other required documents to the Exchange
Agent on or prior to the Expiration Date (as defined in the Prospectus) or who
cannot complete the procedures for book-entry transfer on a timely basis, must
tender their Old Capital Securities according to the guaranteed delivery
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.

     DELIVERY OF DOCUMENTS TO DTC DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE
AGENT.

                    NOTE:  SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY

- --------------------------------------------------------------------------------
ALL TENDERING HOLDERS COMPLETE THIS BOX:
- --------------------------------------------------------------------------------
                 DESCRIPTION OF OLD CAPITAL SECURITIES TENDERED
- --------------------------------------------------------------------------------
IF BLANK, PLEASE PRINT NAME AND ADDRESS OF              OLD CAPITAL SECURITIES
          REGISTERED HOLDER.                           (ATTACH ADDITIONAL LIST)
- --------------------------------------------------------------------------------
                                      AGGREGATE
                                      LIQUIDATION AMOUNT
          CERTIFICATE                 OF OLD CAPITAL
          NUMBER(S)*                  SECURITIES**

          ___________________________________________________

          ___________________________________________________

          ___________________________________________________

          ___________________________________________________

          TOTAL AMOUNT
          TENDERED:

- --------------------------------------------------------------------------------
*   Need not be completed by book-entry holders.

**  Old Capital Securities may be tendered in whole or in part in denominations
    of $100,000 and integral multiples of $1,000 in excess thereof, provided
    that if any Old Capital Securities are tendered for exchange in part, the
    untendered principal amount thereof must be $100,000 or any integral
    multiple of $1,000 in excess thereof. All Old Capital Securities held shall
    be deemed tendered unless a lesser number is specified in this column.
- --------------------------------------------------------------------------------

                                      -2-
<PAGE>
 
           (BOXES BELOW TO BE CHECKED BY ELIGIBLE INSTITUTIONS ONLY)

[  ] CHECK HERE IF TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED BY BOOK-
     ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT WITH
     DTC AND COMPLETE THE FOLLOWING:

      Name of Tendering Institution:__________________________________________

      DTC Account Number______________________________________________________

      Transaction Code Number_________________________________________________

[  ] CHECK HERE AND ENCLOSE A PHOTOCOPY OF THE NOTICE OF GUARANTEED DELIVERY IF
     TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED PURSUANT TO A NOTICE OF
     GUARANTEED DELIVERY PREVIOUSLY SENT TO THE EXCHANGE AGENT AND COMPLETE THE
     FOLLOWING:

     Name(s) of Registered Holder(s):_________________________________________

     Window Ticket Number (if any)____________________________________________

     Date of Execution of Notice of Guaranteed Delivery_______________________

     Name of Institution which Guaranteed Delivery____________________________

       If Guaranteed Delivery is to be made by Book-Entry Transfer:

          Name of Tendering Institution___________________________________

          DTC Account Number______________________________________________

          Transaction Code Number_________________________________________

[  ] CHECK HERE IF TENDERED BY BOOK-ENTRY TRANSFER AND NON-EXCHANGED OLD CAPITAL
     SECURITIES ARE TO BE RETURNED BY CREDITING THE DTC ACCOUNT NUMBER SET FORTH
     ABOVE.

[  ] CHECK HERE IF YOU ARE A BROKER-DEALER WHO ACQUIRED THE OLD CAPITAL
     SECURITIES FOR ITS OWN ACCOUNT AS A RESULT OF MARKET MAKING OR OTHER
     TRADING ACTIVITIES (A "PARTICIPATING BROKER-DEALER") AND WISH TO RECEIVE 10
     ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR
     SUPPLEMENTS THERETO.

     Name:____________________________________________________________________

     Address:_________________________________________________________________

     _________________________________________________________________________

                                      -3-
<PAGE>
 
Ladies and Gentlemen:

  The undersigned hereby tenders to AFC Capital Trust I, a trust formed under
the laws of Delaware (the "Trust") and Allmerica Financial Corporation, a
Delaware corporation, (the "Company"), the above described aggregate Liquidation
Amount of the Trust's 8.207% Series A Capital Securities (the "Old Capital
Securities") in exchange for a like aggregate Liquidation Amount of the Trust's
8.207% Series B Capital Securities (the "New Capital Securities") which have
been registered under the Securities Act of 1933 (the "Securities Act"), upon
the terms and subject to the conditions set forth in the Prospectus dated
_________, 1997, (as the same may be amended or supplemented from time to time,
the "Prospectus"), receipt of which is acknowledged, and in this Letter of
Transmittal (which, together with the Prospectus, constitute the "Exchange
Offer").

  Subject to and effective upon the acceptance for exchange of all or any
portion of the Old Capital Securities tendered herewith in accordance with the
terms and conditions of the Exchange Offer (including, if the Exchange Offer is
extended or amended, the terms and conditions of any such extension or
amendment), the undersigned hereby sells, assigns and transfers to or upon the
order of the Trust all right, title and interest in and to such Old Capital
Securities as are being tendered herewith.  The undersigned hereby irrevocably
constitutes and appoints the Exchange Agent as its agent and attorney-in-fact
(with full knowledge that the Exchange Agent is also acting as agent of the
Company and the Trust in connection with the Exchange Offer) with respect to the
tendered Old Capital Securities, with full power of substitution (such power of
attorney being deemed to be an irrevocable power coupled with an interest),
subject only to the right of withdrawal described in the Prospectus, to (i)
deliver Certificates for Old Capital Securities to the Company or the Trust
together with all accompanying evidences of transfer and authenticity to, or
upon the order of, the Trust, upon receipt by the Exchange Agent, as the
undersigned's agent, of the New Capital Securities to be issued in exchange for
such Old Capital Securities, (ii) present Certificates for such Old Capital
Securities for transfer, and to transfer the Old Capital Securities on the books
of the Trust, and (iii) receive for the account of the Trust all benefits and
otherwise exercise all rights of beneficial ownership of such Old Capital
Securities, all in accordance with the terms and conditions of the Exchange
Offer.

  THE UNDERSIGNED HEREBY REPRESENTS AND WARRANTS THAT THE UNDERSIGNED HAS FULL
POWER AND AUTHORITY TO TENDER, EXCHANGE, SELL, ASSIGN AND TRANSFER THE OLD
CAPITAL SECURITIES TENDERED HEREBY AND THAT, WHEN THE SAME ARE ACCEPTED FOR
EXCHANGE, THE TRUST WILL ACQUIRE GOOD, MARKETABLE AND UNENCUMBERED TITLE
THERETO, FREE AND CLEAR OF ALL LIENS, RESTRICTIONS, CHARGES AND ENCUMBRANCES,
AND THAT THE OLD CAPITAL SECURITIES TENDERED HEREBY ARE NOT SUBJECT TO ANY
ADVERSE CLAIMS OR PROXIES.  THE UNDERSIGNED WILL, UPON REQUEST, EXECUTE AND
DELIVER ANY ADDITIONAL DOCUMENTS DEEMED BY THE COMPANY, THE TRUST OR THE
EXCHANGE AGENT TO BE NECESSARY OR DESIRABLE TO COMPLETE THE EXCHANGE, ASSIGNMENT
AND TRANSFER OF THE OLD CAPITAL SECURITIES TENDERED HEREBY, AND THE UNDERSIGNED
WILL COMPLY WITH ITS OBLIGATIONS UNDER THE REGISTRATION RIGHTS AGREEMENT.  THE
UNDERSIGNED HAS READ AND AGREES TO ALL OF THE TERMS OF THE EXCHANGE OFFER.

  The name(s) and address(es) of the registered holder(s) of the Old Capital
Securities tendered hereby should be printed above, if they are not already set
forth above, as they appear on the Certificates representing such Old Capital
Securities.  The Certificate number(s) and the Old Capital Securities that the
undersigned wishes to tender should be indicated in the appropriate boxes above.

  If any tendered Old Capital Securities are not exchanged pursuant to the
Exchange Offer for any reason, or if Certificates are submitted for more Old
Capital Securities than are tendered or accepted for exchange, Certificates for
such nonexchanged or nontendered Old Capital Securities will be returned (or, in
the case of Old Capital Securities tendered by book-entry transfer, such Old
Capital Securities will be credited to an account

                                      -4-
<PAGE>
 
maintained at DTC), without expense to the tendering holder, promptly following
the expiration or termination of the Exchange Offer.

  The undersigned understands that tenders of Old Capital Securities pursuant to
any one of the procedures described in "The Exchange Offer--Procedures for
Tendering Old Capital Securities" in the Prospectus and in the instructions
will, upon the Company's and the Trust's acceptance for exchange of such
tendered Old Capital Securities, constitute a binding agreement between the
undersigned, the Company and the Trust upon the terms and subject to the
conditions of the Exchange Offer.  The undersigned recognizes that, under
certain circumstances set forth in the Prospectus, the Company and the Trust may
not be required to accept for exchange any of the Old Capital Securities
tendered hereby.

  Unless otherwise indicated herein in the box entitled "Special Issuance
Instructions" below, the undersigned hereby directs that the New Capital
Securities be issued in the name(s) of the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, that such New Capital Securities
be credited to the account indicated above maintained at DTC.  If applicable,
substitute Certificates representing Old Capital Securities not exchanged or not
accepted for exchange will be issued to the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, will be credited to the account
indicated above maintained at DTC.  Similarly, unless otherwise indicated under
"Special Delivery Instructions," please deliver New Capital Securities to the
undersigned at the address shown below the undersigned's signature.

  BY TENDERING OLD CAPITAL SECURITIES AND EXECUTING THIS LETTER OF TRANSMITTAL,
THE UNDERSIGNED HEREBY REPRESENTS AND AGREES THAT (I) THE UNDERSIGNED IS NOT AN
"AFFILIATE" OF THE COMPANY OR THE TRUST, (II) ANY NEW CAPITAL SECURITIES TO BE
RECEIVED BY THE UNDERSIGNED ARE BEING ACQUIRED IN THE ORDINARY COURSE OF ITS
BUSINESS, (III) THE UNDERSIGNED HAS NO ARRANGEMENT OR UNDERSTANDING WITH ANY
PERSON TO PARTICIPATE IN THE DISTRIBUTION (WITHIN THE MEANING OF THE SECURITIES
ACT) OF NEW CAPITAL SECURITIES TO BE RECEIVED IN THE EXCHANGE OFFER, AND (IV) IF
THE UNDERSIGNED IS NOT A BROKER-DEALER, THE UNDERSIGNED IS NOT ENGAGED IN, AND
DOES NOT INTEND TO ENGAGE IN, A DISTRIBUTION (WITHIN THE MEANING OF THE
SECURITIES ACT) OF SUCH NEW CAPITAL SECURITIES.  BY TENDERING OLD CAPITAL
SECURITIES PURSUANT TO THE EXCHANGE OFFER AND EXECUTING THIS LETTER OF
TRANSMITTAL, A HOLDER OF OLD CAPITAL SECURITIES WHICH IS A BROKER-DEALER
REPRESENTS AND AGREES, CONSISTENT WITH CERTAIN INTERPRETIVE LETTERS ISSUED BY
THE STAFF OF THE DIVISION OF COMPANY FINANCE OF THE SECURITIES AND EXCHANGE
COMMISSION TO THIRD PARTIES, THAT (A) SUCH OLD CAPITAL SECURITIES HELD BY THE
BROKER-DEALER ARE HELD ONLY AS A NOMINEE, OR (B) SUCH OLD CAPITAL SECURITIES
WERE ACQUIRED BY SUCH BROKER-DEALER FOR ITS OWN ACCOUNT AS A RESULT OF MARKET-
MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES AND IT WILL DELIVER THE PROSPECTUS
(AS AMENDED OR SUPPLEMENTED FROM TIME TO TIME) MEETING THE REQUIREMENTS OF THE
SECURITIES ACT IN CONNECTION WITH ANY RESALE OF SUCH NEW CAPITAL SECURITIES
(PROVIDED THAT, BY SO ACKNOWLEDGING AND BY DELIVERING A PROSPECTUS, SUCH BROKER-
DEALER WILL NOT BE DEEMED TO ADMIT THAT IT IS AN "UNDERWRITER" WITHIN THE
MEANING OF THE SECURITIES ACT).

  THE COMPANY AND THE TRUST HAVE AGREED THAT, SUBJECT TO THE PROVISIONS OF THE
REGISTRATION RIGHTS AGREEMENT, THE PROSPECTUS, AS IT MAY BE AMENDED OR
SUPPLEMENTED FROM TIME TO TIME, MAY BE USED BY A PARTICIPATING BROKER-DEALER (AS
DEFINED BELOW) IN CONNECTION WITH RESALES OF NEW CAPITAL SECURITIES RECEIVED IN
EXCHANGE FOR OLD CAPITAL SECURITIES, WHERE SUCH OLD CAPITAL SECURITIES WERE
ACQUIRED BY SUCH PARTICIPATING BROKER-DEALER FOR ITS OWN ACCOUNT AS A RESULT OF
MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES, FOR A PERIOD ENDING 90
DAYS AFTER THE EXPIRATION DATE (SUBJECT TO EXTENSION UNDER CERTAIN LIMITED

                                      -5-
<PAGE>
 
CIRCUMSTANCES DESCRIBED IN THE PROSPECTUS) OR, IF EARLIER, WHEN ALL SUCH NEW
CAPITAL SECURITIES HAVE BEEN DISPOSED OF BY SUCH PARTICIPATING BROKER-DEALER.
IN THAT REGARD, EACH BROKER-DEALER WHO ACQUIRED OLD CAPITAL SECURITIES FOR ITS
OWN ACCOUNT AND AS A RESULT OF MARKET-MAKING OR OTHER TRADING ACTIVITIES (A
"PARTICIPATING BROKER-DEALER"), BY TENDERING SUCH OLD CAPITAL SECURITIES AND
EXECUTING THIS LETTER OF TRANSMITTAL, AGREES THAT, UPON RECEIPT OF NOTICE FROM
THE COMPANY OR THE TRUST OF THE OCCURRENCE OF ANY EVENT OR THE DISCOVERY OF ANY
FACT WHICH MAKES ANY STATEMENT CONTAINED OR INCORPORATED BY REFERENCE THEREIN,
IN LIGHT OF THE CIRCUMSTANCES UNDER WHICH THEY WERE MADE, NOT MISLEADING OR OF
THE OCCURRENCE OF CERTAIN OTHER EVENTS SPECIFIED IN THE REGISTRATION RIGHTS
AGREEMENT, SUCH PARTICIPATING BROKER-DEALER WILL SUSPEND THE SALE OF NEW CAPITAL
SECURITIES PURSUANT TO THE PROSPECTUS UNTIL THE COMPANY AND THE TRUST HAVE
AMENDED OR SUPPLEMENTED THE PROSPECTUS TO CORRECT SUCH MISSTATEMENT OR OMISSION
AND HAS FURNISHED COPIES OF THE AMENDED OR SUPPLEMENTED PROSPECTUS TO THE
PARTICIPATING BROKER-DEALER OR THE COMPANY OR THE TRUST HAS GIVEN NOTICE THAT
THE SALE OF THE NEW CAPITAL SECURITIES MAY BE RESUMED, AS THE CASE MAY BE.  IF
THE COMPANY OR THE TRUST GIVES SUCH NOTICE TO SUSPEND THE SALE OF THE NEW
CAPITAL SECURITIES, IT SHALL EXTEND THE 90-DAY PERIOD REFERRED TO ABOVE DURING
WHICH PARTICIPATING BROKER-DEALERS ARE ENTITLED TO USE THE PROSPECTUS IN
CONNECTION WITH THE RESALE OF NEW CAPITAL SECURITIES BY THE NUMBER OF DAYS
DURING THE PERIOD FROM AND INCLUDING THE DATE OF THE GIVING OF SUCH NOTICE TO
AND INCLUDING THE DATE WHEN PARTICIPATING BROKER-DEALERS SHALL HAVE RECEIVED
COPIES OF THE SUPPLEMENTED OR AMENDED PROSPECTUS NECESSARY TO PERMIT RESALES OF
THE NEW CAPITAL SECURITIES OR TO AND INCLUDING THE DATE ON WHICH THE COMPANY OR
THE TRUST HAS GIVEN NOTICE THAT THE SALE OF NEW CAPITAL SECURITIES MAY BE
RESUMED, AS THE CASE MAY BE.

  As a result, a Participating Broker-Dealer who intends to use the Prospectus
in connection with resales of New Capital Securities received in exchange for
Old Capital Securities pursuant to the Exchange Offer must notify the Company
and the Trust, or cause the Company and the Trust to be notified, on or prior to
the Expiration Date, that it is a Participating Broker-Dealer.  Such notice may
be given in the space provided above or may be delivered to the Exchange Agent
at the address set forth in the Prospectus under "The Exchange Offer--Exchange
Agent."

  Holders of Old Capital Securities whose Old Capital Securities are accepted
for exchange will not receive Distributions on such Old Capital Securities and
the undersigned waives the right to receive any Distribution on such Old Capital
Securities accumulated from and after February 3, 1997.  Accordingly, holders of
New Capital Securities as of the record date for the payment of Distributions on
August 15, 1997 will be entitled to Distributions accumulated from and after
February 3, 1997.

  All authority herein conferred or agreed to be conferred in this Letter of
Transmittal shall survive the death or incapacity of the undersigned and any
obligation of the undersigned hereunder shall be binding upon the heirs,
executors, administrators, personal representatives, trustees in bankruptcy,
legal representatives, successors and assigns of the undersigned.  Except as
stated in the Prospectus, this tender is irrevocable.

                                      -6-
<PAGE>
 
                              HOLDER(S) SIGN HERE
                         (SEE INSTRUCTIONS 2, 5 AND 6)
                  (PLEASE COMPLETE SUBSTITUTE FORM W-9 BELOW)
     (NOTE:  SIGNATURE(S) MUST BE GUARANTEED IF REQUIRED BY INSTRUCTION 2)

  Must be signed by registered holder(s) exactly as name(s) appear(s) on
Certificate(s) for the Old Capital Securities hereby tendered or on a security
position listing, or by any person(s) authorized to become the registered
holder(s) by endorsements and documents transmitted herewith (including such
opinions of counsel, certificates and other information as may be required by
the Trust or the Trustee for the Old Capital Securities to comply with the
restrictions on transfer applicable to the Old Capital Securities).  If
signature is by an attorney-in-fact, executor, administrator, trustee, guardian,
officer of a corporation or another acting in a fiduciary capacity or
representative capacity, please set forth the signer's full title.  See
Instruction 5.

________________________________________________________________________________

________________________________________________________________________________
                          (Signature(s) of Holder(s))
Date _______________, 1997

Name(s)_________________________________________________________________________
                                 (Please Print)
________________________________________________________________________________

Capacity or Title_______________________________________________________________

Address_________________________________________________________________________
                               (Include Zip Code)

Area Code(s) and Telephone Number______________________________________________

________________________________________________________________________________
               (Tax Identification or Social Security Number(s))

- --------------------------------------------------------------------------------

                           GUARANTEE OF SIGNATURE(S)
                          (SEE INSTRUCTIONS 2 AND 5)

Authorized Signature___________________________________________________________

Name___________________________________________________________________________
                                 (Please Print)
Date ________________, 1997

Capacity or
Title___________________________________________________________________________

Name of
Firm____________________________________________________________________________

Address_________________________________________________________________________
                               (Include Zip Code)
Area Code(s) and Telephone
Number__________________________________________________________________________

                                      -7-
<PAGE>
 
                         SPECIAL ISSUANCE INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)

  To be completed ONLY if  New Capital Securities or any Old Capital Securities
that are not tendered are to be issued in the name of someone other than the
registered holder of the Old Capital Securities whose name(s) appear(s) above.

ISSUE:

[  ]  New Capital Securities to:
[  ]  Old Capital Securities not tendered to:

Name(s):_______________________________________________________________________
                                 (Please print)
Address:________________________________________________________________________
                                                                      (Zip Code)
________________________________________________________________________________
              (Taxpayer Identification or Social Security Number)
                       (See enclosed Substitute Form W-9)

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                         SPECIAL DELIVERY INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)

  To be completed ONLY if New Capital Securities or any Old Capital Securities
that are not tendered are to be sent to someone other than the registered holder
of the Old Capital Securities whose name(s) appear(s) above, or to the
registered holder(s) at an address other than that shown above.

MAIL:

[  ]  New Capital Securities to:
[  ]  Old Capital Securities not tendered to:

Name:___________________________________________________________________________
                                    (Please print)

Address:_______________________________________________________________________
                                   (Zip Code)

- --------------------------------------------------------------------------------

                                      -8-
<PAGE>
 
                                  INSTRUCTIONS

         Forming Part of the Terms and Conditions of the Exchange Offer

  1.  Delivery of Letter of Transmittal and Certificates; Guaranteed Delivery
Procedures.  This Letter of Transmittal is to be completed either if (a) tenders
are to be made pursuant to the procedures for tender by book-entry transfer set
forth in "The Exchange Offer--Procedures for Tendering Old Capital Securities"
in the Prospectus and an Agent's Message is not delivered or (b) Certificates
are to be forwarded herewith.  Timely confirmation of a book-entry transfer of
such Old Capital Securities into the Exchange Agent's account at DTC, or
Certificates as well as this Letter of Transmittal (or facsimile thereof),
properly completed and duly executed, with any required signature guarantees,
and any other documents required by this Letter of Transmittal, must be received
by the Exchange Agent at its addresses set forth herein on or prior to the
Expiration Date.  Tenders by book-entry transfer may also be made by delivering
an Agent's Message in lieu of this Letter of Transmittal.  The term "Agent's
Message" means a message, transmitted by DTC to and received by the Exchange
Agent and forming a part of a book-entry confirmation, which states that DTC has
received an express acknowledgment from the tendering Participant, which
acknowledgment states that such Participant has received and agrees to be bound
by the Letter of Transmittal and that the Trust and the Company may enforce the
Letter of Transmittal against such Participant.  The term "book-entry
confirmation" means a timely confirmation of book-entry transfer of Old Capital
Securities into the Exchange Agent's account at DTC.  Old Capital Securities may
be tendered in whole or in part in the principal amount of $100,000 (100 Capital
Securities) and integral multiples of $1,000 in excess thereof, provided that,
if any Old Capital Securities are tendered for exchange in part, the untendered
principal amount thereof must be $100,000 (100 Capital Securities) or any
integral multiple of $1,000 in excess thereof.

  Holders who wish to tender their Old Capital Securities and (i) who cannot
complete the procedures for delivery by book-entry transfer on a timely basis,
or (ii) who cannot deliver their Old Capital Securities, this Letter of
Transmittal and all other required documents to the Exchange Agent on or prior
to the Expiration Date or (iii) whose Old Capital Securities are not immediately
available may tender their Old Capital Securities by properly completing and
duly executing a Notice of Guaranteed Delivery pursuant to the guaranteed
delivery procedures set forth in "The Exchange Offer -- Procedures for Tendering
Old Capital Securities" in the Prospectus.  Pursuant to such procedures:  (a)
such tender must be made by or through an Eligible Institution (as defined
below); (b) a properly completed and duly executed Notice of Guaranteed
Delivery, substantially in the form made available by the Company, must be
received by the Exchange Agent on or prior to the Expiration Date; and (c) the
Certificates (or a book-entry confirmation) representing tendered Old Capital
Securities, in proper form for transfer, together with a Letter of Transmittal
(or facsimile thereof or Agent's Message in lieu thereof), properly completed
and duly executed, with any required signature guarantees and any other
documents required by this Letter of Transmittal, must be received by the
Exchange Agent within three New York Stock Exchange, Inc. trading days after the
date of execution of such Notice of Guaranteed Delivery, all as provided in "The
Exchange Offer -- Procedures for Tendering Old Capital Securities" in the
Prospectus.

  The Notice of Guaranteed Delivery may be delivered by hand or transmitted by
facsimile or mail to the Exchange Agent, and must include a guarantee by an
Eligible Institution in the form set forth in such Notice.  For Old Capital
Securities to be properly tendered pursuant to the guaranteed delivery
procedure, the Exchange Agent must receive a Notice of Guaranteed Delivery on or
prior to the Expiration Date.  As used herein and in the Prospectus, "Eligible
Institution" means a firm or other entity identified in Rule 17Ad-15 under the
Exchange Act as "an eligible guarantor institution," including (as such terms
are defined therein) (i) a bank; (ii) a broker, dealer, municipal securities
broker or dealer or government securities broker or dealer; (iii) a credit
union; (iv) a national securities exchange, registered securities association or
clearing agency; or (v) a savings association that is a participant in a
Securities Transfer Association.

                                      -9-
<PAGE>
 
  THE METHOD OF DELIVERY OF CERTIFICATES, THIS LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING HOLDER
AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE EXCHANGE
AGENT.  IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED,
PROPERLY INSURED, OR OVERNIGHT DELIVERY SERVICE IS RECOMMENDED.  IN ALL CASES,
SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.

  NEITHER THE COMPANY NOR THE TRUST WILL ACCEPT ANY ALTERNATIVE, CONDITIONAL OR
CONTINGENT TENDERS. EACH TENDERING HOLDER, BY EXECUTION OF A LETTER OF
TRANSMITTAL (OR FACSIMILE THEREOF OR AGENT'S MESSAGE IN LIEU THEREOF), WAIVES
ANY RIGHT TO RECEIVE ANY NOTICE OF THE ACCEPTANCE OF SUCH TENDER.

  2.  Guarantee of Signatures.  No signature guarantee on this Letter of
Transmittal is required if:

  (i)  this Letter of Transmittal is signed by the registered holder (which
term, for purposes of this document, shall include any participant in DTC whose
name appears on a security position listing as the owner of the Old Capital
Securities) of Old Capital Securities tendered herewith, unless such holder(s)
has completed either the box entitled "Special Issuance Instructions" or the box
entitled "Special Delivery Instructions" above, or

  (ii  such Old Capital Securities are tendered for the account of a firm that
is an Eligible Institution.

  In all other cases, an Eligible Institution must guarantee the signature(s) on
this Letter of Transmittal. See Instruction 5.

  3.  Inadequate Space.  If the space provided in the box captioned "Description
of Old Capital Securities Tendered" is inadequate, the Certificate number(s)
and/or the principal amount of Old Capital Securities and any other required
information should be listed on a separate signed schedule which is attached to
this Letter of Transmittal.

  4.  Partial Tenders and Withdrawal Rights.  Tenders of Old Capital Securities
will be accepted only in the principal amount of $100,000 (100 Capital
Securities) and integral multiples of $1,000 in excess thereof, provided that if
any Old Capital Securities are tendered for exchange in part, the untendered
principal amount thereof must be $100,000 (100 Capital Securities) or any
integral multiple of $1,000 in excess thereof.  If less than all the Old Capital
Securities evidenced by any Certificate submitted are to be tendered, fill in
the principal amount of Old Capital Securities which are to be tendered in the
box entitled "Liquidation Amount of Old Capital Securities Tendered."  In such
case, new Certificate(s) for the remainder of the Old Capital Securities that
were evidenced by your Old Certificate(s) will be sent to the holder of the Old
Capital Security, promptly after the Expiration Date.  All Old Capital
Securities represented by Certificates delivered to the Exchange Agent will be
deemed to have been tendered unless otherwise indicated.

  Except as otherwise provided herein, tenders of Old Capital Securities may be
withdrawn at any time on or prior to the Expiration Date.  In order for a
withdrawal to be effective on or prior to that time, a written, telegraphic,
telex or facsimile transmission of such notice of withdrawal must be timely
received by the Exchange Agent at one of its addresses set forth above or in the
Prospectus on or prior to the Expiration Date.  Any such notice of withdrawal
must specify the name of the person who tendered the Old Capital Securities to
be withdrawn, the aggregate principal amount of Old Capital Securities to be
withdrawn, and (if Certificates for Old Capital Securities have been tendered)
the name of the registered holder of the Old Capital Securities as set forth on
the Certificate for the Old Capital Securities, if different from that of the
person who tendered such Old Capital Securities.  If Certificates for the Old
Capital Securities have been delivered or otherwise identified to the Exchange
Agent, then prior to the physical release of such Certificates for the Old
Capital Securities, the tendering holder must submit the serial numbers shown on
the particular Certificates for the Old Capital Securities to be withdrawn and
the signature on the notice of withdrawal must be guaranteed by an Eligible
Institution, except in the case of Old Capital Securities tendered for the
account of an Eligible Institution.  If Old Capital Securities have been
tendered pursuant to the procedures for book-entry transfer set forth in "The
Exchange

                                      -10-
<PAGE>
 
Offer -- Procedures for Tendering Old Capital Securities," the notice of
withdrawal must specify the name and number of the account at DTC to be credited
with the withdrawal of Old Capital Securities, in which case a notice of
withdrawal will be effective if delivered to the Exchange Agent by written,
telegraphic, telex or facsimile transmission. Withdrawals of tenders of Old
Capital Securities may not be rescinded. Old Capital Securities properly
withdrawn will not be deemed validly tendered for purposes of the Exchange
Offer, but may be retendered at any subsequent time on or prior to the
Expiration Date by following any of the procedures described in the Prospectus
under "The Exchange Offer -- Procedures for Tendering Old Capital Securities."

  All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by the Company and the
Trust, in their sole discretion, whose determination shall be final and binding
on all parties.  Neither the Company, the Trust, any affiliates or assigns of
the Company and the Trust, the Exchange Agent nor any other person shall be
under any duty to give any notification of any irregularities in any notice of
withdrawal or incur any liability for failure to give any such notification.
Any Old Capital Securities which have been tendered but which are withdrawn will
be returned to the holder thereof without cost to such holder promptly after
withdrawal.

  5.  Signatures on Letter of Transmittal, Assignments and Endorsements.  If
this Letter of Transmittal is signed by the registered holder(s) of the Old
Capital Securities tendered hereby, the signature(s) must correspond exactly
with the name(s) as written on the face of the Certificate(s) or on a security
position listing without alteration, enlargement or any change whatsoever.

  If any of the Old Capital Securities tendered hereby are owned of record by
two or more joint owners, all such owners must sign this Letter of Transmittal.

  If any tendered Old Capital Securities are registered in different name(s) on
several Certificates, it will be necessary to complete, sign and submit as many
separate Letters of Transmittal (or facsimiles thereof or Agent's Message in
lieu thereof) as there are different registrations of Certificates.

  If this Letter of Transmittal or any Certificates or bond powers are signed by
trustees, executors, administrators, guardians, attorneys-in-fact, officers of
corporations or others acting in a fiduciary or representative capacity, such
persons should so indicate when signing and must submit proper evidence
satisfactory to the Company and the Trust, in their sole discretion, of such
persons' authority to so act.

  When this Letter of Transmittal is signed by the registered owner(s) of the
Old Capital Securities listed and transmitted hereby, no endorsement(s) of
Certificate(s) or separate bond power(s) are required unless New Capital
Securities are to be issued in the name of a person other than the registered
holder(s).  Signature(s) on such Certificate(s) or bond power(s) must be
guaranteed by an Eligible Institution.

  If this Letter of Transmittal is signed by a person other than the registered
owner(s) of the Old Capital Securities listed, the Certificates must be endorsed
or accompanied by appropriate bond powers, signed exactly as the name or names
of the registered owner(s) appear(s) on the Certificates, and also must be
accompanied by such opinions of counsel, certifications and other information as
the Company, the Trust or the Trustee for the Old Capital Securities may require
in accordance with the restrictions on transfer applicable to the Old Capital
Securities.  Signatures on such Certificates or bond powers must be guaranteed
by an Eligible Institution.

  6.  Special Issuance and Delivery Instructions.  If New Capital Securities are
to be issued in the name of a person other than the signer of this Letter of
Transmittal, or if New Capital Securities are to be sent to someone other than
the signer of this Letter of Transmittal or to an address other than that shown
above, the appropriate boxes on this Letter of Transmittal should be completed.
Certificates for Old Capital Securities not exchanged will be returned by mail
or, if tendered by book-entry transfer, by crediting the account indicated above
maintained at DTC.  See Instruction 4.

                                      -11-
<PAGE>
 
  7.  Irregularities.  The Company and the Trust will determine, in their sole
discretion, all questions as to the form of documents, validity, eligibility
(including time of receipt) and acceptance for exchange of any tender of Old
Capital Securities which determination shall be final and binding on all
parties.  The Company and the Trust reserve the absolute right, in their sole
and absolute discretion, to reject any and all tenders determined by either of
them not to be in proper form or the acceptance of which, or exchange for, may,
in the view of counsel to the Company and the Trust, be unlawful.  The Company
and the Trust also reserve the absolute right, subject to applicable law, to
waive any of the conditions of the Exchange Offer set forth in the Prospectus
under "The Exchange Offer -- Certain Conditions to the Exchange Offer" or any
conditions or irregularity in any tender of Old Capital Securities of any
particular holder whether or not similar conditions or irregularities are waived
in the case of other holders.  The Company's and the Trust's interpretation of
the terms and conditions of the Exchange Offer (including this Letter of
Transmittal and the instructions hereto) will be final and binding.  No tender
of Old Capital Securities will be deemed to have been validly made until all
irregularities with respect to such tender have been cured or waived.  Neither
the Company, the Trust, any affiliates or assigns of the Company, the Trust, the
Exchange Agent, or any other person shall be under any duty to give notification
of any irregularities in tenders or incur any liability for failure to give such
notification.

  8.  Questions, Requests for Assistance and Additional Copies.  Questions and
requests for assistance may be directed to the Exchange Agent at its address and
telephone number set forth on the front of this Letter of Transmittal.
Additional copies of the Prospectus, this Letter of Transmittal and the Notice
of Guaranteed Delivery may be obtained from the Exchange Agent or from your
broker, dealer, commercial bank, trust company or other nominee.

  9.  31% Backup Withholding; Substitute Form W-9.  Under U.S. Federal income
tax law, a holder whose tendered Old Capital Securities are accepted for
exchange is required to provide the Exchange Agent with such holder's correct
taxpayer identification number ("TIN") on Substitute Form W-9 below.  If the
Exchange Agent is not provided with the correct TIN, the Internal Revenue
Service (the "IRS") may subject the holder or other payee to a $50 penalty.  In
addition, payments to such holders or other payees with respect to Old Capital
Securities exchanged pursuant to the Exchange Offer may be subject to 31% backup
withholding.

  The box in Part 2 of the Substitute Form W-9 may be checked if the tendering
holder has not been issued a TIN and has applied for a TIN or intends to apply
for a TIN in the near future.  If the box in Part 2 is checked, the holder or
other payee must also complete the Certificate of Awaiting Taxpayer
Identification Number below in order to avoid backup withholding.
Notwithstanding that the box in Part 2 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Exchange Agent will
withhold 31% of all payments made prior to the time a properly certified TIN is
provided to the Exchange Agent.  The Exchange Agent will retain such amounts
withheld during the 60 day period following the date of the Substitute Form W-9.
If the holder furnishes the Exchange Agent with its TIN within 60 days after the
date of the Substitute Form W-9, the amounts retained during the 60 day period
will be remitted to the holder and no further amounts shall be retained or
withheld from payments made to the holder thereafter.  If, however, the holder
has not provided the Exchange Agent with its TIN within such 60 day period,
amounts withheld will be remitted to the IRS as backup withholding.  In
addition, 31% of all payments made thereafter will be withheld and remitted to
the IRS until a correct TIN is provided.

  The holder is required to give the Exchange Agent the TIN (e.g., social
security number or employer identification number) of the registered owner of
the Old Capital Securities or of the last transferee appearing on the transfers
attached to, or endorsed on, the Old Capital Securities.  If the Old Capital
Securities are registered in more than one name or are not in the name of the
actual owner, consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional guidance on which
number to report.

  Certain holders (including, among others, corporations, financial institutions
and certain foreign persons) may not be subject to these backup withholding and
reporting requirements.  Such holders should nevertheless complete the attached
Substitute Form W-9 below, and write "exempt" on the face thereof, to avoid
possible

                                      -12-
<PAGE>
 
erroneous backup withholding. A foreign person may qualify as an exempt
recipient by submitting a properly completed IRS Form W-8, signed under
penalties of perjury, attesting to that holder's exempt status. Please consult
the enclosed "Guidelines for Certification of Taxpayer Identification Number on
Substitute Form W-9" for additional guidance on which holders are exempt from
backup withholding.

  Backup withholding is not an additional U.S. Federal income tax.  Rather, the
U.S. Federal income tax liability of a person subject to backup withholding will
be reduced by the amount of tax withheld.  If withholding results in an
overpayment of taxes, a refund may be obtained.

  10.  Lost, Destroyed or Stolen Certificates.  If any Certificate(s)
representing Old Capital Securities have been lost, destroyed or stolen, the
holder should promptly notify the Exchange Agent.  The holder will then be
instructed as to the steps that must be taken in order to replace the
Certificate(s).  This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, destroyed or stolen
Certificate(s) have been followed.

  11.  Security Transfer Taxes.  Holders who tender their Old Capital Securities
for exchange will not be obligated to pay any transfer taxes in connection
therewith.  If, however, New Capital Securities are to be delivered to, or are
to be issued in the name of, any person other than the registered holder of the
Old Capital Securities tendered, or if a transfer tax is imposed for any reason
other than the exchange of Old Capital Securities in connection with the
Exchange Offer, then the amount of any such transfer tax (whether imposed on the
registered holder or any other persons) will be payable by the tendering holder.
If satisfactory evidence of payment of such taxes or exemption therefrom is not
submitted with the Letter of Transmittal, the amount of such transfer taxes will
be billed directly to such tendering holder.

  IMPORTANT:  THIS LETTER OF TRANSMITTAL (OR FACSIMILE THEREOF) AND ALL OTHER
REQUIRED DOCUMENTS MUST BE RECEIVED BY THE EXCHANGE AGENT ON OR PRIOR TO THE
EXPIRATION DATE.

                                      -13-
<PAGE>
 
          PAYOR'S NAME:  THE CHASE MANHATTAN BANK, AS EXCHANGE AGENT
                                   SUBSTITUTE
                                   FORM W-9

DEPARTMENT OF THE TREASURY INTERNAL REVENUE SERVICE

PAYOR'S REQUEST FOR TAXPAYER IDENTIFICATION NUMBER ("TIN") AND CERTIFICATION

PART I - PLEASE PROVIDE YOUR TIN IN THE BOX AT RIGHT AND CERTIFY BY SIGNING AND
DATING BELOW.

               SOCIAL SECURITY OR EMPLOYER IDENTIFICATION NUMBER

                  ____________________________________________
                     (If awaiting TIN write "Applied For")

- --------------------------------------------------------------------------------
NAME (PLEASE PRINT)

- --------------------------------------------------------------------------------
ADDRESS

- --------------------------------------------------------------------------------
CITY                             STATE                           ZIP CODE

- --------------------------------------------------------------------------------
PART II--For Payees NOT subject to backup withholding, see the enclosed
Guidelines for Certification of Taxpayer Identification Number on Substitute
Form W-9 and complete as instructed therein.
- --------------------------------------------------------------------------------
CERTIFICATION--UNDER PENALTIES OF PERJURY, I CERTIFY THAT:
 
  1.  The number shown on this form is my correct Taxpayer Identification Number
      (or I am waiting for a number to be issued to me), AND
 
  2.  I am not subject to backup withholding because: (a) I am exempt from
      backup withholding, or (b) I have not been notified by the Internal
      Revenue Service ("IRS") that I am subject to backup withholding as a
      result of a failure to report all interest or dividends, or (c) the IRS
      has notified me that I am no longer subject to backup withholding.
 
  CERTIFICATION INSTRUCTIONS--You must cross out item (2) above if you have been
  notified by the IRS that you are subject to backup withholding because of
  underreporting interest or dividends on your tax return. However, if after
  being notified by the IRS that you were subject to backup withholding you
  received another notification from the IRS that you are no longer subject to
  backup withholding, do not cross out item (2).
       
Signature: __________________________________

Date:  ____________________, 1997

- ------------------------------------------------------------------------------- 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE OFFER. PLEASE REVIEW THE
ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER ON
SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS. YOU MUST COMPLETE THE FOLLOWING
CERTIFICATE IF YOU WROTE "APPLIED FOR" IN PART I OF SUBSTITUTE FORM W-9.
 
          PAYOR'S NAME:  THE CHASE MANHATTAN BANK, AS EXCHANGE AGENT
                                       
            CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

I certify under penalties of perjury that a taxpayer identification number has
not been issued to me, and either (a) I have mailed or delivered an application
to receive a taxpayer identification number to the appropriate Internal Revenue
Service Center or Social Security Administration Office or (b) I intend to mail
or deliver an application in the near future. I understand that if I do not
provide a taxpayer identification number within sixty (60) days, 31% of all
reportable payments made to me thereafter will be withheld until I provide a
number.

Signature(s):___________________________________________

Date: ___________________________________________

- --------------------------------------------------------------------------------

                                      -14-

<PAGE>
 
                                                                    Exhibit 99.2

                         Notice of Guaranteed Delivery
                                 for tender of
                       8.207% Series A Capital Securities
                (Liquidation Amount $1,000 per Capital Security)
                                       of
                              AFC Capital Trust I
         Unconditionally Guaranteed by Allmerica Financial Corporation


     This Notice of Guaranteed Delivery, or one substantially equivalent to this
form, must be used to accept the Exchange Offer (as defined below) if (i) the
procedures for delivery by book-entry transfer cannot be completed on a timely
basis (ii) certificates for the Trust's (as defined below) 8.207% Series A
Capital Securities (the "Old Capital Securities") are not immediately available
or (iii) Old Capital Securities, the Letter of Transmittal and all other
required documents cannot be delivered to The Chase Manhattan Bank (the
"Exchange Agent") on or prior to the Expiration Date (as defined in the
Prospectus referred to below).  This Notice of Guaranteed Delivery may be
delivered by hand, overnight courier or mail, or transmitted by facsimile
transmission, to the Exchange Agent.  See "The Exchange Offer--Procedures for
Tendering Old Capital Securities" in the Prospectus.

                 The Exchange Agent for the Exchange Offer is:
                            THE CHASE MANHATTAN BANK

         By Registered or Certified Mail or Hand or Overnight Delivery:

                            The Chase Manhattan Bank
                                55 Water Street
                            Room 234, North Building
                           New York, New York  10041
                           Attention:  Carlos Esteves

                     Confirm by Telephone:  (212) 638-0828
                            Facsimile Transmissions:
                          (Eligible Institutions Only)
                        (212) 638-7375 or (212) 344-9367

     Delivery of this Notice of Guaranteed Delivery to an address other than as
set forth above or transmission of this Notice of Guaranteed Delivery via
facsimile to a number other than as set forth above will not constitute a valid
delivery.

     This Notice of Guaranteed Delivery is not to be used to guarantee
signatures.  If a signature on a Letter of Transmittal is required to be
guaranteed by an "Eligible Institution" under the instructions thereto, such
signature guarantee must appear in the applicable space provided in the
signature box on the Letter of Transmittal.

              THE GUARANTEE ON THE REVERSE SIDE MUST BE COMPLETED
<PAGE>
 
Ladies and Gentlemen:

     The undersigned hereby tenders to AFC Capital Trust I, a trust formed under
the laws of Delaware (the "Trust"), upon the terms and subject to the conditions
set forth in the Prospectus dated __________ , 1997 (as the same may be amended
or supplemented from time to time, the "Prospectus"), and the related Letter of
Transmittal (which together constitute the "Exchange Offer"), receipt of which
is hereby acknowledged, the aggregate liquidation amount of Old Capital
Securities set forth below pursuant to the guaranteed delivery procedures set
forth in the Prospectus under the caption "The Exchange Offer--Procedures for
Tendering Old Capital Securities."


Aggregate Principal Amount Tendered:

- -----------------------------------   ------------------------------------------
                                      (Name(s) of Registered Holder(s)--Please 
                                      Print)

- -----------------------------------   ------------------------------------------
Certificate Nos. (if available)       (Address of Registered Holder(s))

- -----------------------------------   ------------------------------------------
                                      (Zip Code)

- -----------------------------------   ------------------------------------------
                                      (Area Code and Telephone No.)

                                      ------------------------------------------
                                      (Name(s) of Authorized Signatory)

Check box if Old Capital Securities 
will be delivered by book-entry 
transfer and provide account number.
                                      ------------------------------------------
                                      (Capacity)
[ ] The Depository Trust Company

                                      ------------------------------------------
                                      (Address(es) of Authorized Signatory)

DTC Account Number:
                   ----------------
                                      ------------------------------------------
                                      (Area Code and Telephone No.)
Date:
     ------------------------------


                                      ------------------------------------------

                                      ------------------------------------------
                                      (Signature(s) of Record Holder or 
                                      Authorized Signatory)

                                      Dated:
                                            ------------------------------------

                                      -2-
<PAGE>
 
                                   GUARANTEE
                    (not to be used for signature guarantee)

          The undersigned, a firm or other entity identified in Rule 17Ad-15
under the Securities Exchange Act of 1934, as amended, as an "eligible guarantor
institution," including (as such terms are defined therein):  (1) a bank; (2)
(a) a broker, dealer, municipal securities broker, municipal securities dealer,
government securities broker, government securities dealer; (3) (a) a credit
union; (4) (a) a national securities exchange, registered securities association
or clearing agency; or (b) (5) a savings association that is a participant in a
Securities Transfer Association recognized program (each of the foregoing being
referred to as an "Eligible Institution"), hereby guarantees to deliver to the
Exchange Agent at one of its addresses set forth above, either the Old Capital
Securities tendered hereby in proper form for transfer, or confirmation of the
book-entry transfer of such Old Capital Securities to the Exchange Agent's
account at The Depository Trust Company ("DTC"), pursuant to the procedures for
book-entry transfer set forth in the Prospectus, in either case together with
one or more properly completed and duly executed Letter(s) of Transmittal (or
facsimile thereof or Agent's Message in lieu thereof) and any other required
documents within three business days after the date of execution of this Notice
of Guaranteed Delivery.  The undersigned acknowledges that it must deliver the
Letter(s) of Transmittal (or facsimile thereof or Agent's Message in lieu
thereof) and the Old Capital Securities tendered hereby to the Exchange Agent
within the time period set forth above and that failure to do so could result in
a financial loss to the undersigned.


================================================================================


    ----------------------------------------------------------------------
                                 (Name of Firm)
 
    ----------------------------------------------------------------------
                             (Authorized Signature)
 
    ----------------------------------------------------------------------
                                    (Title)
 
    ----------------------------------------------------------------------
                                   (Address)
 
    ----------------------------------------------------------------------
                                   (Zip Code)
 
    ----------------------------------------------------------------------
                        (Area Code and Telephone Number)
 
    Dated:
          ----------------------------------------------------------------


================================================================================

NOTE:  DO NOT SEND OLD CAPITAL SECURITIES WITH THIS NOTICE OF GUARANTEED
       DELIVERY. ACTUAL SURRENDER OF OLD CAPITAL SECURITIES MUST BE MADE
       PURSUANT TO, AND BE ACCOMPANIED BY, A PROPERLY COMPLETED AND DULY
       EXECUTED LETTER OF TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS.

                                      -3-

<PAGE>
 
                                                                    EXHIBIT 99.3


                        Allmerica Financial Corporation
                              440 Lincoln Street
                        Worcester, Massachusetts 01653


                           EXCHANGE AGENT AGREEMENT


                                              July  , 1997


The Chase Manhattan Bank
450 West 33rd Street, 15th Floor
New York, New York  10001

Ladies and Gentlemen:

         AFC Capital Trust I, a Delaware statutory business trust (the "Issuer")
proposes to make an offer (the "Exchange Offer") to exchange up to $300,000,000
aggregate liquidation amount of its 8.207% Series B Capital Securities
(liquidation amount $1,000 per Capital Security) (the "New Capital Securities"),
which have been registered under the Securities Act of 1933, as amended (the
"Securities Act"), for a like liquidation amount of its outstanding 8.207%
Series A Capital Securities (liquidation amount $1,000 per Capital Security)
(the "Old Capital Securities"), of which $300,000,000 aggregate liquidation
amount is outstanding. The terms and conditions of the Exchange Offer as
currently contemplated are set forth in a prospectus, dated ___________, 1997
(the "Prospectus"), a copy of which is attached to this Agreement as Attachment
A, proposed to be distributed to all record holders of the Old Capital
Securities. Capitalized terms used herein and not otherwise defined shall have
the meaning assigned to them in the Prospectus.

         The Issuer hereby appoints The Chase Manhattan Bank to act as exchange
agent (the "Exchange Agent") in connection with the Exchange Offer. References
hereinafter to "you" shall refer to The Chase Manhattan Bank.

         The Exchange Offer is expected to be commenced by the Issuer on or
about ____________, 1997. The Letter of Transmittal accompanying the Prospectus
is to be used by the holders of the Old Capital Securities to accept the
Exchange offer, and contains instructions with respect to the Exchange Offer.

         The Exchange Offer shall expire at 5:00 p.m., New York City time, on
__________, 1997 or on such later date or time to which the Issuer or Allmerica
Financial Corporation (the "Company") may extend the Exchange Offer (the
"Expiration Date"). Subject to the terms and conditions set forth in the
Prospectus, the Issuer and the Company expressly reserve the
<PAGE>
 
right to extend the Exchange Offer from time to time and may extend the Exchange
Offer by giving oral (promptly confirmed in writing) or written notice to you no
later than 9:00 a.m., New York City time, on the next business day after the
previously scheduled Expiration Date.

         The Issuer and the Company expressly reserve the right to amend or
terminate the Exchange Offer, and not to accept for exchange any Old Capital
Securities not theretofore accepted for exchange, upon the occurrence of any of
the conditions of the Exchange Offer specified in the Prospectus under the
caption "Conditions to the Exchange Offer." The Issuer or the Company will give
oral (promptly confirmed in writing) or written notice of any amendment,
termination or nonacceptance to you as promptly as practicable.

         In carrying out your duties as Exchange Agent, you are to act in
accordance with the following instructions:

         1. You will perform such duties and only such duties as are
specifically set forth in the section of the Prospectus captioned "The Exchange
Offer" and as specifically set forth herein and such duties which are
necessarily incidental thereto; provided, however, that in no way will your
                                --------  -------
general duty to act in good faith be discharged by the foregoing.

         2. You will establish an account with respect to the Old Capital
Securities at The Depository Trust Company (the "Book-Entry Transfer Facility")
for purposes of the Exchange Offer within two business days after the date of
the Prospectus or, if you already have established an account with the
Book-Entry Transfer Facility suitable for the Exchange Offer, you will identify
such pre-existing account to be used in the Exchange Offer, and any financial
institution that is a participant in the Book-Entry Transfer Facility's systems
may make book-entry delivery of the Old Capital Securities by causing the
Book-Entry Transfer Facility to transfer such Old Capital Securities into your
account in accordance with the Book-Entry Transfer Facility's procedure for such
transfer.

         3. You are to examine each of the Letters of Transmittal, certificates
for Old Capital Securities and confirmations of book-entry transfers into your
account at the Book-Entry Transfer Facility and any Agent's Message or other
documents delivered or mailed to you by or for holders of the Old Capital
Securities to ascertain whether: (i) the Letters of Transmittal and any such
other documents are duly executed and properly completed in accordance with
instructions set forth therein and (ii) the Old Capital Securities have
otherwise been properly tendered. In each case where the Letter of Transmittal
or any other document has been improperly completed or executed or any of the
certificates for Old Capital Securities are not in proper form for transfer or
some other irregularity in connection with the acceptance of the Exchange Offer
exists, you will endeavor to inform the presenters of the need for fulfillment
of all requirements and to take any other action as may be necessary or
advisable to cause such irregularity to be corrected.


                                      -2-
<PAGE>
 
         4. With the approval of an Administrative Trustee of the Issuer or the
President and Chief Executive Officer, the Vice President and Chief Financial
Officer or the Vice President and General Counsel of the Company (such approval,
if given orally, to be confirmed in writing), you are authorized to waive any
irregularities in connection with any tender of Old Capital Securities pursuant
to the Exchange Offer.

         5. Tenders of Old Capital Securities may be made only as set forth in
the section of the Prospectus captioned "The Exchange Offer -- Procedures for
Tendering Old Capital Securities" or in the Letter of Transmittal and Old
Capital Securities shall be considered properly tendered to you only when
tendered in accordance with the procedures set forth therein.

         Notwithstanding the provisions of this paragraph 5, Old Capital
Securities which the Issuer or any other party designated by the Issuer in
writing shall approve as having been properly tendered shall be considered to be
properly tendered (such approval, if given orally, shall be confirmed in
writing).

         6. You shall advise the Issuer with respect to any Old Capital
Securities delivered subsequent to the Expiration Date and accept its
instructions with respect to the disposition of such Old Capital Securities.

         7. You shall accept tenders:

               (a)  in cases where the Old Capital Securities are registered in
two or more names only if signed by all named holders;

               (b)  in cases where the signing person (as indicated on the
Letter of Transmittal) is acting in a fiduciary or a representative capacity
only when proper evidence of his or her authority to so act is submitted; and

               (c)  from persons other than the registered holder of Old Capital
Securities provided that customary transfer requirements, including any
applicable transfer taxes, are fulfilled.

         You shall accept partial tenders of Old Capital Securities where so
indicated and as permitted in the Letter of Transmittal and deliver certificates
for Old Capital Securities to the transfer agent for split-up and return any
untendered Old Capital Securities to the holder (or to such other person as may
be designated in the Letter of Transmittal) as promptly as practicable after
expiration or termination of the Exchange Offer.

         8. Upon satisfaction or waiver of all of the conditions to the Exchange
Offer, the Issuer will notify you (such notice if given orally, to be promptly
confirmed in writing) of the Issuer's acceptance, promptly after the Expiration
Date, of all Old Capital Securities properly

                                      -3-
<PAGE>
 
tendered and you, on behalf of the Issuer, will exchange such Old Capital
Securities for new Capital Securities and cause such Old Capital Securities to
be canceled. Delivery of New Capital Securities will be made on behalf of the
Issuer by you at the rate of $1,000 liquidation amount of New Capital Securities
for each $1,000 liquidation amount of Old Capital Securities tendered promptly
after notice (such notice if given orally, to be promptly confirmed in writing)
of acceptance of said Old Capital Securities by the Issuer; provided, however,
                                                            --------  -------
that in all cases, Old Capital Securities tendered pursuant to the Exchange
Offer will be exchanged only after timely receipt by you of certificates for
such Old Capital Securities (or confirmation of book-entry transfer into you
account at the Book-Entry Transfer Facility), a properly completed and duly
executed Letter of Transmittal (or facsimile thereof) with any required
signature guarantees (or Agent's Message in lieu thereof) and any other required
document. You shall issue New Capital Securities only in denominations of $1,000
or any integral multiple thereof.

         9.  Tenders pursuant to the Exchange Offer are irrevocable, except
that, subject to the terms and upon the conditions set forth in the Prospectus
and the Letter of Transmittal, Old Capital Securities tendered pursuant to the
Exchange Offer may be withdrawn at any time on or prior to the Expiration Date.

         10. The Company and the Issuer shall not be required to exchange any
Old Capital Securities tendered if any of the conditions set forth in the
Exchange Offer are not met. Notice of any decision by the Company and the Issuer
not to exchange any old Capital Securities tendered shall be given (such notice,
if given orally, shall be promptly confirmed in writing) by the Company or the
Issuer to you.

         11. If, pursuant to the Exchange Offer, the Issuer does not accept for
exchange all or part of the Old Capital Securities tendered because of an
invalid tender, the occurrence of certain other events set forth in the
Prospectus under the caption "The Exchange Offer -- Conditions to the Exchange
Offer" or otherwise, you shall as soon as practicable after the expiration or
termination of the Exchange Offer return those certificates for unaccepted Old
Capital Securities (or effect the appropriate book-entry transfer of the
unaccepted Old Capital Securities), and return any related required documents
and the Letters of Transmittal relating thereto that are in your possession, to
the persons who deposited them.

         12. All certificates for reissued Old Capital Securities or for
unaccepted Old Capital Securities shall be forwarded by (a) first-class mail,
return receipt requested, under a blanket surety bond protecting you, the Issuer
and the Company from loss or liability arising out of the non-receipt or
non-delivery of such certificates or (b) by registered mail insured separately
for the replacement value of such certificates.

         13. You are not authorized to pay or offer to pay any concessions,
commissions or solicitation fees to any broker, dealer, bank or other persons or
to engage or utilize any person to solicit tenders.

                                      -4-
<PAGE>
 
         14.  As Exchange Agent hereunder you:

                  (a) will be regarded as making no representations and having
no responsibilities as to the validity, sufficiency, value or genuineness of Old
Capital Securities, and will not be required to and will make no representation
as to the validity, value or genuineness of the Exchange Offer; provided,
however, that in no way will your general duty to act in good faith be
discharged by the foregoing;

                  (b) shall not be obligated to take any legal action hereunder
which might in your reasonable judgment involve any expense or liability, unless
you shall have been furnished with reasonable indemnity;

                  (c) shall not be liable to the Company or the Issuer for any
action taken or omitted by you, or any action suffered by you to be taken or
omitted, without negligence, misconduct or bad faith on your part, by reason of
or as a result of the administration of your duties hereunder in accordance with
the terms and conditions of this Agreement or by reason of your compliance with
the instructions set forth herein or with any written or oral instructions
delivered to you pursuant hereto, and may conclusively rely on and shall be
fully protected in acting in good faith in reliance upon any certificate,
instrument, opinion, notice, letter, facsimile or other document or security
delivered to you and reasonably believed by you to be genuine and to have been
signed by the proper party or parties;

                  (d) may reasonably act upon any tender, statement, request,
comment, agreement or other instrument whatsoever not only as to its due
execution and validity and the effectiveness of its provisions, but also as to
the truth and accuracy of any information contained therein, which you shall in
good faith reasonably believe to be genuine or to have been signed or
represented by a proper person or persons;

                  (e) may conclusively rely on and shall be fully protected in
acting upon written or oral instructions from the Issuer or any officer of the
Company with respect to the Exchange Offer;

                  (f) shall not advise any person tendering Old Capital
Securities pursuant to the Exchange Offer as to the wisdom of making such tender
or as to the market value or decline or appreciation in market value of any Old
Capital Securities; and

                  (g) may consult with your counsel with respect to any
questions relating to your duties and responsibilities and the written opinion
of such counsel shall be full and complete authorization and protection in
respect of any action taken, suffered or omitted by you hereunder in good faith
and in accordance with such advice or written opinion of such counsel.


                                      -5-
<PAGE>
 
         15. You shall take such action as may from time to time be requested by
the Company, the Issuer or their counsel (and such other action as you may
reasonably deem appropriate) to furnish copies of the Prospectus, Letter of
Transmittal and the Notice of Guaranteed Delivery, or such other forms as may be
approved from time to time by the Company or the Issuer, to all persons
requesting such documents and to accept and comply with telephone requests for
information relating to the Exchange Offer, provided that such information shall
relate only to the procedures for accepting (or withdrawing from) the Exchange
Offer. The Company or the Issuer will furnish you with copies of such documents
at your request. All other requests for information relating to the Exchange
Offer shall be directed to the Secretary of the Company at : 440 Lincoln Street,
Worcester, Massachusetts 01653.

         16. You shall advise by facsimile transmission or telephone, and
promptly thereafter confirm in writing to the Issuer, the Company and Ropes &
Gray, counsel for the Company and the Issuer, and such other person or persons
as they may request, weekly, and more frequently, if reasonably requested, up to
and including the Expiration Date, as to the principal amount of the Old Capital
Securities which have been tendered pursuant to the Exchange Offer and the items
received by you pursuant to this Agreement, separately reporting and giving
cumulative totals of the items properly received, items improperly received and
items covered by Notices of Guaranteed delivery. You shall also provide the
Company, the Issuer or any such other person or persons as the Company or the
Issuer may request from time to time prior to the Expiration Date with such
other information as the Company, the Issuer or such other person may reasonably
request. In addition, you shall grant to the Company, the Issuer and such
persons as the Company or the Issuer may request, access to those persons on
your staff who are responsible for receiving tenders, in order to ensure that
immediately prior to the Expiration Date, the Company and the Issuer shall have
received information in sufficient detail to enable them to decide whether to
extend the Exchange Offer. You shall prepare a list of persons who failed to
tender or whose tenders were not accepted and the aggregate principal amount of
Old Capital Securities not tendered or not accepted and deliver said list to the
Company and the Issuer at least seven days prior to the Expiration Date. You
shall also prepare a final list of all persons whose tenders were accepted, the
aggregate principal amount of Old Capital Securities tendered and the aggregate
principal amount of Old Capital Securities accepted and deliver said list to the
Company.

         17. Letters of Transmittal and Notices of Guaranteed Delivery shall be
stamped by you as to the date and the time of receipt thereof and shall be
preserved by you for a period of time at least equal to the period of time you
preserve other records pertaining to the transfer of securities. You shall
dispose of unused Letters of Transmittal and other surplus materials by
returning them to the Company.

         18. For services rendered as Exchange Agent hereunder you shall be
entitled to a fee of $______ and you shall be entitled to reimbursement of your
expenses (including fees and expenses of your counsel, which fees are expected
under normal circumstances to be not in

                                      -6-
<PAGE>
 
excess of $______) incurred in connection with the Exchange Offer. The
obligations under this Section 18 shall constitute joint and several obligations
of the Issuer and the Company.

         19. You hereby acknowledge receipt of the Prospectus and the Letter of
Transmittal attached hereto and further acknowledge that you have examined each
of them to the extent necessary to perform your obligations hereunder. Any
inconsistency between this Agreement, on the one hand, and the Prospectus and
the Letter of Transmittal (as they may be amended from time to time), on the
other hand, shall be resolved in favor of the latter two documents, except with
respect to the duties, liabilities and indemnification of you as Exchange Agent,
which shall be controlled by this Agreement.

         20. The Company and the Issuer jointly and severally agree to indemnify
and hold you (and your officers, directors, employees and agents) harmless in
your capacity as Exchange Agent hereunder against any liability, cost or
expense, including reasonable attorney's fees, arising out of or in connection
with the acceptance or administration of your duties hereunder, including,
without limitation, in connection with any act, omission, delay or refusal made
by you in reasonable reliance upon any signature, enforcement, assignment,
certificate, order, request, notice, instruction or other instrument or document
reasonably believed by you to be valid, genuine and sufficient and in accepting
any tender or effecting any transfer of Old Capital Securities reasonably
believed by you in good faith to be authorized, and in delaying or refusing in
good faith to accept any tenders or effect any transfer of Old Capital
Securities; provided, however, that the Company and the Issuer shall not be
            --------  -------
liable for indemnification or otherwise for any loss, liability, cost or expense
to the extent arising out of your negligence, willful breach of this Agreement,
willful misconduct or bad faith. In no case shall the Company and the Issuer be
liable under this indemnity with respect to any claim against you unless the
Company and the Issuer shall be notified by you, by letter or cable or by
facsimile confirmed by letter, of the written assertion of a claim against you
or of any other action commenced against you, promptly after you shall have
received any such written assertion or commencement of action. The Company and
the Issuer shall be entitled to participate at their own expense in the defense
of any such claim or other action. You shall not compromise or settle any such
action or claim without the consent of the Company and the Issuer.

         21. This Agreement and your appointment as Exchange Agent hereunder
shall be construed and enforced in accordance with the laws of the State of New
York applicable to agreements made and to be performed entirely within such
state, without regard to conflicts of law principles, and shall inure to the
benefit of, and the obligations created hereby shall be binding upon, the
successors and assigns of each of the parties hereto.

         22. This Agreement may be executed in two or more counterparts, each of
which shall be deemed to be an original and all of which taken together
constitute one and the same agreement.


                                      -7-
<PAGE>
 
         23. In case any provision of this Agreement shall be invalid, illegal
or unenforceable, the validity, legality and enforceability of the remaining
provisions shall not in any way be affected or impaired thereby.

         24. This Agreement shall not be deemed or construed to be modified,
amended, rescinded, canceled or waived, in whole or in part, except by a written
instrument signed by a duly authorized representative of the party to be
charged. This Agreement may not be modified orally.

         25. Unless otherwise provided herein, all notices, requests and other
communications to any party hereunder shall be in writing (including facsimile)
and shall be given to such party, addressed to it, at its address or telecopy
number set forth below:

                  If to the Company or the Issuer:

                           440 Lincoln Street
                           Worcester, Massachusetts  01653
                           Attention:  Jean Peters, Vice President - Investor 
                                       Relations
                           Facsimile:  (414) 765-6111

                  With a copy to:

                           Ropes & Gray
                           One International Place
                           Boston, Massachusetts  02110
                           Attention:  Lauren I. Norton, Esq.
                           Facsimile:  (617) 951-7050

                  If to the Exchange Agent:

                           The Chase Manhattan Bank
                           450 West 33rd Street, l5th Floor
                           New York, New York  10001
                           Attention:  Patricia Morabito
                           Facsimile:  (212) 946-8159/60

         26. Unless terminated earlier by the parties hereto, this Agreement
shall terminate 90 days following the Expiration Date. Notwithstanding the
foregoing, Paragraphs 18 and 20 shall survive the termination of this Agreement.
Except as provided in Paragraph 17, upon any termination of this Agreement, you
shall promptly deliver to the Company any funds or property (including, without
limitation, Letters of Transmittal and any other documents relating to the
Exchange Offer) then held by you as Exchange Agent under this Agreement.

         27. This Agreement shall be binding and effective as of the date
hereof.

                                      -8-
<PAGE>
 
         Please acknowledge receipt of this Agreement and confirm the
arrangements herein provided by signing and returning the enclosed copy.

                                         ALLMERICA FINANCIAL CORPORATION


                                         By:  __________________________
                                              Name:
                                              Title:


                                         AFC CAPITAL TRUST I


                                         By:  __________________________
                                              Name:
                                              Title:

Accepted as of the date 
first above written:

THE CHASE MANHATTAN BANK,
as Exchange Agent


By:  ______________________________
     Name:
     Title:

                                      -9-


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