NUVEEN TAX FREE UNIT TRUST SERIES 1093
487, 1999-06-29
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<PAGE>
                                                    FILE NO. 333-81001
                                                    40 ACT FILE NO. 811-2271

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                AMENDMENT NO. 1
                                       TO
                                    FORM S-6

For Registration under the Securities Act of 1933 of Securities of Unit
Investment Trusts Registered on
Form N-8B-2

<TABLE>
<S> <C>                 <C>
A.  Exact name of Trust: NUVEEN TAX-FREE UNIT TRUST, SERIES 1093

B.  Name of Depositor:  JOHN NUVEEN & CO. INCORPORATED

C.  Complete address of Depositor's principal executive offices:

                        333 West Wacker Drive
                        Chicago, Illinois 60606

D.  Name and complete address of agents for service:

                        JOHN NUVEEN & CO. INCORPORATED
                        Attn: Alan G. Berkshire
                        333 West Wacker Drive
                        Chicago, Illinois 60606

                        CHAPMAN AND CUTLER
                        Attn: Eric F. Fess
                        111 West Monroe Street
                        Chicago, Illinois 60603

It is proposed that this filing will become effective (check appropriate box)

/ / immediately upon filing pursuant to paragraph (b)

/ / on June 29, 1999 pursuant to paragraph (b)

/ / 60 days after filing pursuant to paragraph (a)

/ / on June 29, 1999 pursuant to paragraph (a) of rule 485 or 486

E.  Title of securities being registered: Units of undivided fractional beneficial
    interest.

F.  Approximate date of proposed sale to the public: As soon as practicable after the
    effective date of the Registration Statement.

/X/ Check box if it is proposed that this filing will become effective on June 29, 1999
    at 1:30 P.M. pursuant to Rule 487.
</TABLE>
<PAGE>
A
[Logo]
Defined Portfolios


                                 Nuveen Georgia


Insured Trust 65



<TABLE>
<S>                               <C>
CUSIP NUMBERS:
MONTHLY:                             67102H 462
QUARTERLY:                           67102H 470
SEMI-ANNUALLY:                       67102H 488
</TABLE>


Prospectus Part A dated June 29, 1999
- --------------------------------------------------------------------------------

Overview


Nuveen Georgia Insured Trust 65 (the "Trust") is a series of the Nuveen Tax-Free
Unit Trust, Series 1093. The Trust is a unit investment trust consisting of a
portfolio of bonds and seeks to provide income exempt from Federal and Georgia
income tax and to conserve capital.


THIS PART A PROSPECTUS MAY NOT BE DISTRIBUTED UNLESS ACCOMPANIED BY PART B OF
THE NUVEEN TAX-FREE UNIT TRUSTS PROSPECTUS WHICH IS DATED SEPTEMBER 1, 1998.
ADDITIONAL INFORMATION ABOUT THE TRUST MAY BE FOUND IN THE INFORMATION
SUPPLEMENT WHICH CAN BE OBTAINED FROM THE TRUSTEE AT 4 NEW YORK PLAZA, NEW YORK,
NY 10004-2413; (800) 257-8787. THIS INFORMATION SUPPLEMENT IS INCORPORATED BY
REFERENCE INTO THE PROSPECTUS.

<TABLE>
<S>                                                  <C>
 Contents
 1 Overview                                          5 Interest Distributions
 2 Trust Summary and Financial Highlights            5 Risk Factors
 2 The Trust                                         7 Tax Status
 2 Investment Objectives                             8 Volume Incentives
 2 The Portfolio                                     8 Purchase Programs
 3 Essential Information                             9 Schedule of Investments
                                                     10 Statement of Condition
                                                     11 Report of Independent Public Accountants
</TABLE>

<TABLE>
<CAPTION>
<S>                     <C>
NOT FDIC                MAY LOSE VALUE
INSURED                 NO BANK GUARANTEE
</TABLE>

The Securities and Exchange Commission has not approved or disapproved these
securities or passed upon the adequacy of this Prospectus. Any representation to
the contrary is a criminal offense.

                                       1
<PAGE>
                     TRUST SUMMARY AND FINANCIAL HIGHLIGHTS

THE TRUST


    Georgia Insured Trust 65 (the "Trust") consists of a portfolio of
interest-bearing obligations issued by or on behalf of the State of Georgia,
certain United States Territories or authorities and political subdivisions
thereof which, in the opinion of recognized bond counsel to the issuing
authorities, provide income which is exempt from Federal income tax and Georgia
income tax, to the extent indicated below.


INVESTMENT OBJECTIVES

    The objectives of the Trust are income exempt from Federal and state income
taxes, and conservation of capital. The objectives are, of course, dependent
upon the continuing ability of the issuers, obligors and/or insurers to meet
their respective obligations.

THE PORTFOLIO


    The Portfolio of the Trust consists of 7 obligations issued by entities
located in Georgia. The bonds in the Trust are either general obligations of the
governmental entity issuing them and are backed by the taxing power thereof or
are payable as to principal and interest from the income of a specific project
or authority and are not supported by the issuer's power to levy taxes. The
sources of payment for the bonds are divided as follows:



<TABLE>
<CAPTION>
     NUMBER OF                                              PORTFOLIO
      ISSUES                PURPOSE OF ISSUE                PERCENTAGE
  ---------------  ----------------------------------------------------
  <C>              <S>                                     <C>
         2         Health Care Facility Revenue                 28.6   %
         2         Water and/or Sewer Revenue                   28.6
         2         General Obligation                           28.5
         1         Education Revenue                            14.3
</TABLE>



    Approximately 14.3% of the aggregate principal amount of the bonds in the
Trust (accounting for approximately 13.2% of the aggregate offering price of the
bonds) are original issue discount bonds. See "Risk Factors" herein and "SUMMARY
OF PORTFOLIOS" in Part B of this Prospectus for a discussion of the
characteristics of such obligations and of the risks associated therewith.


    All of the bonds in the Trust are covered by policies of insurance obtained
from the MBIA Insurance Corporation guaranteeing payment of principal and
interest when due. As a result of such insurance, the bonds in the Trust have
received a rating of "Aaa" by Moody's, "AAA" by Fitch, and/or "AAA" by Standard
& Poor's. Insurance does not guarantee the market value of the bonds or of Trust
Units.

                                       2
<PAGE>

ESSENTIAL INFORMATION, ON THE BUSINESS DAY PRIOR TO THE DATE OF DEPOSIT,
JUNE 28, 1999


Sponsor and Evaluator....... John Nuveen & Co. Incorporated
Trustee........................... The Chase Manhattan Bank

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


<TABLE>
<S>                                                   <C>
Principal Amount of Bonds in Trust..................  $     1,750,000
Number of Units.....................................           17,500
Fractional Undivided Interest in Trust Per Unit.....         1/17,500
Public Offering Price--Less than 500 Units
    Aggregate Offering Price of Bonds in Trust......  $     1,653,951
    Divided by Number of Units......................  $         94.51
    Plus Sales Charge 4.9% (5.152% of the Aggregate
     Offering Price of the Bonds per Unit)..........  $          4.87
    Public Offering Price Per Unit(1)...............  $         99.38
Redemption Price Per Unit (exclusive of accrued
  interest).........................................  $         94.12
Sponsor's Initial Repurchase Price Per Unit
  (exclusive of accrued interest)...................  $         94.51
Excess of Public Offering Price Per Unit over
  Redemption Price Per Unit.........................  $          5.26
Excess of Public Offering Price Per Unit over
  Sponsor's Repurchase Price Per Unit...............  $          4.87
Average Maturity of Bonds in the Trust(2)...........       25.8 years
</TABLE>


The income, expense and distribution data set forth below have been calculated
for Unitholders receiving monthly, quarterly or semi-annual distribution
options.


<TABLE>
<CAPTION>
                                               MONTHLY        QUARTERLY      SEMI-ANNUAL
                                             -----------     -----------     -----------
  <S>                                        <C>             <C>             <C>
  Calculation of Estimated Net Annual
    Interest Income Per Unit
      Annual Interest Income(3)............     $ 4.9822       $ 4.9822        $ 4.9822
      Less Estimated Annual Expense........      $ .2592        $ .2272         $ .2082
                                             -----------     -----------     -----------
      Estimated Net Annual Interest
        Income(4)..........................     $ 4.7230       $ 4.7550        $ 4.7740
  Daily Rate of Accrual Per Unit...........     $ .01311       $ .01320        $ .01326
  ESTIMATED CURRENT RETURN(5)..............         4.76%          4.79 %          4.81 %
  ESTIMATED LONG TERM RETURN(5)............         4.87%          4.90 %          4.92 %
  Trustee's Annual Fees(6).................     $ 1.4994       $ 1.1794        $ 0.9894
Date of Deposit..................................................................................June 29, 1999
Settlement Date...................................................................................July 2, 1999
Mandatory Termination Date................................See "OTHER INFORMATION" in Part B of this Prospectus
Minimum Value of Each Trust...............................See "OTHER INFORMATION" in Part B of this Prospectus
Sponsor's Annual Evaluation Fee(7)..................................$0.17 per $1,000 principal amount of Bonds
Estimated Annual Offering Expenses(8).........................................................$.02971 per Unit
</TABLE>


                                       3
<PAGE>
NOTES TO ESSENTIAL INFORMATION:

BECAUSE CERTAIN OF THE BONDS IN THE TRUST WILL NOT BE DELIVERED TO THE TRUSTEE
UNTIL AFTER THE SETTLEMENT DATE FOR A PURCHASE OF UNITS MADE ON THE DATE OF
DEPOSIT, INTEREST THAT ACCRUES ON THOSE BONDS BETWEEN THE DATE OF DEPOSIT AND
SUCH DELIVERY DATE WILL BE TREATED AS A RETURN OF PRINCIPAL RATHER THAN AS
TAX-EXEMPT INCOME. THE AMOUNT OF ANY SUCH RETURN OF PRINCIPAL IS NOT INCLUDED IN
THE ANNUAL INTEREST INCOME SHOWN ABOVE. FOR THE TRUST, THE FOLLOWING SETS FORTH
THE LATEST SCHEDULED BOND DELIVERY DATE, THE AMOUNT PER UNIT THAT WILL BE
TREATED AS A RETURN OF PRINCIPAL TO UNITHOLDERS WHO PURCHASE ON THE DATE OF
DEPOSIT, AND THE ESTIMATED CURRENT RETURN UNDER THE MONTHLY DISTRIBUTION PLAN
AFTER THE FIRST YEAR, ASSUMING THE PORTFOLIO AND ESTIMATED ANNUAL EXPENSES DO
NOT VARY FROM THAT SET FORTH ABOVE (SEE "WHAT ARE NORMAL TRUST OPERATING
EXPENSES?" IN PART B OF THIS PROSPECTUS AND THE "SCHEDULE OF INVESTMENTS"). THE
ESTIMATED CURRENT RETURN AFTER THE FIRST YEAR WILL ALSO BE HIGHER UNDER THE
QUARTERLY AND SEMI-ANNUAL DISTRIBUTION PLANS:


<TABLE>
  <S>                             <C>                 <C>                    <C>
                                   LATEST SCHEDULED         PER UNIT         ESTIMATED CURRENT RETURN
                                    DELIVERY DATE     RETURN OF PRINCIPAL      AFTER THE FIRST YEAR
                                  ------------------  --------------------   -------------------------
  GEORGIA INSURED TRUST.........    JULY 20, 1999     $          .06                      4.81        %
</TABLE>



(1) Units are offered at the Public Offering Price plus accrued interest from
    the preceding Record Date to, but not including, the date of settlement
    (normally three business days after purchase). The Date of Deposit of the
    Fund has been designated as the First Record Date for all plans of
    distribution of the Trust and, accordingly, for Units purchased on the Date
    of Deposit, $.04 of accrued interest to the Settlement Date will be added to
    the Public Offering Price. (See "WHAT IS ACCRUED INTEREST?" in Part B of
    this Prospectus.) The evaluation time for purpose of sale, purchase or
    redemption of Units is 4 p.m. Eastern time or as of any earlier time at
    which the New York Stock Exchange closes. (See "HOW IS THE PUBLIC OFFERING
    PRICE DETERMINED?" in Part B of this Prospectus.)


(2) The Average Maturity of bonds in the Trust is calculated based upon the
    stated maturities of the bonds in the Trust (or, with respect to bonds for
    which funds or securities have been placed in escrow to redeem such bonds on
    a stated call date, based upon such call date). The Average Maturity of
    bonds in the Trust may increase or decrease from time to time as bonds
    mature or are called or sold.

(3) Assumes delivery of all bonds. (See "COMPOSITION OF TRUSTS" appearing in
    Part B of this Prospectus.) Interest income does not include accretion of
    original issue discount on "zero coupon" bonds, Stripped Obligations or
    other original issue discount bonds. (See "SUMMARY OF PORTFOLIOS" in Part B
    of this Prospectus.)

(4) The amount and timing of interest distributions from the Trust under the
    various plans of distribution are set forth below. It is anticipated that
    the amount of interest to be distributed per Unit in each year under each
    plan of distribution will initially be substantially equal to the Estimated
    Net Annual Interest Income per Unit for that plan. The amount of interest to
    be distributed annually per Unit, will generally change as bonds are
    redeemed, mature or are sold or as fees and expenses increase or decrease.

(5) Estimated Long Term Return for the Trust represents the average of the
    yields to maturity (or call) of the bonds in the Trust's portfolio
    calculated in accordance with accepted bond practices and adjusted to
    reflect a compounding factor, expenses and sales charges. Estimated Current
    Return is computed by dividing the Net Annual Interest Income per Unit by
    the Public Offering Price, and in contrast to Estimated Long Term Return
    does not reflect the amortization of premium or accretion of discount, if
    any. For more information see "WHAT ARE ESTIMATED LONG TERM RETURN AND
    ESTIMATED CURRENT RETURN?" in Part B of this Prospectus.

(6) Each Trustee annual fee is per $1,000 principal amount of the underlying
    bonds in the Trust for that portion of the Trust that represents a
    particular plan of distribution.

(7) The Sponsor's Annual Evaluation Fee may, from time to time, be adjusted
    provided that the total adjustment upward does not, at the time of such
    adjustment, exceed the percentage of the total increase, after the date
    hereof, in consumer prices for services as measured by the United States
    Department of Labor Consumer Price Index entitled "All Services Less Rent"
    or if such index no longer exists, a comparable index. The consent or
    concurrence of any Unitholder shall not be required for any such adjustment
    or increase.

(8) The Trust (and therefore Unitholders) will bear all or a portion of its
    offering costs (including, among others, costs of registering Units with the
    Securities and Exchange Commission and states, and legal fees but not
    including the expenses incurred in the printing of preliminary and final
    prospectuses, and expenses incurred in the preparation and printing of
    brochures and other advertising materials and any other selling expenses) as
    is common for mutual funds. Total offering costs will be amortized over a
    five year period.

                                       4
<PAGE>
                             INTEREST DISTRIBUTIONS

    Details of interest distributions per Unit of the Trust under the various
plans appear in the following table based upon estimated Net Annual Interest
Income at the Date of Deposit:


<TABLE>
<CAPTION>
                                                                                                          NORMAL
                                                                                                      DISTRIBUTIONS
                                                  1999                             2000                  PER YEAR
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        8/1           11/1            2/1            5/1
Distribution Date.....................       8/15          11/15           2/15           5/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .4249(1)                                                  $  4.7837
                                                          --------  $.3984 every month  --------
Quarterly Distribution Plan...........  $   .4249(1)   $  1.2033(2)   $  1.2033      $  1.2033        $  4.8157
Semi-Annual Distribution Plan.........  $   .4249(1)   $  1.2078(3)                  $  2.4156        $  4.8347
- --------------------------------------------------------------------------------------------------------------------
</TABLE>


 * Record Dates for semi-annual distributions are May 1 and November 1; for
   quarterly distributions, they are February 1, May 1, August 1 and November 1.
   Record Dates for monthly distributions are the first day of each month.
   Distribution Dates under each distribution plan are the fifteenth day of the
   month in which the respective Record Date occurred. For additional
   information see "WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?" in Part B of
   this Prospectus.

(1) The first distribution will be paid to all Unitholders, regardless of the
    distribution plan selected. Such distribution may be more or less than a
    regular monthly distribution.

(2) Regular 3-month distribution.


(3) The second distribution under the semi-annual distribution plan represents a
    3-month distribution; subsequent semi-annual distributions will be regular
    6-month distributions.


                                  RISK FACTORS

    Risk is inherent in all investing. Investing in a unit trust involves risk,
including the risk that you may receive little or no return on your investment
or even that you may lose part or all of your investment. Therefore, before
investing you should consider carefully the following risks that you assume when
you invest in this Trust. Because of these and other risks, the Trust should
only represent a portion of your overall portfolio and you should consider an
investment in the Trust to be a part of a longer term investment strategy that
will provide the best results when followed over a number of years. There is no
guarantee that the Trust will achieve its investment objective.

    MARKET RISK: the risk that the market value of a bond or the Trust may
change rapidly and unpredictably, causing the bond or the Trust to be worth less
than its original price. Volatility in the market price of the bonds in the
Trust changes the value of the Units of the Trust. Market value may be affected
by a variety of factors including, among others, changes in the perceptions
about the issuers, changes in interest rates or inflation, changes in the
ratings of the issuers or changes in the financial condition of the issuers of
the bonds. Because the Trust is not managed, bonds in the Trust will generally
not be sold in response to market fluctuations, although bonds may be sold in
certain limited circumstances. Accordingly, an investor in the Trust may be
exposed to more market risk than an investor in certain managed investment
vehicles.

    INFLATION RISK: the risk that the value of assets or income from investments
will be less in the future as inflation decreases the value of money. As
inflation increases, the value of the Trust's assets can decline as can the
value of the Trust's distributions.

    INTEREST RATE RISK: the risk that bonds will decline in value because of a
rise in interest rates. Generally, bonds will increase in value when interest
rates decline and decrease in value when interest rates rise. Typically, bonds
with longer periods before maturity are more sensitive to interest rate changes.

    CREDIT RISK: the risk that an issuer of a bond or an insurer is unable to
meet its obligation to make interest and principal payments.

    CALL RISK: the risk that bonds can be prepaid or "called" by the issuer
before their stated maturity. If bonds are called, your income will decline and
you may not be able to reinvest the money you receive at as high a yield. Also,
an early call at par of a premium bond will reduce your return. Bonds in the
Trust are more likely to be called when interest rates decline. This would
result in early returns of principal to you and may result in early termination
of the Trust. The dates and prices upon which the bonds are first subject to
optional calls are provided in "Schedule of Investments." The bonds may also be
subject to special or extraordinary call provisions and "mandatory put" features
that may cause the bonds to be removed from the Trust prior to maturity.

    LIQUIDITY RISK: the risk that the value of the bonds may be reduced if
trading in the bonds is limited or absent. Because the bonds will generally
trade in the over-the-counter market, there can be no assurance that a liquid
trading market will exist.

                                       5
<PAGE>
    BOND QUALITY RISK: the risk that a reduction in a bond's rating may decrease
its value and the value of your investment in the Trust.

    REDUCED DIVERSIFICATION RISK: the risk that the diversification of your
investment is reduced as bonds in the Trust are called, sold or mature. This
reduction in diversification may increase the risk of loss and increase your
share of Trust expenses.

    LITIGATION AND LEGISLATION RISKS: the risk that future litigation or
legislation could affect the value of the Trust. In particular, future tax
legislation could affect the value of the Trust by reducing tax rates, imposing
a flat or other form of tax, exempting investment income from tax or changing
the tax status of the bonds.

    YEAR 2000 RISK: Like other investment companies, financial and business
organizations and individuals around the world the Trust could be adversely
affected if the computer systems used by the Sponsor or Trustee or other service
providers to the Trust do not properly process and calculate date-related
information and data from and after January 1, 2000. This is commonly known as
the "Year 2000 Problem." The Sponsor and Trustee are taking steps that they
believe are reasonably designed to address the Year 2000 Problem with respect to
computer systems that they use and to obtain reasonable assurances that
comparable steps are being taken by the Trust's other service providers. At this
time, however, there can be no assurance that these steps will be sufficient to
avoid any adverse impact to the Trust.

    The Year 2000 Problem is expected to impact corporations and other parties,
which may include issuers of the bonds contained in the Trust, to varying
degrees based upon various factors, including, but not limited to, their
industry sector and degree of technological sophistication. The Sponsor is
unable to predict what impact, if any, the Year 2000 Problem will have on
issuers or insurers of the bonds contained in the Trust.

    CONCENTRATION RISK: the risk that the Trust is less diversified, and
therefore subject to greater risk of loss, because the Trust is concentrated in
a certain type of bond. Typically, when a certain type of bond makes up 25% or
more of the portfolio, the Trust is considered to be "concentrated" in that bond
type.

    The Trust is considered to be concentrated in bonds of Health Care Facility
Revenue Issuers whose revenues are subject to certain risks including increased
governmental regulation, fluctuating occupancy levels and increased competition.
In addition, the Trust is considered to be concentrated in bonds of Water and/or
Sewer Revenue Issuers whose revenues are subject to certain risks including
problems obtaining timely and adequate rate increases and population decline
resulting in decreased user fees.


    The Trust is concentrated in the bonds of issuers located in the State of
Georgia. Such concentration may expose Unitholders to additional risks. The
financial condition of the State of Georgia is affected by various national and
local, economic, social and environmental policies and conditions and may have
an effect on the value of the Units. Additionally, Constitutional and statutory
limitations imposed on the State and its local governments concerning taxes,
bond indebtedness and other matters may constrain the revenue-generating
capacity of the State and its local governments and, therefore, the ability of
the issuers of the bonds to satisfy their obligations. Historically, the State
has experienced significant revenue shortfalls.


    The economic vitality of the State and its various regions and, therefore,
the ability of the State and its local governments to satisfy the bonds, are
affected by numerous factors. Recent widespread flooding in central and southern
Georgia has caused extensive damage and destruction of farmland, private
residences, businesses and local and state government facilities.

    The State is a party to numerous lawsuits in which an adverse final decision
could materially affect the State's governmental operations and consequently its
ability to pay debt service on its obligations.

    All outstanding general obligation bonds of the State are rated "AAA" by
Standard and Poor's and "Aaa" by Moody's.

    Further information concerning the various types of bonds contained in the
Trust is available in "SUMMARY OF PORTFOLIOS" in Part B of the Prospectus. An
additional discussion of potential risks may be obtained upon written or
telephonic request to the Trustee as described in "OTHER
INFORMATION--Supplemental Information" appearing in Part B of this Prospectus.

                                       6
<PAGE>
                                   TAX STATUS

    For a discussion of the Federal tax status of income earned on Trust Units,
see "WHAT IS THE TAX STATUS OF UNITHOLDERS?" appearing in Part B of this
Prospectus.

    The assets of the Trust will consist of interest-bearing obligations issued
by or on behalf of the State of Georgia or counties, municipalities, authorities
or political subdivisions thereof (the "Georgia Bonds") and certain bonds issued
by Puerto Rico authorities (the "Possession Bonds", and collectively with the
Georgia Bonds, the "Bonds").

    Neither the Sponsor nor its counsel have independently examined the Bonds to
be deposited in and held in the Trust. However, although no opinion is expressed
herein regarding such matters, it is assumed that: (i) the Bonds were validly
issued, (ii) the interest thereon is excludable from gross income for federal
income tax purposes and (iii) interest on the Bonds, if received directly by a
Unitholder would be exempt from the Georgia income tax (the "Georgia Income
Tax"). We have assumed that, at the respective times of issuance of the Bonds,
opinions relating to the validity thereof and to the exemption of interest
thereon from Federal income tax were rendered by bond counsel to the respective
issuing authorities. In addition, we have assumed that, with respect to the
Georgia Bonds, bond counsel to the issuing authorities rendered opinions that
interest on the Georgia Bonds is exempt from the Georgia Income Tax and, with
respect to the Possession Bonds, bond counsel to the issuing authorities
rendered opinions that the Possession Bonds and the interest thereon is exempt
from all state and local income taxation. Neither the Sponsor nor its counsel
has made any review for the Trust of the proceedings relating to the issuance of
the Bonds or of the bases for the opinions rendered in connection therewith.

    In the opinion of Chapman and Cutler, counsel to the Sponsor, under existing
Georgia law:

        For Georgia income tax purposes, the Trust is not an association taxable
    as a corporation, and the income of the Trust will be treated as the income
    of the Unitholders. Interest on the Georgia Bonds which is exempt from
    Georgia income tax when received by the Trust, and which would be exempt
    from Georgia income tax if received directly by a Unitholder, will retain
    its status as tax-exempt interest when distributed by the Trust and received
    by the Unitholders. Interest on the Possession Bonds which is excludible
    from gross income for federal income tax purposes and is exempt from state
    and local taxation pursuant to federal law when received by the Trust will
    be exempt from Georgia income taxation and therefore will not be includible
    in the income of the Unitholder for Georgia income tax purposes when
    distributed by the Trust and received by the Unitholders.

        If the Trustee disposes of a Bond (whether by sale, exchange, payment on
    maturity, retirement or otherwise) or if a Unitholder redeems or sells his
    Unit, the Unitholder will recognize gain or loss for Georgia income tax
    purposes to the same extent that gain or loss would be recognized for
    federal income tax purposes (except in the case of Bonds issued before March
    11, 1987 issued with original issue discount owned by the Trust in which
    case gain or loss for Georgia income tax purposes may differ from the amount
    recognized for federal income tax purposes because original issue discount
    on such Bonds may be determined by accruing said original issue discount on
    a ratable basis). Due to the amortization of bond premium and other basis
    adjustments required by the Internal Revenue Code, a Unitholder, under some
    circumstances, may realize taxable gain when his or her Units are sold or
    redeemed for an amount less than or equal to their original cost.

        Amounts paid by the Insurer under an insurance policy or policies issued
    to the Trust, if any, with respect to the Bonds in the Trust which represent
    maturing interest on defaulted obligations held by the Trustee will be
    exempt from State income taxes if, and to the extent as, such interest would
    have been so exempt if paid by the issuer of the defaulted obligations
    provided that, at the time such policies are purchased, the amounts paid for
    such policies are reasonable, customary and consistent with the reasonable
    expectation that the issuer of the obligations, rather than the insurer,
    will pay debt service on the obligations.

        Neither the Bonds nor the Units will be subject to Georgia sales or use
    tax.

        Chapman and Cutler has expressed no opinion with respect to taxation
    under any other provision of Georgia law. Ownership of the Units may result
    in collateral Georgia tax consequences to certain taxpayers. Prospective
    investors should consult their tax advisors as to the applicability of any
    such collateral consequences.

                                       7
<PAGE>
                               VOLUME INCENTIVES

    The Sponsor has made substantial enhancements to the volume incentive
program for dealer firms currently described in Part B of this Prospectus. The
following information replaces any discussion of volume incentives in Part B.
Volume incentives can be earned as a marketing allowance by eligible dealer
firms who reach cumulative firm sales or sales arrangement levels of a specified
dollar amount of Nuveen unit trusts (other than any series of the Nuveen--The
Dow 5-SM- Portfolios and Nuveen--The Dow 10-SM- Portfolios) sold in the primary
or secondary market during any quarter as set forth in the table below. Eligible
dealer firms are dealers that are providing marketing support for Nuveen unit
trusts in the form of 1) distributing or permitting the distribution of
marketing materials and other product information, 2) providing Nuveen
representatives access to the dealer's branch offices, and 3) generally
facilitating the placement of orders by the dealer's registered representatives
such as putting Nuveen unit trusts on their order entry screens. Eligible firms
will not include firms that solely provide clearing services to broker/dealer
firms. For purposes of determining the applicable volume incentive rate for a
given quarter, the dollar amount of all units sold over the current and three
previous quarters (the "Measuring Period") is aggregated. The volume incentive
received by the dealer firm will equal the dollar amount of units sold during
the current quarter times the highest applicable rate for the Measuring Period.
For firms that meet the necessary volume level, volume incentives may be given
on all applicable trades originated from or by that firm.

<TABLE>
<CAPTION>
       TOTAL DOLLAR AMOUNT SOLD
         OVER MEASURING PERIOD                          VOLUME INCENTIVE
- ---------------------------------------  -----------------------------------------------
<S>                                      <C>
$ 5,000,000 to $ 9,999,999               0.10% of current quarter sales
$10,000,000 to $19,999,999               0.125% of current quarter sales
$20,000,000 to $49,999,999               0.1375% of current quarter sales
$50,000,000 or more                      0.15% of current quarter sales
</TABLE>

    Only sales through the Sponsor qualify for volume incentives and for meeting
minimum requirements. The Sponsor reserves the right to modify or change the
volume incentive schedule at any time and make the determination as to which
firms qualify for the marketing allowance and the amount paid.

                               PURCHASE PROGRAMS

    Notwithstanding anything to the contrary in Part B of the Prospectus:

        1.  Units may NOT be purchased at the Public Offering Price without a
    sales charge by officers or directors and by bona fide, full-time employees
    of Nuveen, Nuveen Advisory Corp., Nuveen Institutional Advisory Corp.,
    Rittenhouse Financial Services, Inc. and The John Nuveen Company, including
    in each case these individuals and their immediate family members (as
    defined in this Prospectus).

        2.  Units may be purchased in the primary market with sales charges of
    1.70% of the Public Offering Price for National and State Long Term Trusts,
    1.35% of the Public Offering Price for Long Intermediate Trusts, 1.20% of
    the Public Offering Price for National and State Intermediate Trusts, 1.0%
    of the Public Offering Price for National and State Short Intermediate
    Trusts and 1.0% of the Public Offering Price for Short Term Trusts by: (1)
    investors who purchase Units through registered investment advisers,
    certified financial planners and registered broker-dealers who in each case
    either charge periodic fees for financial planning, investment advisory or
    asset management services, or provide such services in connection with the
    establishment of an investment account for which a comprehensive "wrap fee"
    charge is imposed, (2) bank trust departments investing funds over which
    they exercise exclusive discretionary investment authority and that are held
    in a fiduciary, agency, custodial or similar capacity; (3) any person who
    for at least 90 days, has been an officer, director or bona fide employee of
    any firm offering Units for sale to investors, (4) officers and directors of
    bank holding companies that make Units available directly or through
    subsidiaries or bank affiliates, (5) officers or directors and bona fide,
    full-time employees of Nuveen, Nuveen Advisory Corp., Nuveen Institutional
    Advisory Corp., Rittenhouse Financial Services, Inc., and The John Nuveen
    Company, including in each case these individuals and their spouses, minor
    children, and parents, however, purchases by parents must be made through a
    registered broker-dealer, and (6) any person who for at least 90 days, has
    been an officer, director or bona fide employee of any vendor who provides
    services to the Sponsor and who purchases Units through a registered
    broker-dealer (collectively, the "Discounted Purchases"). In addition, such
    investors may purchase Units in the secondary market at the Public Offering
    Price for non-breakpoint purchases minus the concession the Sponsor
    typically allows to brokers and dealers for non-breakpoint purchases.
    Notwithstanding anything to the contrary in this Prospectus, investors who
    purchase Units as described in this paragraph will not receive sales charge
    reductions for quantity purchases.

                                       8
<PAGE>

         SCHEDULE OF INVESTMENTS AT THE DATE OF DEPOSIT, JUNE 29, 1999



<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
 Principal         by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's        Price
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   250,000      City of Atlanta (Georgia), Water and                2009 at 101        AAA         Aaa     $
                   Wastewater, Revenue Bonds, Series 1999A,
                   150M-5.00% Due 11/1/29,                                                                          140,027
                   100M-5.00% Due 11/1/38.                                                                           91,232
    250,000     * The Hospital Authority of Clarke County,           2009 at 101        AAA         Aaa             240,928
                   Georgia, Hospital Revenue Certificates
                   (Athens Regional Medical Center Project),
                   Series 1999, 5.25% Due 1/1/29. (When issued.)
    250,000      Columbia County, Georgia, General Obligation        2008 at 102        AAA         Aaa             255,895
                   Bonds (Courthouse/ Detention Center
                   Projects), Series 1998, 5.625% Due 2/1/21.
    250,000      Douglasville-Douglas County Water and Sewer         2008 at 101        AAA         Aaa             218,450
                   Authority (Georgia), Water and Sewerage
                   Revenue Bonds, Series 1998, 4.50% Due 6/1/23.
                   (Original issue discount bonds delivered on
                   or about October 28, 1998 at a price of
                   93.232% of principal amount.)
    250,000      Fulco Hospital Authority (Georgia), Health          2008 at 102        AAA         Aaa             233,763
                   System Revenue Anticipation Certificates,
                   Catholic Health East Issue, Series 1998A,
                   4.875% Due 11/15/18.
    250,000     * Gwinnett County, Water and Sewerage Authority      2009 at 101        AAA         Aaa             248,998
                   (Georgia), Revenue Bonds, Series 1999, 5.30%
                   Due 8/1/22. (General Obligation Bonds.) (When
                   issued.)
    250,000      Private Colleges and Universities Authority         2009 at 101        AAA         Aaa             224,658
                   (Georgia), Revenue Bonds (Agnes Scott College
                   Project), Series 1999, 4.75% Due 6/1/28.
- -----------                                                                                                 ---------------
$ 1,750,000                                                                                                 $     1,653,951
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>



* These bonds, or a portion thereof, have delivery dates beyond the normal
  settlement date. Their expected delivery dates range from July 13, 1999 to
  July 20, 1999. Contracts relating to bonds with delivery dates after the date
  of settlement for purchase made on the Date of Deposit constitute
  approximately 29% of the aggregate principal amount of the Trust. (See
  "COMPOSITION OF TRUSTS" in Part B of this Prospectus.)

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


    (1) The Sponsor's contracts to purchase bonds were entered into during the
period from June 25, 1999 to June 28, 1999. Other information regarding the
bonds in the Trust on the Date of Deposit is as follows:



<TABLE>
<CAPTION>
                                                           PROFIT (OR
                                              COST TO         LOSS)       ANNUAL INTEREST   BID PRICE
                   TRUST                      SPONSOR      TO SPONSOR     INCOME TO TRUST   OF BONDS
  ----------------------------------------  -----------  ---------------  ---------------  -----------
  <S>                                       <C>          <C>              <C>              <C>
  Georgia Insured Trust 65................  $ 1,647,864  $       6,087    $     88,250     $ 1,647,201
</TABLE>



In addition, the difference between the Trustee's determination of Offering
Price and Bid Price (as a percentage of principal amount) is .39%. Neither cost
to Sponsor nor profit (or loss) to Sponsor reflects underwriting profits or
losses received or incurred by the Sponsor through its participation in
underwriting syndicates. The Sponsor did not participate as either the sole
underwriter or as a manager or member of a syndicate that acted as the original
underwriter of any of the bonds.


    (2) The bonds are first subject to optional redemption in the years, and at
the prices, shown. Unless otherwise indicated, the bonds, except for bonds
issued at a substantial original issue discount, are redeemable at declining
prices (but not below par value) in subsequent years. Original issue discount
bonds, including zero coupon bonds, are generally redeemable at prices based on
the issue price plus the amount of original issue discount accreted to
redemption plus, if applicable, some premium, the amount of which will decline
in subsequent years. The bonds may also be subject to sinking fund redemption
without premium prior to the dates shown. Certain bonds may be subject to
redemption without premium prior to the date shown pursuant to special or
mandatory call provisions specified in the instruments setting forth the terms
and provisions of such bonds. See "Risk Factors" herein and "COMPOSITION OF
TRUSTS" and "WHAT IS THE TAX STATUS OF UNITHOLDERS?" in Part B of this
Prospectus.

    (3) All the bonds in the Insured Trusts, as insured by the Insurer, are
rated AAA by Standard & Poor's, AAA by Fitch and/or Aaa by Moody's. The
insurance obtained by the Trust guarantees the payment of interest and principal
on the bonds when due but does not cover certain market risks associated with
fixed income securities such as accelerated payments, premiums payable on
mandatory redemptions or interest rate risks. (See "WHY AND HOW ARE THE BONDS
INSURED?" in Part B of this Prospectus and "Description of Ratings" in the
Information Supplement.)

                                       9
<PAGE>

                  STATEMENT OF CONDITION, AS OF JUNE 29, 1999



<TABLE>
<S>                                                 <C>
    TRUST PROPERTY
Sponsor's contracts to purchase bonds, backed by
  an irrevocable letter of credit(1)(2)...........  $    1,653,951
Accrued interest to June 29, 1999 on underlying
  bonds(1)........................................          14,176
Offering costs(3).................................           2,600
                                                    --------------
            Total.................................  $    1,670,727
                                                    --------------
                                                    --------------
   LIABILITIES AND INTEREST OF UNITHOLDERS
LIABILITIES:
    Accrued interest to June 29, 1999 on
     underlying bonds(4)..........................  $       14,176
    Accrued offering costs(3).....................           2,600
                                                    --------------
            Total.................................  $       16,776
                                                    --------------
                                                    --------------
INTEREST OF UNITHOLDERS:
    Units of fractional undivided interest
     outstanding (17,500)
      Cost to investors(5)........................  $    1,739,163
        Less: Gross underwriting commission(6)....          85,212
                                                    --------------
    Net amount applicable to investors............  $    1,653,951
                                                    --------------
            Total.................................  $    1,670,727
                                                    --------------
                                                    --------------
- ------------
</TABLE>


(1) Represented by contracts to purchase bonds which include "when issued" or
    "regular way" or "delayed delivery" contracts for which an irrevocable
    letter of credit issued by a major commercial bank has been deposited with
    the Trustee on the Date of Deposit. The amount of such letter of credit and
    any cash deposited exceeds the amount necessary for the purchase of the
    bonds plus accrued interest to the Date of Deposit. At the Date of Deposit,
    bonds may have been delivered to the Sponsor pursuant to certain of these
    contracts; the Sponsor has assigned to the Trustee all of its rights, title
    and interest in and to such bonds.

(2) Aggregate value (at offering prices) as of the Date of Deposit of the bonds
    listed under "Schedule of Investments" herein, and their aggregate cost to
    the Trust are the same. Such offering prices were determined by Kenny S&P
    Evaluation Services, a division of J. J. Kenny Co., Inc., as of the close of
    business on the business day prior to the Date of Deposit. (See "HOW WAS THE
    PRICE OF THE BONDS DETERMINED AT THE DATE OF DEPOSIT?" in Part B of this
    Prospectus.) Insurance coverage providing for the timely payment, when due,
    of all principal of and interest on the bonds in an Insured Trust has been
    obtained by the Sponsor or by the issuers of such bonds. Such insurance does
    not guarantee the market value of the bonds or the value of the Units. Both
    the bid and the offering prices of the underlying bonds and of the Units may
    include value attributable to such policies of insurance.

(3) The Trust (and therefore Unitholders) will bear all or a portion of its
    estimated offering costs which will be deferred and amortized over five
    years from the Date of Deposit.

(4) Representing, as set forth in "WHAT IS ACCRUED INTEREST?" in Part B of this
    Prospectus, advancement by the Trustee of an amount equal to the accrued
    bond interest as of the Date of Deposit.

(5) Aggregate Public Offering Price (exclusive of accrued interest) computed as
    set forth under "HOW IS THE PUBLIC OFFERING PRICE DETERMINED?" in Part B of
    this Prospectus.

(6) The gross underwriting commission of 4.90% of the Public Offering Price has
    been calculated on the assumption that the Units sold are not subject to a
    reduction of sales charge for quantity purchases. In single transactions
    involving 500 Units or more, the sales charge is reduced. (See "HOW IS THE
    PUBLIC OFFERING PRICE DETERMINED?" in Part B of this Prospectus.)

                                       10
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO THE BOARD OF DIRECTORS OF JOHN NUVEEN & CO. INCORPORATED AND UNITHOLDERS OF
GEORGIA INSURED TRUST 65:



    We have audited the accompanying statement of condition and the schedule of
investments at date of deposit (included in Part A of this Prospectus) of
Georgia Insured Trust 65 (contained in Nuveen Tax-Free Unit Trust, Series 1093),
as of June 29, 1999. These financial statements are the responsibility of the
Sponsor. Our responsibility is to express an opinion on these financial
statements based on our audit.


    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. Our procedures included
confirmation of the irrevocable letter of credit arrangement for the purchase of
securities, described in Note (1) to the statement of condition, by
correspondence with the Trustee. An audit also includes assessing the accounting
principles used and significant estimates made by the Sponsor, as well as
evaluating the overall financial statement presentation. We believe that our
audit provides a reasonable basis for our opinion.


    In our opinion, the statement of condition and the schedule of investments
at date of deposit referred to above present fairly, in all material respects,
the financial position of Georgia Insured Trust 65 as of June 29, 1999, in
conformity with generally accepted accounting principles.


                                                             ARTHUR ANDERSEN LLP


Chicago, Illinois
June 29, 1999


                                       11
<PAGE>
[Logo]
Defined Portfolios


                                 Nuveen Georgia


Insured Trust 65



                              PROSPECTUS -- PART A
                                 JUNE 29, 1999


<TABLE>
<C>                       <S>        <C>
                 SPONSOR             John Nuveen & Co. Incorporated
                                     333 West Wacker Drive
                                     Chicago, IL 60606-1286
                                     Telephone: 312.917.7700

                                     Swiss Bank Tower
                                     10 East 50th Street
                                     New York, NY 10022
                                     212.207.2000

                 TRUSTEE             The Chase Manhattan Bank
                                     4 New York Plaza
                                     New York, NY 10004-2413
                                     800.257.8787

           LEGAL COUNSEL             Chapman and Cutler
              TO SPONSOR             111 West Monroe Street
                                     Chicago, IL 60603

             INDEPENDENT             Arthur Andersen LLP
                  PUBLIC             33 West Monroe Street
             ACCOUNTANTS             Chicago, IL 60603
          FOR THE TRUSTS
</TABLE>

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

    This Prospectus does not contain complete information about the Unit Trust
filed with the Securities and Exchange Commission in Washington, DC under the
Securities Act of 1933 and the Investment Company Act of 1940.

    To obtain copies at proscribed rates--

<TABLE>
<S>        <C>
Write:     Public Reference Section of the Commission, 450 Fifth Street NW, Washington, DC
           20549-6009
Call:      (800) SEC-0330
Visit:     http://www.sec.gov
</TABLE>

    No person is authorized to give any information or representation about this
Trust not contained in Parts A or B of this Prospectus or the Information
Supplement, and you should not rely on any other information.

    When Units of this Fund are no longer available, this Prospectus may be used
as a preliminary Prospectus for a future series, but some of the information in
this Prospectus will be changed for that series.

    UNITS OF ANY FUTURE SERIES MAY NOT BE SOLD NOR MAY OFFERS TO BUY BE ACCEPTED
UNTIL THAT SERIES HAS BECOME EFFECTIVE WITH THE SECURITIES AND EXCHANGE
COMMISSION. NO UNITS CAN BE SOLD WHERE A SALE WOULD BE ILLEGAL.
<PAGE>
A
[Logo]
Defined Portfolios


                              Nuveen Pennsylvania


Insured Trust 252



<TABLE>
<S>                               <C>
CUSIP NUMBERS:
MONTHLY:                             67066E 224
QUARTERLY:                           67066E 232
SEMI-ANNUALLY:                       67066E 240
</TABLE>


Prospectus Part A dated June 29, 1999
- --------------------------------------------------------------------------------

Overview


Nuveen Pennsylvania Insured Trust 252 (the "Trust") is a series of the Nuveen
Tax-Free Unit Trust, Series 1093. The Trust is a unit investment trust
consisting of a portfolio of bonds and seeks to provide income exempt from
Federal and Pennsylvania income tax and to conserve capital.


THIS PART A PROSPECTUS MAY NOT BE DISTRIBUTED UNLESS ACCOMPANIED BY PART B OF
THE NUVEEN TAX-FREE UNIT TRUSTS PROSPECTUS WHICH IS DATED SEPTEMBER 1, 1998.
ADDITIONAL INFORMATION ABOUT THE TRUST MAY BE FOUND IN THE INFORMATION
SUPPLEMENT WHICH CAN BE OBTAINED FROM THE TRUSTEE AT 4 NEW YORK PLAZA, NEW YORK,
NY 10004-2413; (800) 257-8787. THIS INFORMATION SUPPLEMENT IS INCORPORATED BY
REFERENCE INTO THE PROSPECTUS.


<TABLE>
<S>                                                  <C>
 Contents
 1 Overview                                          5 Interest Distributions
 2 Trust Summary and Financial Highlights            5 Risk Factors
 2 The Trust                                         6 Tax Status
 2 Investment Objectives                             7 Volume Incentives
 2 The Portfolio                                     8 Purchase Programs
 3 Essential Information                             9 Schedule of Investments
                                                     10 Statement of Condition
                                                     11 Report of Independent Public Accountants
</TABLE>


<TABLE>
<CAPTION>
<S>                     <C>
NOT FDIC                MAY LOSE VALUE
INSURED                 NO BANK GUARANTEE
</TABLE>

The Securities and Exchange Commission has not approved or disapproved these
securities or passed upon the adequacy of this Prospectus. Any representation to
the contrary is a criminal offense.

                                       1
<PAGE>
                     TRUST SUMMARY AND FINANCIAL HIGHLIGHTS

THE TRUST


    Pennsylvania Insured Trust 252 (the "Trust") consists of a portfolio of
interest-bearing obligations issued by or on behalf of the State of
Pennsylvania, certain United States Territories or authorities and political
subdivisions thereof which, in the opinion of recognized bond counsel to the
issuing authorities, provide income which is exempt from Federal income tax and
Pennsylvania state and local income taxes, to the extent indicated below.


INVESTMENT OBJECTIVES

    The objectives of the Trust are income exempt from Federal and state income
taxes, and conservation of capital. The objectives are, of course, dependent
upon the continuing ability of the issuers, obligors and/or insurers to meet
their respective obligations.

THE PORTFOLIO


    The Portfolio of the Trust consists of 8 obligations issued by entities
located in Pennsylvania. The bonds in the Trust are either general obligations
of the governmental entity issuing them and are backed by the taxing power
thereof or are payable as to principal and interest from the income of a
specific project or authority and are not supported by the issuer's power to
levy taxes. The sources of payment for the bonds are divided as follows:



<TABLE>
<CAPTION>
     NUMBER OF                                              PORTFOLIO
      ISSUES                PURPOSE OF ISSUE                PERCENTAGE
  ---------------  ----------------------------------------------------
  <C>              <S>                                     <C>
         3         Water and/or Sewer Revenue                   31.4   %
         2         General Obligation                           25.7
         1         Health Care Facility Revenue                 14.3
         1         Education Revenue                            14.3
         1         Miscellaneous Revenue                        14.3
</TABLE>



    Approximately 2.9% of the aggregate principal amount of the bonds in the
Trust (accounting for approximately .7% of the aggregate offering price of the
bonds) are original issue discount obligations. Certain of these original issue
discount obligations, amounting to 2.9% of the aggregate principal amount and
 .7% of the aggregate offering price of the bonds in the Trust, are "zero coupon"
bonds. See "Risk Factors" herein and "SUMMARY OF PORTFOLIOS" in Part B of this
Prospectus for a discussion of the characteristics of such obligations and of
the risks associated therewith.


    All of the bonds in the Trust are covered by policies of insurance obtained
from the MBIA Insurance Corporation guaranteeing payment of principal and
interest when due. As a result of such insurance, the bonds in the Trust have
received a rating of "Aaa" by Moody's, "AAA" by Fitch, and/or "AAA" by Standard
& Poor's. Insurance does not guarantee the market value of the bonds or of Trust
Units.

                                       2
<PAGE>

ESSENTIAL INFORMATION, ON THE BUSINESS DAY PRIOR TO THE DATE OF DEPOSIT,
JUNE 28, 1999


Sponsor and Evaluator....... John Nuveen & Co. Incorporated
Trustee........................... The Chase Manhattan Bank

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


<TABLE>
<S>                                                   <C>
Principal Amount of Bonds in Trust..................  $     1,750,000
Number of Units.....................................           17,500
Fractional Undivided Interest in Trust Per Unit.....         1/17,500
Public Offering Price--Less than 500 Units
    Aggregate Offering Price of Bonds in Trust......  $     1,656,102
    Divided by Number of Units......................  $         94.63
    Plus Sales Charge 4.9% (5.152% of the Aggregate
     Offering Price of the Bonds per Unit)..........  $          4.88
    Public Offering Price Per Unit(1)...............  $         99.51
Redemption Price Per Unit (exclusive of accrued
  interest).........................................  $         94.25
Sponsor's Initial Repurchase Price Per Unit
  (exclusive of accrued interest)...................  $         94.63
Excess of Public Offering Price Per Unit over
  Redemption Price Per Unit.........................  $          5.26
Excess of Public Offering Price Per Unit over
  Sponsor's Repurchase Price Per Unit...............  $          4.88
Average Maturity of Bonds in the Trust(2)...........       26.3 years
</TABLE>


The income, expense and distribution data set forth below have been calculated
for Unitholders receiving monthly, quarterly or semi-annual distribution
options.


<TABLE>
<CAPTION>
                                               MONTHLY        QUARTERLY      SEMI-ANNUAL
                                             -----------     -----------     -----------
  <S>                                        <C>             <C>             <C>
  Calculation of Estimated Net Annual
    Interest Income Per Unit
      Annual Interest Income(3)............     $ 5.0732       $ 5.0732        $ 5.0732
      Less Estimated Annual Expense........      $ .2607        $ .2287         $ .2097
                                             -----------     -----------     -----------
      Estimated Net Annual Interest
        Income(4)..........................     $ 4.8125       $ 4.8445        $ 4.8635
  Daily Rate of Accrual Per Unit...........     $ .01336       $ .01345        $ .01350
  ESTIMATED CURRENT RETURN(5)..............         4.84%          4.87 %          4.89 %
  ESTIMATED LONG TERM RETURN(5)............         4.91%          4.94 %          4.96 %
  Trustee's Annual Fees(6).................     $ 1.4917       $ 1.1717        $ 0.9817
Date of Deposit..................................................................................June 29, 1999
Settlement Date...................................................................................July 2, 1999
Mandatory Termination Date................................See "OTHER INFORMATION" in Part B of this Prospectus
Minimum Value of Each Trust...............................See "OTHER INFORMATION" in Part B of this Prospectus
Sponsor's Annual Evaluation Fee(7)..................................$0.17 per $1,000 principal amount of Bonds
Estimated Annual Offering Expenses(8).........................................................$.03200 per Unit
</TABLE>


                                       3
<PAGE>
NOTES TO ESSENTIAL INFORMATION:

BECAUSE CERTAIN OF THE BONDS IN THE TRUST WILL NOT BE DELIVERED TO THE TRUSTEE
UNTIL AFTER THE SETTLEMENT DATE FOR A PURCHASE OF UNITS MADE ON THE DATE OF
DEPOSIT, INTEREST THAT ACCRUES ON THOSE BONDS BETWEEN THE DATE OF DEPOSIT AND
SUCH DELIVERY DATE WILL BE TREATED AS A RETURN OF PRINCIPAL RATHER THAN AS
TAX-EXEMPT INCOME. THE AMOUNT OF ANY SUCH RETURN OF PRINCIPAL IS NOT INCLUDED IN
THE ANNUAL INTEREST INCOME SHOWN ABOVE. FOR THE TRUST, THE FOLLOWING SETS FORTH
THE LATEST SCHEDULED BOND DELIVERY DATE, THE AMOUNT PER UNIT THAT WILL BE
TREATED AS A RETURN OF PRINCIPAL TO UNITHOLDERS WHO PURCHASE ON THE DATE OF
DEPOSIT, AND THE ESTIMATED CURRENT RETURN UNDER THE MONTHLY DISTRIBUTION PLAN
AFTER THE FIRST YEAR, ASSUMING THE PORTFOLIO AND ESTIMATED ANNUAL EXPENSES DO
NOT VARY FROM THAT SET FORTH ABOVE (SEE "WHAT ARE NORMAL TRUST OPERATING
EXPENSES?" IN PART B OF THIS PROSPECTUS AND THE "SCHEDULE OF INVESTMENTS"). THE
ESTIMATED CURRENT RETURN AFTER THE FIRST YEAR WILL ALSO BE HIGHER UNDER THE
QUARTERLY AND SEMI-ANNUAL DISTRIBUTION PLANS:


<TABLE>
  <S>                             <C>                 <C>                    <C>
                                   LATEST SCHEDULED         PER UNIT         ESTIMATED CURRENT RETURN
                                    DELIVERY DATE     RETURN OF PRINCIPAL      AFTER THE FIRST YEAR
                                  ------------------  --------------------   -------------------------
  PENNSYLVANIA INSURED TRUST....     JULY 8, 1999     $          .01                      4.85        %
</TABLE>



(1) Units are offered at the Public Offering Price plus accrued interest from
    the preceding Record Date to, but not including, the date of settlement
    (normally three business days after purchase). The Date of Deposit of the
    Fund has been designated as the First Record Date for all plans of
    distribution of the Trust and, accordingly, for Units purchased on the Date
    of Deposit, $.04 of accrued interest to the Settlement Date will be added to
    the Public Offering Price. (See "WHAT IS ACCRUED INTEREST?" in Part B of
    this Prospectus.) The evaluation time for purpose of sale, purchase or
    redemption of Units is 4 p.m. Eastern time or as of any earlier time at
    which the New York Stock Exchange closes. (See "HOW IS THE PUBLIC OFFERING
    PRICE DETERMINED?" in Part B of this Prospectus.)


(2) The Average Maturity of bonds in the Trust is calculated based upon the
    stated maturities of the bonds in the Trust (or, with respect to bonds for
    which funds or securities have been placed in escrow to redeem such bonds on
    a stated call date, based upon such call date). The Average Maturity of
    bonds in the Trust may increase or decrease from time to time as bonds
    mature or are called or sold.

(3) Assumes delivery of all bonds. (See "COMPOSITION OF TRUSTS" appearing in
    Part B of this Prospectus.) Interest income does not include accretion of
    original issue discount on "zero coupon" bonds, Stripped Obligations or
    other original issue discount bonds. (See "SUMMARY OF PORTFOLIOS" in Part B
    of this Prospectus.)

(4) The amount and timing of interest distributions from the Trust under the
    various plans of distribution are set forth below. It is anticipated that
    the amount of interest to be distributed per Unit in each year under each
    plan of distribution will initially be substantially equal to the Estimated
    Net Annual Interest Income per Unit for that plan. The amount of interest to
    be distributed annually per Unit, will generally change as bonds are
    redeemed, mature or are sold or as fees and expenses increase or decrease.

(5) Estimated Long Term Return for the Trust represents the average of the
    yields to maturity (or call) of the bonds in the Trust's portfolio
    calculated in accordance with accepted bond practices and adjusted to
    reflect a compounding factor, expenses and sales charges. Estimated Current
    Return is computed by dividing the Net Annual Interest Income per Unit by
    the Public Offering Price, and in contrast to Estimated Long Term Return
    does not reflect the amortization of premium or accretion of discount, if
    any. For more information see "WHAT ARE ESTIMATED LONG TERM RETURN AND
    ESTIMATED CURRENT RETURN?" in Part B of this Prospectus.

(6) Each Trustee annual fee is per $1,000 principal amount of the underlying
    bonds in the Trust for that portion of the Trust that represents a
    particular plan of distribution.

(7) The Sponsor's Annual Evaluation Fee may, from time to time, be adjusted
    provided that the total adjustment upward does not, at the time of such
    adjustment, exceed the percentage of the total increase, after the date
    hereof, in consumer prices for services as measured by the United States
    Department of Labor Consumer Price Index entitled "All Services Less Rent"
    or if such index no longer exists, a comparable index. The consent or
    concurrence of any Unitholder shall not be required for any such adjustment
    or increase.

(8) The Trust (and therefore Unitholders) will bear all or a portion of its
    offering costs (including, among others, costs of registering Units with the
    Securities and Exchange Commission and states, and legal fees but not
    including the expenses incurred in the printing of preliminary and final
    prospectuses, and expenses incurred in the preparation and printing of
    brochures and other advertising materials and any other selling expenses) as
    is common for mutual funds. Total offering costs will be amortized over a
    five year period.

                                       4
<PAGE>
                             INTEREST DISTRIBUTIONS

    Details of interest distributions per Unit of the Trust under the various
plans appear in the following table based upon estimated Net Annual Interest
Income at the Date of Deposit:


<TABLE>
<CAPTION>
                                                                                                          NORMAL
                                                                                                      DISTRIBUTIONS
                                                  1999                             2000                  PER YEAR
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        8/1           11/1            2/1            5/1
Distribution Date.....................       8/15          11/15           2/15           5/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .4288(1)                                                  $  4.8250
                                                          --------  $.4020 every month  --------
Quarterly Distribution Plan...........  $   .4288(1)   $  1.2141(2)   $  1.2141      $  1.2141        $  4.8570
Semi-Annual Distribution Plan.........  $   .4288(1)   $  1.2186(3)                  $  2.4372        $  4.8760
- --------------------------------------------------------------------------------------------------------------------
</TABLE>


 * Record Dates for semi-annual distributions are May 1 and November 1; for
   quarterly distributions, they are February 1, May 1, August 1 and November 1.
   Record Dates for monthly distributions are the first day of each month.
   Distribution Dates under each distribution plan are the fifteenth day of the
   month in which the respective Record Date occurred. For additional
   information see "WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?" in Part B of
   this Prospectus.

(1) The first distribution will be paid to all Unitholders, regardless of the
    distribution plan selected. Such distribution may be more or less than a
    regular monthly distribution.

(2) Regular 3-month distribution.


(3) The second distribution under the semi-annual distribution plan represents a
    3-month distribution; subsequent semi-annual distributions will be regular
    6-month distributions.


                                  RISK FACTORS

    Risk is inherent in all investing. Investing in a unit trust involves risk,
including the risk that you may receive little or no return on your investment
or even that you may lose part or all of your investment. Therefore, before
investing you should consider carefully the following risks that you assume when
you invest in this Trust. Because of these and other risks, the Trust should
only represent a portion of your overall portfolio and you should consider an
investment in the Trust to be a part of a longer term investment strategy that
will provide the best results when followed over a number of years. There is no
guarantee that the Trust will achieve its investment objective.

    MARKET RISK: the risk that the market value of a bond or the Trust may
change rapidly and unpredictably, causing the bond or the Trust to be worth less
than its original price. Volatility in the market price of the bonds in the
Trust changes the value of the Units of the Trust. Market value may be affected
by a variety of factors including, among others, changes in the perceptions
about the issuers, changes in interest rates or inflation, changes in the
ratings of the issuers or changes in the financial condition of the issuers of
the bonds. Because the Trust is not managed, bonds in the Trust will generally
not be sold in response to market fluctuations, although bonds may be sold in
certain limited circumstances. Accordingly, an investor in the Trust may be
exposed to more market risk than an investor in certain managed investment
vehicles.

    INFLATION RISK: the risk that the value of assets or income from investments
will be less in the future as inflation decreases the value of money. As
inflation increases, the value of the Trust's assets can decline as can the
value of the Trust's distributions.

    INTEREST RATE RISK: the risk that bonds will decline in value because of a
rise in interest rates. Generally, bonds will increase in value when interest
rates decline and decrease in value when interest rates rise. Typically, bonds
with longer periods before maturity are more sensitive to interest rate changes.

    CREDIT RISK: the risk that an issuer of a bond or an insurer is unable to
meet its obligation to make interest and principal payments.

    CALL RISK: the risk that bonds can be prepaid or "called" by the issuer
before their stated maturity. If bonds are called, your income will decline and
you may not be able to reinvest the money you receive at as high a yield. Also,
an early call at par of a premium bond will reduce your return. Bonds in the
Trust are more likely to be called when interest rates decline. This would
result in early returns of principal to you and may result in early termination
of the Trust. The dates and prices upon which the bonds are first subject to
optional calls are provided in "Schedule of Investments." The bonds may also be
subject to special or extraordinary call provisions and "mandatory put" features
that may cause the bonds to be removed from the Trust prior to maturity.

    LIQUIDITY RISK: the risk that the value of the bonds may be reduced if
trading in the bonds is limited or absent. Because the bonds will generally
trade in the over-the-counter market, there can be no assurance that a liquid
trading market will exist.

                                       5
<PAGE>
    BOND QUALITY RISK: the risk that a reduction in a bond's rating may decrease
its value and the value of your investment in the Trust.

    REDUCED DIVERSIFICATION RISK: the risk that the diversification of your
investment is reduced as bonds in the Trust are called, sold or mature. This
reduction in diversification may increase the risk of loss and increase your
share of Trust expenses.

    LITIGATION AND LEGISLATION RISKS: the risk that future litigation or
legislation could affect the value of the Trust. In particular, future tax
legislation could affect the value of the Trust by reducing tax rates, imposing
a flat or other form of tax, exempting investment income from tax or changing
the tax status of the bonds.

    YEAR 2000 RISK: Like other investment companies, financial and business
organizations and individuals around the world the Trust could be adversely
affected if the computer systems used by the Sponsor or Trustee or other service
providers to the Trust do not properly process and calculate date-related
information and data from and after January 1, 2000. This is commonly known as
the "Year 2000 Problem." The Sponsor and Trustee are taking steps that they
believe are reasonably designed to address the Year 2000 Problem with respect to
computer systems that they use and to obtain reasonable assurances that
comparable steps are being taken by the Trust's other service providers. At this
time, however, there can be no assurance that these steps will be sufficient to
avoid any adverse impact to the Trust.

    The Year 2000 Problem is expected to impact corporations and other parties,
which may include issuers of the bonds contained in the Trust, to varying
degrees based upon various factors, including, but not limited to, their
industry sector and degree of technological sophistication. The Sponsor is
unable to predict what impact, if any, the Year 2000 Problem will have on
issuers or insurers of the bonds contained in the Trust.

    CONCENTRATION RISK: the risk that the Trust is less diversified, and
therefore subject to greater risk of loss, because the Trust is concentrated in
a certain type of bond. Typically, when a certain type of bond makes up 25% or
more of the portfolio, the Trust is considered to be "concentrated" in that bond
type.

    The Trust is considered to be concentrated in bonds of Water and/or Sewer
Revenue Issuers whose revenues are subject to certain risks including problems
obtaining timely and adequate rate increases and population decline resulting in
decreased user fees.


    The Trust is concentrated in the bonds of issuers located in the State of
Pennsylvania. Such concentration may expose Unitholders to additional risks. The
financial condition of the State of Pennsylvania is affected by various national
and local, economic, social and environmental policies and conditions and may
have an effect on the value of the Units. Additionally, Constitutional and
statutory limitations imposed on the State and its local governments concerning
taxes, bond indebtedness and other matters may constrain the revenue-generating
capacity of the Commonwealth and its local governments and, therefore, the
ability of the issuers of the bonds to satisfy their obligations. Historically,
the Commonwealth has experienced significant revenue shortfalls.


    The economic vitality of the State and its various regions and, therefore,
the ability of the State and its local governments to satisfy the bonds, are
affected by numerous factors. The economy of the Commonwealth continues to be
dependent on heavy industry and manufacturing. These sectors tend to be cyclical
and are facing increasing competition from foreign producers.

    The Commonwealth is a party to numerous lawsuits in which an adverse final
decision could materially affect the Commonwealth's governmental operations and
consequently its ability to pay debt service on its obligations.

    All outstanding general obligation bonds of the Commonwealth are rated AA-
by Standard and Poor's, Aa3 by Moody's and AA by Fitch IBCA, Inc. (formerly
Fitch Investors Service).

    Further information concerning the various types of bonds contained in the
Trust is available in "SUMMARY OF PORTFOLIOS" in Part B of the Prospectus. An
additional discussion of potential risks may be obtained upon written or
telephonic request to the Trustee as described in "OTHER
INFORMATION--Supplemental Information" appearing in Part B of this Prospectus.

                                   TAX STATUS

    For a discussion of the Federal tax status of income earned on Trust Units,
see "WHAT IS THE TAX STATUS OF UNITHOLDERS?" appearing in Part B of this
Prospectus.

                                       6
<PAGE>
    In the opinion of Dechert Price & Rhoads, special Pennsylvania counsel to
the Trust, under existing law:

    Units evidencing fractional undivided interests in the Trust are not subject
to any of the personal property taxes presently in effect in Pennsylvania to the
extent of that proportion of the Trust represented by Bonds issued by the
Commonwealth of Pennsylvania, its agencies and instrumentalities, or by any
county, city, borough, town, township, school district, municipality and local
housing or parking authority in the Commonwealth of Pennsylvania or issued by
Puerto Rico, the Virgin Islands, Guam or the Northern Mariana Islands
("Pennsylvania Bonds"). The taxes referred to above include the County Personal
Property Tax, the additional personal property taxes imposed on Pittsburgh
residents by the School District of Pittsburgh and by the City of Pittsburgh.
The City of Pittsburgh, the School District of Pittsburgh and Allegheny County
cannot impose personal property taxes as of January 1, 1995. Trust Units may be
taxable under the Pennsylvania inheritance and estate taxes.

    The proportion of interest income representing interest income from
Pennsylvania Bonds distributed to Unitholders of the Trust is not taxable under
the Pennsylvania Personal Income Tax or under the Corporate Net Income Tax
imposed on corporations by Article IV of the Tax Reform Code. Nor will such
interest be taxable under the Philadelphia School District Investment Income Tax
imposed on Philadelphia resident individuals.

    The disposition by the Trust of a Pennsylvania Bond (whether by sale,
exchange, redemption or payment at maturity) will not constitute a taxable event
to a Unitholder under the Pennsylvania Personal Income Tax if the Pennsylvania
Bond was issued prior to February 1, 1994. Further, although there is no
published authority on the subject, counsel is of the opinion that (i) a
Unitholder of the Trust will not have a taxable event under the Pennsylvania
state and local income taxes referred to in the preceding paragraph (other than
the Corporate Net Income Tax) upon the redemption or sale of his Unit to the
extent that the Trust is then comprised of Pennsylvania Bonds issued prior to
February 1, 1994 and (ii) the dispositions by the Trust of a Pennsylvania Bond
(whether by sale, exchange, redemption or payment at maturity) will not
constitute a taxable event to a Unitholder under the Corporate Net Income Tax or
the Philadelphia School District Investment Income Tax if the Pennsylvania Bond
was issued prior to February 1, 1994. (The School District tax has no
application to gain on the disposition of property held by the taxpayer for more
than six months.)

    Gains on the sale, exchange, redemption, or payment at maturity of a
Pennsylvania Bond issued on or after February 1, 1994, will be taxable under all
of these taxes, as will gains on the redemption or sale of a unit to the extent
that the Trust is comprised of Pennsylvania Bonds issued on or after February 1,
1994.

                               VOLUME INCENTIVES

    The Sponsor has made substantial enhancements to the volume incentive
program for dealer firms currently described in Part B of this Prospectus. The
following information replaces any discussion of volume incentives in Part B.
Volume incentives can be earned as a marketing allowance by eligible dealer
firms who reach cumulative firm sales or sales arrangement levels of a specified
dollar amount of Nuveen unit trusts (other than any series of the Nuveen--The
Dow 5-SM- Portfolios and Nuveen--The Dow 10-SM- Portfolios) sold in the primary
or secondary market during any quarter as set forth in the table below. Eligible
dealer firms are dealers that are providing marketing support for Nuveen unit
trusts in the form of 1) distributing or permitting the distribution of
marketing materials and other product information, 2) providing Nuveen
representatives access to the dealer's branch offices, and 3) generally
facilitating the placement of orders by the dealer's registered representatives
such as putting Nuveen unit trusts on their order entry screens. Eligible firms
will not include firms that solely provide clearing services to broker/dealer
firms. For purposes of determining the applicable volume incentive rate for a
given quarter, the dollar amount of all units sold over the current and three
previous quarters (the "Measuring Period") is aggregated. The volume incentive
received by the dealer firm will equal the dollar amount of units sold during
the current quarter times the highest applicable rate for the Measuring Period.
For firms that meet the necessary volume level, volume incentives may be given
on all applicable trades originated from or by that firm.

<TABLE>
<CAPTION>
       TOTAL DOLLAR AMOUNT SOLD
         OVER MEASURING PERIOD                          VOLUME INCENTIVE
- ---------------------------------------  -----------------------------------------------
<S>                                      <C>
$ 5,000,000 to $ 9,999,999               0.10% of current quarter sales
$10,000,000 to $19,999,999               0.125% of current quarter sales
$20,000,000 to $49,999,999               0.1375% of current quarter sales
$50,000,000 or more                      0.15% of current quarter sales
</TABLE>

    Only sales through the Sponsor qualify for volume incentives and for meeting
minimum requirements. The Sponsor reserves the right to modify or change the
volume incentive schedule at any time and make the determination as to which
firms qualify for the marketing allowance and the amount paid.

                                       7
<PAGE>
                               PURCHASE PROGRAMS

    Notwithstanding anything to the contrary in Part B of the Prospectus:

        1.  Units may NOT be purchased at the Public Offering Price without a
    sales charge by officers or directors and by bona fide, full-time employees
    of Nuveen, Nuveen Advisory Corp., Nuveen Institutional Advisory Corp.,
    Rittenhouse Financial Services, Inc. and The John Nuveen Company, including
    in each case these individuals and their immediate family members (as
    defined in this Prospectus).

        2.  Units may be purchased in the primary market with sales charges of
    1.70% of the Public Offering Price for National and State Long Term Trusts,
    1.35% of the Public Offering Price for Long Intermediate Trusts, 1.20% of
    the Public Offering Price for National and State Intermediate Trusts, 1.0%
    of the Public Offering Price for National and State Short Intermediate
    Trusts and 1.0% of the Public Offering Price for Short Term Trusts by: (1)
    investors who purchase Units through registered investment advisers,
    certified financial planners and registered broker-dealers who in each case
    either charge periodic fees for financial planning, investment advisory or
    asset management services, or provide such services in connection with the
    establishment of an investment account for which a comprehensive "wrap fee"
    charge is imposed, (2) bank trust departments investing funds over which
    they exercise exclusive discretionary investment authority and that are held
    in a fiduciary, agency, custodial or similar capacity; (3) any person who
    for at least 90 days, has been an officer, director or bona fide employee of
    any firm offering Units for sale to investors, (4) officers and directors of
    bank holding companies that make Units available directly or through
    subsidiaries or bank affiliates, (5) officers or directors and bona fide,
    full-time employees of Nuveen, Nuveen Advisory Corp., Nuveen Institutional
    Advisory Corp., Rittenhouse Financial Services, Inc., and The John Nuveen
    Company, including in each case these individuals and their spouses, minor
    children, and parents, however, purchases by parents must be made through a
    registered broker-dealer, and (6) any person who for at least 90 days, has
    been an officer, director or bona fide employee of any vendor who provides
    services to the Sponsor and who purchases Units through a registered
    broker-dealer (collectively, the "Discounted Purchases"). In addition, such
    investors may purchase Units in the secondary market at the Public Offering
    Price for non-breakpoint purchases minus the concession the Sponsor
    typically allows to brokers and dealers for non-breakpoint purchases.
    Notwithstanding anything to the contrary in this Prospectus, investors who
    purchase Units as described in this paragraph will not receive sales charge
    reductions for quantity purchases.

                                       8
<PAGE>

         SCHEDULE OF INVESTMENTS AT THE DATE OF DEPOSIT, JUNE 29, 1999



<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
 Principal         by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's        Price
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   250,000      Pennsylvania Higher Educational Facilities          2009 at 101        AAA         Aaa     $       236,920
                   Authority (Commonwealth of Pennsylvania),
                   Bryn Mawr College Revenue Bonds, Series of
                   1999, 5.125% Due 12/1/29.
    250,000      Allegheny County Sanitary Authority, Allegheny      2007 at 102        AAA         Aaa             246,745
                   County, Pennsylvania, Sewer Revenue Bonds,
                   Series of 1997, 5.375% Due 12/1/24.
    250,000      County of Beaver, Pennsylvania, General             2007 at 100        AAA         Aaa             243,993
                   Obligation Bonds, Series of 1997, 5.30% Due
                   10/1/26.
    200,000      Jim Thorpe Area School District (Carbon County,     2007 at 100        AAA         Aaa             197,784
                   Pennsylvania), General Obligation Bonds,
                   Series A of 1997, 5.375% Due 3/15/22.
    250,000      The Municipal Authority of the Borough of           2008 at 100        AAA         Aaa             241,753
                   Lewistown (Mifflin County, Pennsylvania),
                   Water Revenue Bonds, Series 1998, 5.25% Due
                   1/1/28.
    250,000     * The Philadelphia Parking Authority                 2009 at 101        AAA         Aaa             240,825
                   (Pennsylvania), Airport Parking Revenue
                   Bonds, Series of 1999, 5.25% Due 9/1/29.
                   (When issued.)
     50,000      The Pittsburgh Water and Sewer Authority         No Optional Call      AAA         Aaa              11,297
                   (Pennsylvania), Water and Sewer System First
                   Lien Revenue Bonds, Series B of 1998, 0.00%
                   Due 9/1/26. (Original issue discount bonds
                   delivered on or about March 2, 1998 at a
                   price of 22.836% of principal amount.)
    250,000      South Fork Municipal Authority (Pennsylvania),      2008 at 101        AAA         Aaa             236,785
                   Hospital Revenue Bonds, Series B of 1998
                   (Conemaugh Valley Memorial Hospital Project),
                   5.00% Due 7/1/18.
- -----------                                                                                                 ---------------
$ 1,750,000                                                                                                 $     1,656,102
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>



* These bonds, or a portion thereof, have delivery dates beyond the normal
  settlement date. Their expected delivery date is July 8, 1999. Contracts
  relating to bonds with delivery dates after the date of settlement for
  purchase made on the Date of Deposit constitute approximately 14% of the
  aggregate principal amount of the Trust. (See "COMPOSITION OF TRUSTS" in Part
  B of this Prospectus.)


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


    (1) The Sponsor's contracts to purchase bonds were entered into on June 28,
1999. Other information regarding the bonds in the Trust on the Date of Deposit
is as follows:



<TABLE>
<CAPTION>
                                                           PROFIT (OR
                                              COST TO         LOSS)       ANNUAL INTEREST   BID PRICE
                   TRUST                      SPONSOR      TO SPONSOR     INCOME TO TRUST   OF BONDS
  ----------------------------------------  -----------  ---------------  ---------------  -----------
  <S>                                       <C>          <C>              <C>              <C>
  Pennsylvania Insured Trust 252..........  $ 1,648,557  $       7,545    $     89,000     $ 1,649,427
</TABLE>



In addition, the difference between the Trustee's determination of Offering
Price and Bid Price (as a percentage of principal amount) is .38%. Neither cost
to Sponsor nor profit (or loss) to Sponsor reflects underwriting profits or
losses received or incurred by the Sponsor through its participation in
underwriting syndicates. The Sponsor did not participate as either the sole
underwriter or as a manager or member of a syndicate that acted as the original
underwriter of any of the bonds.


    (2) The bonds are first subject to optional redemption in the years, and at
the prices, shown. Unless otherwise indicated, the bonds, except for bonds
issued at a substantial original issue discount, are redeemable at declining
prices (but not below par value) in subsequent years. Original issue discount
bonds, including zero coupon bonds, are generally redeemable at prices based on
the issue price plus the amount of original issue discount accreted to
redemption plus, if applicable, some premium, the amount of which will decline
in subsequent years. The bonds may also be subject to sinking fund redemption
without premium prior to the dates shown. Certain bonds may be subject to
redemption without premium prior to the date shown pursuant to special or
mandatory call provisions specified in the instruments setting forth the terms
and provisions of such bonds. See "Risk Factors" herein and "COMPOSITION OF
TRUSTS" and "WHAT IS THE TAX STATUS OF UNITHOLDERS?" in Part B of this
Prospectus.

    (3) All the bonds in the Insured Trusts, as insured by the Insurer, are
rated AAA by Standard & Poor's, AAA by Fitch and/or Aaa by Moody's. The
insurance obtained by the Trust guarantees the payment of interest and principal
on the bonds when due but does not cover certain market risks associated with
fixed income securities such as accelerated payments, premiums payable on
mandatory redemptions or interest rate risks. (See "WHY AND HOW ARE THE BONDS
INSURED?" in Part B of this Prospectus and "Description of Ratings" in the
Information Supplement.)

                                       9
<PAGE>

                  STATEMENT OF CONDITION, AS OF JUNE 29, 1999



<TABLE>
<S>                                                 <C>
    TRUST PROPERTY
Sponsor's contracts to purchase bonds, backed by
  an irrevocable letter of credit(1)(2)...........  $    1,656,102
Accrued interest to June 29, 1999 on underlying
  bonds(1)........................................          22,634
Offering costs(3).................................           2,800
                                                    --------------
            Total.................................  $    1,681,536
                                                    --------------
                                                    --------------
   LIABILITIES AND INTEREST OF UNITHOLDERS
LIABILITIES:
    Accrued interest to June 29, 1999 on
     underlying bonds(4)..........................  $       22,634
    Accrued offering costs(3).....................           2,800
                                                    --------------
            Total.................................  $       25,434
                                                    --------------
                                                    --------------
INTEREST OF UNITHOLDERS:
    Units of fractional undivided interest
     outstanding (17,500)
      Cost to investors(5)........................  $    1,741,424
        Less: Gross underwriting commission(6)....          85,322
                                                    --------------
    Net amount applicable to investors............  $    1,656,102
                                                    --------------
            Total.................................  $    1,681,536
                                                    --------------
                                                    --------------
- ------------
</TABLE>


(1) Represented by contracts to purchase bonds which include "when issued" or
    "regular way" or "delayed delivery" contracts for which an irrevocable
    letter of credit issued by a major commercial bank has been deposited with
    the Trustee on the Date of Deposit. The amount of such letter of credit and
    any cash deposited exceeds the amount necessary for the purchase of the
    bonds plus accrued interest to the Date of Deposit. At the Date of Deposit,
    bonds may have been delivered to the Sponsor pursuant to certain of these
    contracts; the Sponsor has assigned to the Trustee all of its rights, title
    and interest in and to such bonds.

(2) Aggregate value (at offering prices) as of the Date of Deposit of the bonds
    listed under "Schedule of Investments" herein, and their aggregate cost to
    the Trust are the same. Such offering prices were determined by Kenny S&P
    Evaluation Services, a division of J. J. Kenny Co., Inc., as of the close of
    business on the business day prior to the Date of Deposit. (See "HOW WAS THE
    PRICE OF THE BONDS DETERMINED AT THE DATE OF DEPOSIT?" in Part B of this
    Prospectus.) Insurance coverage providing for the timely payment, when due,
    of all principal of and interest on the bonds in an Insured Trust has been
    obtained by the Sponsor or by the issuers of such bonds. Such insurance does
    not guarantee the market value of the bonds or the value of the Units. Both
    the bid and the offering prices of the underlying bonds and of the Units may
    include value attributable to such policies of insurance.

(3) The Trust (and therefore Unitholders) will bear all or a portion of its
    estimated offering costs which will be deferred and amortized over five
    years from the Date of Deposit.

(4) Representing, as set forth in "WHAT IS ACCRUED INTEREST?" in Part B of this
    Prospectus, advancement by the Trustee of an amount equal to the accrued
    bond interest as of the Date of Deposit.

(5) Aggregate Public Offering Price (exclusive of accrued interest) computed as
    set forth under "HOW IS THE PUBLIC OFFERING PRICE DETERMINED?" in Part B of
    this Prospectus.

(6) The gross underwriting commission of 4.90% of the Public Offering Price has
    been calculated on the assumption that the Units sold are not subject to a
    reduction of sales charge for quantity purchases. In single transactions
    involving 500 Units or more, the sales charge is reduced. (See "HOW IS THE
    PUBLIC OFFERING PRICE DETERMINED?" in Part B of this Prospectus.)

                                       10
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


TO THE BOARD OF DIRECTORS OF JOHN NUVEEN & CO. INCORPORATED AND UNITHOLDERS OF
PENNSYLVANIA INSURED TRUST 252:



    We have audited the accompanying statement of condition and the schedule of
investments at date of deposit (included in Part A of this Prospectus) of
Pennsylvania Insured Trust 252 (contained in Nuveen Tax-Free Unit Trust, Series
1093), as of June 29, 1999. These financial statements are the responsibility of
the Sponsor. Our responsibility is to express an opinion on these financial
statements based on our audit.


    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. Our procedures included
confirmation of the irrevocable letter of credit arrangement for the purchase of
securities, described in Note (1) to the statement of condition, by
correspondence with the Trustee. An audit also includes assessing the accounting
principles used and significant estimates made by the Sponsor, as well as
evaluating the overall financial statement presentation. We believe that our
audit provides a reasonable basis for our opinion.


    In our opinion, the statement of condition and the schedule of investments
at date of deposit referred to above present fairly, in all material respects,
the financial position of Pennsylvania Insured Trust 252 as of June 29, 1999, in
conformity with generally accepted accounting principles.


                                                             ARTHUR ANDERSEN LLP


Chicago, Illinois
June 29, 1999


                                       11
<PAGE>
[Logo]
Defined Portfolios


                              Nuveen Pennsylvania


Insured Trust 252



                              PROSPECTUS -- PART A
                                 JUNE 29, 1999


<TABLE>
<C>                       <S>        <C>
                 SPONSOR             John Nuveen & Co. Incorporated
                                     333 West Wacker Drive
                                     Chicago, IL 60606-1286
                                     Telephone: 312.917.7700

                                     Swiss Bank Tower
                                     10 East 50th Street
                                     New York, NY 10022
                                     212.207.2000

                 TRUSTEE             The Chase Manhattan Bank
                                     4 New York Plaza
                                     New York, NY 10004-2413
                                     800.257.8787

           LEGAL COUNSEL             Chapman and Cutler
              TO SPONSOR             111 West Monroe Street
                                     Chicago, IL 60603

             INDEPENDENT             Arthur Andersen LLP
                  PUBLIC             33 West Monroe Street
             ACCOUNTANTS             Chicago, IL 60603
          FOR THE TRUSTS
</TABLE>

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

    This Prospectus does not contain complete information about the Unit Trust
filed with the Securities and Exchange Commission in Washington, DC under the
Securities Act of 1933 and the Investment Company Act of 1940.

    To obtain copies at proscribed rates--

<TABLE>
<S>        <C>
Write:     Public Reference Section of the Commission, 450 Fifth Street NW, Washington, DC
           20549-6009
Call:      (800) SEC-0330
Visit:     http://www.sec.gov
</TABLE>

    No person is authorized to give any information or representation about this
Trust not contained in Parts A or B of this Prospectus or the Information
Supplement, and you should not rely on any other information.

    When Units of this Fund are no longer available, this Prospectus may be used
as a preliminary Prospectus for a future series, but some of the information in
this Prospectus will be changed for that series.

    UNITS OF ANY FUTURE SERIES MAY NOT BE SOLD NOR MAY OFFERS TO BUY BE ACCEPTED
UNTIL THAT SERIES HAS BECOME EFFECTIVE WITH THE SECURITIES AND EXCHANGE
COMMISSION. NO UNITS CAN BE SOLD WHERE A SALE WOULD BE ILLEGAL.

<PAGE>
                                            B

<TABLE>
<S>                   <C>
Defined Portfolios

Nuveen Tax-Free Unit Trusts
Prospectus Part B dated September 1, 1998
</TABLE>

    THE  PROSPECTUS FOR A NUVEEN UNIT TRUST IS DIVIDED INTO TWO PARTS. PART A OF
THE PROSPECTUS RELATES EXCLUSIVELY TO  A PARTICULAR TRUST AND PROVIDES  SPECIFIC
INFORMATION  REGARDING  THE TRUST'S  PORTFOLIO, INVESTMENT  OBJECTIVE, EXPENSES,
FINANCIAL HIGHLIGHTS, INTEREST  DISTRIBUTIONS, ESTIMATED  RETURNS, RISK  FACTORS
and  tax  status. Part  B of  the Prospectus  provides more  general information
regarding the Nuveen  Tax-Free Unit Trusts.  You should read  both Parts of  the
Prospectus and retain them for future reference. Except as provided in Part A of
the  Prospectus, the  information contained  in this Part  B will  apply to each
Trust.

    Additional information  about  the Trusts  is  provided in  the  Information
Supplement.  You  can receive  an Information  Supplement  by calling  The Chase
Manhattan Bank (the "TRUSTEE") at (800) 257-8787.

NUVEEN DEFINED PORTFOLIOS

TAX-FREE INCOME.   Each Nuveen  Tax-Free Unit  Trust consists  of a  diversified
portfolio  of municipal bonds. (See  "Schedule of Investments" in  Part A of the
Prospectus for a list of the Bonds included in a Trust.) Under existing law, the
interest income to a Trust and to Unitholders is exempt from federal income tax.
In addition, interest income of a State Trust is exempt to the extent  indicated
in Part A of the Prospectus from state and, in some cases, local income taxes.

INSURED TRUSTS.  All Bonds in each Nuveen Insured Trust are covered by insurance
policies  obtained from MBIA Insurance Corporation. These policies guarantee the
payment of  principal  and interest  when  due. The  insurance  policies  remain
effective  for the entire life of a Bond. Because of the insurance, the Bonds in
an Insured Trust receive a "AAA" rating from Standard & Poor's Ratings  Service,
a  division of The  McGraw-Hill Companies, Inc. ("STANDARD  & POOR'S") and Fitch
IBCA, Inc. ("FITCH") and "Aaa"  by Moody's Investors Service, Inc.  ("MOODY'S").
Please  note that the insurance relates only  to the Bonds in the Insured Trusts
and not to the Units or the market value of the Units. (See "Why and How are the
Bonds Insured?")

TRADITIONAL TRUSTS.  Each Traditional Trust consists of a diversified  portfolio
of Bonds rated in the category of "A" or better by Standard & Poor's, Moody's or
Fitch.

MINIMUM INVESTMENT--$5,000 or 50 Units, whichever is less.

REDEEMABLE UNITS.  Units of a Trust are redeemable at the offices of the Trustee
at  prices  based upon  the bid  prices of  the  Bonds. (See  "How Units  May be
Redeemed Without Charge.")

DISTRIBUTIONS.  Interest received by a Trust will be paid semi-annually,  unless
you  elect to receive distributions monthly or quarterly. Distributions of funds
in the principal account will ordinarily  be made semi-annually. (See "When  are
Distributions Made to Unitholders?")

PUBLIC  OFFERING PRICE.   Public  Offering Price of  a Trust  during the Initial
Offering Period is based upon the offering prices of the Bonds in the Trust plus
an upfront sales charge. For Units purchased in the secondary market, the Public
Offering Price is based upon the bid  prices of the Bonds in the Trust.  Accrued
interest  on the Bonds in  the Portfolio from the  preceding Record Date to, but
not including, the Settlement Date (normally three business days after purchase)
is added to the Public  Offering Price. (See "How  is the Public Offering  Price
Determined?")

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

    THE  SECURITIES AND EXCHANGE  COMMISSION HAS NOT  APPROVED OR DISAPPROVED OF
THESE  SECURITIES  OR  PASSED  UPON   THE  ADEQUACY  OF  THIS  PROSPECTUS.   ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>

<TABLE>
<CAPTION>
      TABLE OF CONTENTS                                  PAGE
<C>   <S>                                                <C>
      WHAT IS THE NUVEEN TAX-FREE UNIT TRUST?            4
      WHAT ARE THE OBJECTIVES OF THE TRUSTS?             4
      SUMMARY OF PORTFOLIOS                              4
      COMPOSITION OF TRUSTS                              6
      WHY AND HOW ARE THE BONDS INSURED?                 8
      HOW IS THE PUBLIC OFFERING PRICE DETERMINED?       9
      MARKET FOR UNITS                                   12
      WHAT IS ACCRUED INTEREST?                          12
      WHAT ARE ESTIMATED LONG TERM RETURN AND ESTIMATED
      CURRENT RETURN?                                    13
      HOW WAS THE PRICE OF THE BONDS DETERMINED AT THE
      DATE
      OF DEPOSIT?                                        14
      WHAT IS THE TAX STATUS OF UNITHOLDERS?             14
      WHAT ARE NORMAL TRUST OPERATING EXPENSES?          17
      WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?        18
      ACCUMULATION PLAN                                  19
      HOW DETAILED ARE REPORTS TO UNITHOLDERS?           19
      UNIT VALUE AND EVALUATION                          19
      HOW UNITS OF THE TRUSTS ARE DISTRIBUTED TO THE
      PUBLIC                                             20
      OWNERSHIP AND TRANSFER OF UNITS                    21
      HOW UNITS MAY BE REDEEMED WITHOUT CHARGE           22
      HOW UNITS MAY BE PURCHASED BY THE SPONSOR          23
      HOW BONDS MAY BE REMOVED FROM THE TRUSTS           23
      INFORMATION ABOUT THE TRUSTEE                      23
      INFORMATION ABOUT THE SPONSOR                      24
      OTHER INFORMATION                                  25
</TABLE>

                                       2
<PAGE>
  J  Tax-Free Unit Trusts

<TABLE>
<CAPTION>
      TOPICAL INDEX                                              PAGE
<C>   <S>                                               <C>      <C>
      Accrued Interest                                           12
      Accumulation Plan                                          19
                                                           Information
      Bond Ratings, Description of                         Supplement
      Bonds, Initial Determination of Offering Price             14
      Bonds, How Selected                                        4
      Bonds, Limited Right of Substitution                       7
      Bonds, Removal from a Trust                                23
      Call Provisions of Portfolio Bonds                         7
      Capital Gains Taxability                                   14
      Composition of Trusts                                      6
      Dealer Discounts                                           20
      Distributions to Unitholders                               18
                                                                 Part
      Distribution Payment Dates                                 A,18
      Distribution of Units to the Public                        20
      Essential Information Regarding the Trusts                 Part A
                                                                 Part
      Estimated Long Term Return and Estimated Current Return    A,13
      Evaluation                                                 19
      Expenses for Normal Trust Operation                        17
      Indenture, Amendment of                                    25
      Indenture, Termination of                                  25
      Insurance on the Bonds                                     8
                                                                 Part
      Interest Account Distributions                             A,18
      Legal Opinion                                              25
      Limitations on Liabilities of Sponsor and Trustee          24
      Market for Units                                           12
      Minimum Transaction                                        20
      Objectives of the Trusts                                   4
      Optional Distribution Plan                                 18
      Other Information                                          25
      Ownership and Transfer of Units                            21
      Principal Account Distributions                            18
      Public Offering Price of Units                             9
      Purchase of Units by Sponsor                               23
      Quantity Purchases                                         9
                                                                 Part
      Record Dates                                               A,18
      Redemption of Units Without Charge                         22
      Report of Independent Public Accountants                   Part A
      Reports to Unitholders                                     19
      RISK FACTORS                                               Part A
      Sales Charge                                               10
      Schedules of Investments                                   Part A
      Sponsor, Information About                                 24
      State Tax Status                                           Part A
      Statements of Condition                                    Part A
      Successor Trustees and Sponsors                            24
      Supplemental Information                                   25
      Tax Status of Unitholders                                  14
      Trustee, Information About                                 23
      Units, Description of                                      4
</TABLE>

                  3
<PAGE>
WHAT IS THE NUVEEN TAX-FREE UNIT TRUST?

This  Nuveen Tax-Free  Unit Trust  is one  of a  series of  separate but similar
investment companies created by  the Sponsor, each of  which is designated by  a
different Series number. The underlying unit investment trusts contained in this
Series   are  combined  under  one   Trust  Indenture  and  Agreement.  Specific
information regarding this Trust is set forth in Part A of this Prospectus.  The
various  Nuveen Tax-Free Unit Trusts are  collectively referred to herein as the
"Trusts"; the trusts in which few or none of the Bonds are insured are sometimes
referred to as the "Traditional  Trusts," the trusts in  which all of the  Bonds
are  insured  as described  herein  are sometimes  referred  to as  the "Insured
Trusts," and  the state  trusts  (both Traditional  and Insured)  are  sometimes
referred to as the "State Trusts." This Series was created under the laws of the
State  of New York pursuant to a Trust Indenture and Agreement dated the Date of
Deposit (the "Indenture") between  John Nuveen &  Co. Incorporated ("Nuveen"  or
the "Sponsor") and The Chase Manhattan Bank (the "Trustee").

    Sponsor  has  deposited with  the  Trustee delivery  statements  relating to
contracts for the  purchase of  municipal debt obligations  together with  funds
represented by an irrevocable letter of credit issued by a major commercial bank
in  the amount, including accrued interest,  required for their purchase (or the
obligations themselves) (the "Bonds"). See  "Schedule of Investments" in Part  A
of  this Prospectus, for  a description of  the Bonds deposited  in a Trust. See
"SUMMARY OF PORTFOLIOS" herein  and "RISK FACTORS" in  Part A of the  Prospectus
for  a discussion of zero coupon bonds  and stripped obligations included in the
Trusts, if any. Some of the delivery statements may relate to contracts for  the
purchase  of "when issued" or other Bonds  with delivery dates after the date of
settlement for a  purchase made on  the Date  of Deposit. See  the "Schedule  of
Investments"  in Part A  of this Prospectus  and "COMPOSITION OF  TRUSTS." For a
discussion of  the  Sponsor's obligations  in  the event  of  a failure  of  any
contract  for  the  purchase  of any  of  the  Bonds and  its  limited  right to
substitute other  bonds to  replace  any failed  contract, see  "COMPOSITION  OF
TRUSTS."

    Payment  of interest on the Bonds in each Insured Trust, and of principal at
maturity, is guaranteed under policies of  insurance obtained by the Sponsor  or
by  the issuers of  the Bonds. (See "WHY  AND HOW ARE THE  BONDS INSURED?") AS A
GENERAL MATTER, NEITHER THE ISSUER NOR  THE SPONSOR HAS OBTAINED INSURANCE  WITH
RESPECT TO THE BONDS IN ANY TRADITIONAL TRUST.

    The  Trustee has delivered  to the Sponsor  registered Units which represent
ownership of  the  entire  Trust,  and  which  are  offered  for  sale  by  this
Prospectus.  Each Unit of a Trust  represents a fractional undivided interest in
the principal and net income of such Trust in the ratio set forth in  "Essential
Information"  in Part A of this Prospectus. Units  may only be sold in states in
which they  are registered.  To  the extent  that any  Units  of any  Trust  are
redeemed by the Trustee, the aggregate value of the Trust's assets will decrease
by  the amount  paid to the  redeeming Unitholder, but  the fractional undivided
interest of each unredeemed  Unit in such  Trust will increase  proportionately.
The  Sponsor will  initially, and  from time to  time thereafter,  hold Units in
connection with their offering.

WHAT ARE THE OBJECTIVES OF THE TRUSTS?

The objectives of the Trusts are income  exempt from Federal income tax and,  in
the  case of State Trusts, where applicable, state income and intangibles taxes,
and conservation of capital, through an  investment in obligations issued by  or
on  behalf of states  and territories of  the United States  and authorities and
political subdivisions thereof,  the interest  on which  is, in  the opinion  of
recognized  bond counsel  to the  issuing governmental  authorities, exempt from
Federal income tax under existing law  and for State Trusts, from certain  state
income  taxes  and intangibles  taxes,  if any,  for  purchasers who  qualify as
residents of that State  in which Bonds are  issued. Insurance guaranteeing  the
timely  payment, when due,  of all principal  and interest on  the Bonds in each
Insured Trust has been obtained by the  Sponsor or by the issuers of such  Bonds
from  MBIA Insurance Corporation, and as a result of such insurance the Bonds in
the Insured Trusts are rated  "Aaa" by Moody's, "AAA"  by Fitch and/or "AAA"  by
Standard & Poor's. (See "WHY AND HOW ARE THE BONDS INSURED?") All obligations in
each  Traditional Trust are rated in the category  "A" or better (SP-1, MIG 2 or
F-2 or better, respectively, in the case of short term obligations included in a
Short Term  Traditional  Trust)  by  Standard &  Poor's,  Moody's  and/or  Fitch
(including  provisional or conditional  ratings). In addition,  certain Bonds in
certain Traditional Trusts may be  covered by insurance guaranteeing the  timely
payment,  when  due, of  all principal  and  interest. There  is, of  course, no
guarantee that the Trusts' objectives will be achieved. For a comparison of  net
after-tax return for various tax brackets, see the "TAXABLE EQUIVALENT ESTIMATED
CURRENT  RETURN TABLES" included in the Appendices to the Information Supplement
of this Prospectus.

SUMMARY OF PORTFOLIOS

In selecting  Bonds for  the  respective Trusts,  the following  factors,  among
others, were considered: (i) the Standard & Poor's, Moody's and/or Fitch ratings
of  the Bonds (see "WHAT ARE THE OBJECTIVES OF THE TRUSTS?" for a description of
minimum rating standards), (ii) the prices of the Bonds relative to other  bonds
of  comparable quality  and maturity, (iii)  the diversification of  Bonds as to
purpose of issue and location of issuer,  (iv) the maturity dates of the  Bonds,
and  (v)  in the  case  of the  Insured Trusts  only,  the availability  of MBIA
Insurance Corporation insurance on such Bonds.  (See "WHY AND HOW ARE THE  BONDS
INSURED?")

                                       4
<PAGE>
Each Trust consists of municipal bonds. As set forth in "RISK FACTORS" in Part A
of  this Prospectus, the Trusts may contain or be concentrated in one or more of
the types of  bonds discussed  below. The following  paragraphs briefly  discuss
certain circumstances which may adversely affect the ability of issuers of Bonds
held  in the portfolio of a Trust to  make payments of principal and interest or
the ratings of such Bonds. For economic risks specific to the individual Trusts,
see "RISK  FACTORS" in  Part A  of this  Prospectus and  the Appendices  to  the
Information Supplement of this Prospectus.

    ESCROW  SECURED OBLIGATIONS are  typically secured by  direct obligations of
the U.S.  Government  or  in  some cases  obligations  guaranteed  by  the  U.S.
Government  placed in  an escrow  account maintained  by an  independent trustee
until maturity  or  a  predetermined  redemption  date.  These  obligations  are
generally noncallable prior to maturity or the predetermined redemption date. In
a  few isolated instances, however,  bonds which were thought  to be escrowed to
maturity have been called for redemption prior to maturity.

    HEALTH CARE FACILITY OBLIGATIONS are  obligations of issuers whose  revenues
are derived from services provided by hospitals or other health care facilities,
including  nursing  homes. The  ability  of such  issuers  to make  debt service
payments on  these  obligations  is  dependent  on  various  factors,  including
occupancy  levels  of the  facility, demand  for  services, wages  of employees,
overhead  expenses,  competition  from   other  similar  providers,   government
regulation,  the cost of  malpractice insurance, and  the degree of governmental
financial assistance, including Medicare and Medicaid.

    HOUSING OBLIGATIONS are obligations of issuers whose revenues are  primarily
derived  from mortgage loans on single family residences or housing projects for
low to moderate income families. Housing obligations are generally prepayable at
any time and  therefore their average  life will ordinarily  be less than  their
stated  maturities. The ability of such issuers to make debt service payments on
these obligations is dependent on  various factors, including occupancy  levels,
rental  income, mortgage default rates,  taxes, operating expenses, governmental
regulations and the appropriation of subsidies.

    INDUSTRIAL  REVENUE  OBLIGATIONS  are  industrial  revenue  bonds  ("IRBs"),
including  pollution  control  revenue bonds,  which  are  tax-exempt securities
issued by  states, municipalities,  public authorities  or similar  entities  to
finance  the  cost of  acquiring, constructing  or improving  various industrial
projects. Debt  service  payment on  IRBs  is dependent  upon  various  factors,
including  the creditworthiness of the corporate operator of the project and, if
applicable, corporate guarantor, revenues  generated from the project,  expenses
associated with the project and regulatory and environmental restrictions.

    UTILITY  OBLIGATIONS are obligations of issuers whose revenues are primarily
derived from the sale of several types of energy, including electric and natural
gas. The  ability  of  such issuers  to  make  debt service  payments  on  these
obligations is dependent on various factors, including the rates for electricity
and  natural gas,  the demand  for electricity  and natural  gas, the  degree of
competition, governmental regulation, overhead expenses and variable costs, such
as fuel.

    TRANSPORTATION FACILITY REVENUE OBLIGATIONS are obligations of issuers which
are payable  from  and  secured  by revenues  derived  from  the  ownership  and
operation  of airports, public transit systems and ports. The ability of issuers
to make  debt  service payments  on  airport  obligations is  dependent  on  the
capability  of airlines to  meet their obligations under  use agreements. Due to
increased competition,  deregulation, increased  fuel costs  and other  factors,
many  airlines may  have difficulty  meeting their  obligations under  these use
agreements. Bonds  that are  secured primarily  by the  revenue collected  by  a
public  transit system typically  are additionally secured by  a pledge of sales
tax receipts collected  at the state  or local level,  or of other  governmental
financial  assistance. The revenue of issuers of transit system obligations will
be affected by variations in utilization, which  in turn may be affected by  the
degree  of  local governmental  subsidization, competition  from other  forms of
transportation, and  increased costs.  Port  authorities derive  their  revenues
primarily  from fees imposed  on ships using the  facilities which may fluctuate
depending on  the local  economy  and on  competition  from competing  forms  of
transportation  such  as air,  rail and  trucks. The  revenues of  issuers which
derive their  payments  from bridge,  road  or  tunnel toll  revenues  could  be
adversely  affected  by  increases  in fuel  costs,  competition  from toll-free
vehicular bridges and roads and alternative modes of transportation.

    WATER AND/OR SEWERAGE OBLIGATIONS are obligations of issuers whose  revenues
are  payable from user fees from the sale of water and/or sewerage services. The
problems  of  such  issuers  include  the  ability  to  obtain  rate  increases,
population  declines,  the limitations  on  operations and  increased  costs and
delays attributable to environmental considerations, the difficulties  obtaining
new supplies of fresh water, the effect of conservation programs and "no-growth"
zoning ordinances.

    UNIVERSITY  AND COLLEGE REVENUE OBLIGATIONS are obligations of issuers whose
revenues are  derived  mainly  from  tuition,  dormitory  revenues,  grants  and
endowments.  General  problems faced  by such  issuers  include declines  in the
number of "college" age  individuals, possible inability  to raise tuitions  and
fees,  the uncertainty of continued receipt of Federal grants and state funding,
and government  legislation  or  regulations  which  may  adversely  affect  the
revenues or costs of such issuers.

    DEDICATED-TAX  SUPPORTED OBLIGATIONS  are obligations  of issuers  which are
payable from  and  secured by  tax  revenues  from a  designated  source,  which
revenues  are pledged to secure the bonds.  The various types of Bonds described

                                       5
<PAGE>
below differ in structure and with respect  to the rights of the bondholders  to
the  underlying property. Each type of dedicated-tax supported Bond has distinct
risks, only  some  of which  are  set forth  below.  One type  of  dedicated-tax
supported  Bond  is  secured by  the  incremental  tax received  on  either real
property or on sales within a  specifically defined geographical area; such  tax
generally will not provide bondholders with a lien on the underlying property or
revenues.  Another type of dedicated-tax supported  Bond is secured by a special
tax levied on real property within a defined geographical area in such a  manner
that  the  tax is  levied  on those  who benefit  from  the project;  such bonds
typically provide for  a statutory lien  on the underlying  property for  unpaid
taxes.  A third  type of dedicated-tax  supported Bond  may be secured  by a tax
levied upon the  manufacture, sale  or consumption  of commodities  or upon  the
license  to pursue  certain occupations  or upon  corporate privileges  within a
taxing jurisdiction. As  to any  of these  types of  Bonds, the  ability of  the
designated revenues to satisfy the interest and principal payments on such bonds
may  be affected by changes  in the local economy,  the financial success of the
enterprise responsible for the payment of  the taxes, the value of any  property
on which taxes may be assessed and the ability to collect such taxes in a timely
fashion.  Each of these  factors will have  a different affect  on each distinct
type of dedicated-tax supported bonds.

    MUNICIPAL LEASE  OBLIGATIONS  are  obligations that  are  secured  by  lease
payments  of a  governmental entity  and are  normally subject  to annual budget
appropriations of the  leasing governmental entity.  A governmental entity  that
enters  into  such  a  lease agreement  cannot  obligate  future  governments to
appropriate for and make lease payments but covenants to take such action as  is
necessary  to include  any lease  payments due  in its  budgets and  to make the
appropriations therefor. A governmental entity's failure to appropriate for  and
to  make payments under its lease  obligation could result in insufficient funds
available for payment of the obligations secured thereby.

    ORIGINAL ISSUE DISCOUNT OBLIGATIONS AND STRIPPED OBLIGATIONS are bonds which
were issued with  nominal interest  rates less than  the rates  then offered  by
comparable  securities and as  a consequence were originally  sold at a discount
from their face,  or par,  values. In a  stable interest  rate environment,  the
market  value of  an original  issue discount bond  would tend  to increase more
slowly in early years and in greater increments as the bond approached maturity.

    Certain of the original  issue discount obligations in  a Trust may be  zero
coupon  bonds. Zero coupon bonds  do not provide for  the payment of any current
interest; the buyer receives only  the right to receive  a final payment of  the
face  amount  of the  bond at  its maturity.  Zero coupon  bonds are  subject to
substantially greater  price  fluctuations  during periods  of  changing  market
interest  rates  than are  securities of  comparable  quality that  pay interest
currently.

    Original issue discount  obligations, including  zero coupon  bonds, may  be
subject  to redemption  at prices based  on the  issue price plus  the amount of
original issue discount accreted to  redemption (the "accreted value") plus,  if
applicable,  some premium. Pursuant  to such call  provisions, an original issue
discount bond may be called prior to its maturity date at a price less than  its
face  value.  See the  "Schedule of  Investments"  appearing in  Part A  of this
Prospectus for more information about the call provisions of portfolio Bonds.

    Certain of the Bonds in a Trust may be stripped obligations, which represent
evidences of  ownership with  respect to  either the  principal amount  of or  a
payment  of interest on  a tax-exempt obligation  ("Stripped Obligations"). Each
Stripped Obligation has been purchased at a discount from the amount payable  at
maturity.  A Stripped Obligation therefore  has economic characteristics similar
to zero coupon bonds, as described above.

    Unitholders should consult their own tax advisers with respect to the  state
and  local tax consequences of owning  original issue discount bonds or Stripped
Obligations. Under applicable  provisions governing determination  of state  and
local  taxes,  interest  on  original  issue  discount  obligations  or Stripped
Obligations may be  deemed to be  received in  the year of  accrual even  though
there is no corresponding cash payment.

COMPOSITION OF TRUSTS

Each  Trust initially consists  of delivery statements  relating to contracts to
purchase Bonds (or of such Bonds) as are listed under "Schedule of  Investments"
in  Part A of this Prospectus and, thereafter,  of such Bonds as may continue to
be held from time to time  (including certain securities deposited in the  Trust
in  substitution  for  Bonds  not  delivered  to  a  Trust  or  in  exchange  or
substitution for  Bonds  upon certain  refundings),  together with  accrued  and
undistributed   interest  thereon  and  undistributed  cash  realized  from  the
disposition of Bonds.

    "WHEN-ISSUED"  AND  "DELAYED  DELIVERY"  TRANSACTIONS.    The  contracts  to
purchase  Bonds delivered to  the Trustee represent an  obligation by issuers or
dealers to deliver Bonds to  the Sponsor for deposit  in the Trusts. Certain  of
the  contracts relate  to Bonds  which have not  been issued  as of  the Date of
Deposit and which are commonly referred to as "when issued" or "when, as and  if
issued"  Bonds. Although  the Sponsor  believes it  unlikely, if  such Bonds, or
replacement bonds  described below,  are not  acquired by  a Trust  or if  their
delivery  is  delayed, the  Estimated Current  Returns  and Estimated  Long Term
Returns shown  in Part  A of  this Prospectus  may be  reduced. Certain  of  the
contracts for the purchase of Bonds provide for delivery dates after the date of
settlement  for purchases made  on the Date  of Deposit. Interest  on such "when
issued" and  "delayed delivery"  Bonds  accrues to  the benefit  of  Unitholders
commencing with the first settlement

                                       6
<PAGE>
date for the Units. However, in the opinion of counsel, Unitholders who purchase
their  Units prior to the date such  Bonds are actually delivered to the Trustee
must reduce the tax  basis of their  Units for interest  accruing on such  Bonds
during  the interval  between their  purchase of Units  and the  delivery of the
Bonds because such amounts constitute a return of principal. As a result of such
adjustment, the Estimated Current Returns set forth in Part A of this Prospectus
(which are based on the  Public Offering Price as of  the business day prior  to
the  Date of  Deposit) may  be slightly lower  than that  which Unitholders will
receive after  the  first year,  assuming  the  Portfolio does  not  change  and
estimated  annual expense  does not  vary from  that set  forth under "Essential
Information" in Part A of this  Prospectus. Those Bonds in each Trust  purchased
with  delivery dates after the date of settlement for purchases made on the Date
of Deposit are  so noted  in the  "Schedule of Investments"  in Part  A of  this
Prospectus.

    LIMITED  REPLACEMENT OF CERTAIN BONDS.   Neither the Sponsor nor the Trustee
shall be liable in any  way for any default, failure  or defect in any Bond.  In
the  event of a failure to deliver any  Bond that has been purchased for a Trust
under a contract, including those  Bonds purchased on a  when, as and if  issued
basis  ("Failed Bonds"), the Sponsor is authorized under the Indenture to direct
the Trustee to acquire  other specified Bonds ("Replacement  Bonds") to make  up
the  original corpus of the Trust within 20 days after delivery of notice of the
failed contract and the  cost to the Trust  (exclusive of accrued interest)  may
not  exceed the amount of  funds reserved for the  purchase of the Failed Bonds.
The Replacement Bonds  must satisfy  the criteria previously  described for  the
Trusts  and shall be substantially identical to the Failed Bonds they replace in
terms of (i) the exemption from  federal and state taxation; (ii) maturity  and;
(iii)  cost to the Trust. In addition,  Replacement Bonds shall not be "when, as
and if issued" Bonds. Whenever a Replacement Bond has been acquired for a Trust,
the Trustee shall, within five days after the delivery thereof, mail or  deliver
a  notice of such acquisition to all Unitholders of the Trust involved. Once the
original corpus of the Trust is acquired, the Trustee will have no power to vary
the investment of the Trust.

    To the extent Replacement Bonds are  not acquired, the Sponsor shall  refund
to  all Unitholders of the Trust involved  the sales charge attributable to such
Failed Bonds not replaced, and  the principal and accrued interest  attributable
to such Bonds shall be distributed not more than 30 days after the determination
of  such failure or at  such earlier time as the  Trustee in its sole discretion
deems to be in the interest of  the Unitholders. Any such accrued interest  paid
to Unitholders will be paid by the Sponsor and, accordingly, will not be treated
as  tax-exempt  income.  In the  event  Failed Bonds  in  a Trust  could  not be
replaced, the  Net Annual  Interest Income  per  Unit for  such Trust  would  be
reduced and the Estimated Current Return thereon might be lowered.

    SALE,  MATURITY AND REDEMPTION OF BONDS.  Certain of the Bonds may from time
to time  under certain  circumstances be  sold  or redeemed  or will  mature  in
accordance  with their terms. The proceeds from  such events will be used to pay
for  Units  redeemed   or  distributed  to   Unitholders  and  not   reinvested;
accordingly,  no assurance can be given that  a Trust will retain for any length
of time its present size and composition.

    All of the Bonds in  each Trust are subject to  being called or redeemed  in
whole  or in  part prior  to their  stated maturities  pursuant to  the optional
redemption provisions described in  the "Schedule of Investments"  in Part A  of
this  Prospectus and  in most  cases pursuant  to a  sinking fund  or special or
extraordinary redemption provisions. See the discussion of the various types  of
bond  issues,  above, for  information  on the  call  provisions of  such bonds,
particularly single family  mortgage revenue  bonds. Certain Bonds  may carry  a
"mandatory  put"  (also  referred  to  as  a  "mandatory  tender"  or "mandatory
repurchase") feature pursuant  to which the  holder of such  Bonds will  receive
payment  of the  full principal  amount thereof  on a  stated date  prior to the
maturity date unless  such holder  affirmatively acts  to retain  the Bond.  The
Trustee  does not have the authority to  act to retain Bonds with such features;
accordingly, it will receive  payment of the full  principal amount of any  such
Bonds  on the stated put date and such date is therefore treated as the maturity
date of such Bonds in selecting Bonds for the respective Trusts and for purposes
of calculating the average maturity of the Bonds in any Trust.

    The exercise of redemption or call provisions will (except to the extent the
proceeds of the called Bonds are used to pay for Unit redemptions) result in the
distribution of  principal  and may  result  in a  reduction  in the  amount  of
subsequent  interest distributions;  it may  also affect  the current  return on
Units of the Trust  involved. The exercise of  redemption or call provisions  is
more  likely  to occur  in  situations where  the  Bonds have  an  offering side
evaluation which represents a  premium over par (as  opposed to a discount  from
par).  (In  the  case  of  original issue  discount  bonds,  such  redemption is
generally to  be made  at the  issue price  plus the  amount of  original  issue
discount accreted to the date of redemption; such price is referred to herein as
"accreted  value"). Because Bonds may have been  valued at prices above or below
par value or the then current accreted  value at the time Units were  purchased,
Unitholders  may realize  gain or loss  upon the redemption  of portfolio Bonds.
(See "WHAT IS THE TAX STATUS  OF UNITHOLDERS?" and "WHEN ARE DISTRIBUTIONS  MADE
TO  UNITHOLDERS?" in Part B and the "Schedule  of Investments" in Part A of this
Prospectus.)

    CERTAIN TAX  MATTERS;  LITIGATION.    Certain of  the  Bonds  in  a  Trust's
portfolio  may be subject to continuing requirements regarding the actual use of
bond proceeds,  the  manner of  operation  of  the project  financed  from  bond
proceeds  or the rebate  of excess earnings  on bond proceeds,  any of which may
affect   the   exemption    of   interest   on    such   Bonds   from    Federal

                                       7
<PAGE>
income  taxation. Although at the time of issuance  of each of the Bonds in each
Trust an opinion of bond counsel was rendered as to the exemption of interest on
such obligations from  Federal income  taxation, and the  issuers covenanted  to
comply  with all requirements  necessary to retain the  tax-exempt status of the
Bonds, there can be no assurance  that the respective issuers or other  obligors
on such obligations will fulfill the various continuing requirements established
upon issuance of the Bonds. A failure to comply with such requirements may cause
a  determination that interest on such  obligations is subject to Federal income
taxation, perhaps even retroactively  from the date of  issuance of such  Bonds,
thereby   reducing  the  value  of  the  Bonds  and  subjecting  Unitholders  to
unanticipated tax liabilities.

    To the best knowledge of the Sponsor,  there is no litigation pending as  of
the  Date of Deposit in respect of  any Bonds which might reasonably be expected
to have a  material adverse effect  on any of  the Trusts. It  is possible  that
after  the Date of Deposit, litigation may be initiated with respect to Bonds in
any Trust. Any  such litigation may  affect the  validity of such  Bonds or  the
tax-exempt  nature of the interest thereon,  but while the outcome of litigation
of such nature can never be entirely predicted, the opinions of bond counsel  to
the  issuer of  each Bond  on the date  of issuance  state that  such Bonds were
validly issued and that the interest thereon is, to the extent indicated, exempt
from Federal income tax.

WHY AND HOW ARE THE BONDS INSURED?

Insurance guaranteeing  the  timely payment,  when  due, of  all  principal  and
interest  on the Bonds in each Insured Trust has been obtained by the Sponsor or
by the issuers or underwriters of the Bonds from the MBIA Insurance  Corporation
(the  "Insurer"). Certain of the  Bonds in an Insured Trust  may be covered by a
policy or policies of insurance obtained  by the issuers or underwriters of  the
Bonds  from  Municipal Bond  Insurance Association  (the "Association")  or Bond
Investors Guaranty Insurance Company ("BIG"). The claims-paying ability of  both
the  Insurer  and the  Association was  rated  "AAA Prime  Grade" by  Standard &
Poor's. Moody's  rates all  bond issues  insured by  either the  Insurer or  the
Association  "Aaa" and short-term loans "MIG  1." Fitch, upon request, rates all
bond issues insured by the Insurer or the Association "AAA" and short-term loans
"F-1." All such ratings designate the highest quality. The Insurer has issued  a
policy  or  policies of  insurance covering  each  of the  Bonds in  the Insured
Trusts, each policy to remain in force  until the payment in full of such  Bonds
and  whether or not  the Bonds continue to  be held by an  Insured Trust. By the
terms of each policy the Insurer  will unconditionally guarantee to the  holders
or  owners of  the Bonds the  payment, when due,  required of the  issuer of the
Bonds of an amount equal to the principal  of and interest on the Bonds as  such
payments  shall become  due but  not be paid  (except that  in the  event of any
acceleration of the  due date of  principal by reason  of mandatory or  optional
redemption,  default or otherwise, the payments  guaranteed will be made in such
amounts and  at  such times  as  would  have been  due  had there  not  been  an
acceleration).

    Insurance  guaranteeing the timely  payment, when due,  of all principal and
interest on certain Bonds in a Traditional  Trust may have been obtained by  the
Sponsor,  issuer or underwriter  of the particular Bonds  involved or by another
party. Such insurance, which  provides coverage substantially  the same as  that
obtained  with  respect  to  Bonds  in Insured  Trusts  as  described  above, is
effective so long as the insured Bond is outstanding and the insurer remains  in
business.  Insurance relates only  to the particular  Bond and not  to the Units
offered hereby or to their market value. Insured Bonds have received a rating of
"Aaa" by  Moody's,  "AAA"  by  Fitch  and/or  "AAA"  by  Standard  &  Poor's  in
recognition of such insurance.

    If  a Bond in a Traditional Trust  is insured, the "Schedule of Investments"
appearing in Part A of this Prospectus  will identify the insurer. There can  be
no  assurance  that any  insurer  listed therein  will  be able  to  satisfy its
commitments in the  event claims  are made in  the future.  However, Standard  &
Poor's,  Fitch  and/or  Moody's have  rated  the claims-paying  ability  of each
insurer "AAA," "AAA" or "Aaa," respectively.

    The Insurer is the principal operating subsidiary of MBIA, Inc., a New  York
Stock  Exchange listed company. MBIA, Inc. is  not obligated to pay the debts of
or claims against the Insurer. The Insurer is domiciled in the State of New York
and licensed to do business in and  subject to regulation under the laws of  all
50  states,  the District  of  Columbia, the  Commonwealth  of Puerto  Rico, the
Commonwealth of the Northern Mariana Islands,  the Virgin Islands of the  United
States  and the Territory of Guam. The Insurer has two European branches, one in
the Republic of France and the other in the Kingdom of Spain. New York has  laws
prescribing minimum capital requirements, limiting classes and concentrations of
investments  and requiring  the approval of  policy rates and  forms. State laws
also regulate the amount of both the aggregate and individual risks that may  be
insured,  the  payment  of dividends  by  the  insurer, changes  in  control and
transactions among affiliates. Additionally, the Insurer is required to maintain
contingency reserves  on its  liabilities  in certain  amounts and  for  certain
periods of time.

    Effective  February 17,  1998, MBIA,  Inc. acquired  all of  the outstanding
stock of Capital Markets  Assurance Corporation ("CMAC"),  a New York  domiciled
financial  guarantee insurance company, through a merger with its parent, CapMAC
Holdings, Inc. Pursuant to  a reinsurance agreement, CMAC  has ceded all of  its
net  insured  risks  (including any  amounts  due  but unpaid  from  third party
reinsurers), as well as its unearned  premiums and contingency reserves, to  the
Insurer.  The Company  is not obligated  to pay  the debts of  or claims against
CMAC.

                                       8
<PAGE>
    As of December  31, 1997  the Insurer had  admitted assets  of $5.3  billion
(audited),  total liabilities of  $3.5 billion (audited),  and total capital and
surplus of  $1.8  billion  (audited) determined  in  accordance  with  statutory
accounting   practices   prescribed   or  permitted   by   insurance  regulatory
authorities. As  of March  31, 1998,  the Insurer  had admitted  assets of  $5.4
billion  (unaudited), total liabilities  of $3.6 billion  (unaudited), and total
capital and surplus of  $1.8 billion (unaudited)  determined in accordance  with
statutory  accounting practices prescribed or  permitted by insurance regulatory
authorities.

    The Association is comprised  of the five insurance  companies set forth  in
the following table, which provides certain unaudited financial information with
respect to each of the five insurance companies comprising the Association.

                        MUNICIPAL BOND INSURANCE ASSOCIATION
      FIVE MEMBER COMPANIES ASSETS AND POLICYHOLDERS' SURPLUS (UNAUDITED)
                             AS OF MARCH 31, 1998.
                                (000'S OMITTED)

<TABLE>
<CAPTION>
                                                                               NEW YORK      NEW YORK       NEW YORK
                                                                              STATUTORY     STATUTORY    POLICYHOLDERS
                                                                                ASSETS     LIABILITIES      SURPLUS
                                                                             ------------  ------------  --------------
<S>                                                                          <C>           <C>           <C>
The Travelers Casualty & Surety Company (formerly The AEtna Casualty &
 Surety Company)...........................................................  $ 12,099,838  $  9,318,112  $   2,781,726
Fireman's Fund Insurance Company...........................................    10,380,078     7,327,508      3,052,570
The Travelers Indemnity Company............................................    11,283,583     8,593,024      2,690,559
CIGNA Property and Casualty Company (formerly Aetna Insurance Company).....     2,325,253     1,440,522        884,731
The Continental Insurance Company..........................................     2,443,794     1,820,590        623,204
                                                                             ------------  ------------  --------------
        Total..............................................................  $ 38,532,546  $ 28,499,756  $  10,032,790
                                                                             ------------  ------------  --------------
                                                                             ------------  ------------  --------------
</TABLE>

    Insurance  companies  are subject  to  extensive regulation  and supervision
where they  do  business  by  state insurance  commissioners  who  regulate  the
standards of solvency which must be maintained, the nature of and limitations on
investments, reports of financial condition, and requirements regarding reserves
for  unearned premiums, losses  and other matters. A  significant portion of the
assets of insurance companies is required by  law to be held in reserve  against
potential claims on policies and is not available to general creditors. Although
the  federal government  does not  regulate the  business of  insurance, federal
initiatives including  pension  regulation,  controls  on  medical  care  costs,
minimum  standards for no-fault automobile insurance, national health insurance,
tax law changes affecting life insurance  companies and repeal of the  antitrust
exemption  for  the insurance  business can  significantly impact  the insurance
business.

    The above ratings are  not recommendations to buy,  sell or hold the  Bonds,
and  such ratings may  be subject to revision  or withdrawal at  any time by the
rating agencies. Any downward revision or  withdrawal of either or both  ratings
may have an adverse effect on the market price of the Bonds. See the Information
Supplement for further information concerning insurance.

    Because the insurance on the Bonds, if any, will be effective so long as the
Bonds  are outstanding, such insurance will be taken into account in determining
the market value  of the  Bonds and therefore  some value  attributable to  such
insurance  will be included in the value of the Units of the Insured Trusts. The
insurance does not, however, guarantee the market  value of the Bonds or of  the
Units.

HOW IS THE PUBLIC OFFERING PRICE DETERMINED?

The  Public Offering Price of the Units of  each Trust is equal to the Trustee's
determination of the aggregate  OFFERING prices of  the Bonds deposited  therein
(minus  any  advancement to  the  principal account  of  the Trust  made  by the
Trustee) plus a sales charge set forth  in "Essential Information" in Part A  of
this  Prospectus, in  each case  adding to  the total  thereof cash  held by the
Trust, if  any,  and  dividing the  sum  so  obtained by  the  number  of  Units
outstanding in the Trust. See "UNIT VALUE AND EVALUATION."

    The  sales charge applicable to quantity purchases is reduced on a graduated
scale for sales to any  purchaser of at least $50,000  or 500 Units and will  be
applied  on whichever basis is more favorable  to the purchaser. For purposes of
calculating the applicable  sales charge,  purchasers who  have indicated  their
intent  to purchase a specified  amount of Units of any  Trust in the primary or
secondary offering period by executing and delivering a letter of intent to  the
Sponsor,  which letter of intent must be in a form acceptable to the Sponsor and
shall have a maximum duration of thirteen months, will be eligible to receive  a
reduced  sales charge according to  the following tables based  on the amount of
intended aggregate  purchases as  expressed  in the  letter  of intent.  Due  to
administrative  limitations and in  order to permit  adequate tracking, the only
secondary market  purchases that  will be  permitted to  be applied  toward  the
intended specified amount and that will

                                       9
<PAGE>
receive the corresponding reduced sales charge are those Units that are acquired
through  or from the Sponsor.  By establishing a letter  of intent, a Unitholder
agrees that the first purchase of  Units following the execution of such  letter
of  intent will  be at least  5% of the  total amount of  the intended aggregate
purchases expressed in such Unitholder's letter of intent. Further, through  the
establishment  of  the  letter  of intent,  such  Unitholder  agrees  that Units
representing 5% of the total  amount of the intended  purchases will be held  in
escrow  by the Trustee pending completion  of these purchases. All distributions
on Units held in escrow will be credited to such Unitholder's account. If  total
purchases prior to the expiration of the letter of intent period equal or exceed
the  amount specified  in a  Unitholder's letter  of intent,  the Units  held in
escrow will  be  transferred to  such  Unitholder's account.  A  Unitholder  who
purchases  Units during the letter  of intent period in  excess of the number of
Units specified in a  Unitholder's letter of intent,  the amount of which  would
cause  the  Unitholder to  be  eligible to  receive  an additional  sales charge
reduction, will  be  allowed  such  additional sales  charge  reduction  on  the
purchase of Units which caused the Unitholder to reach such new breakpoint level
and  on all additional purchases of Units during the letter of intent period. If
the total purchases are less than the amount specified, the Unitholder  involved
must  pay the Sponsor an amount equal to the difference between the amounts paid
for these purchases and  the amounts which  would have been  paid if the  higher
sales  charge had been applied; the Unitholder will, however, be entitled to any
reduced sales charge qualified  for by reaching any  lower breakpoint level.  If
such  Unitholder does not pay the additional amount within 20 days after written
request by  the  Sponsor  or the  Unitholder's  securities  representative,  the
Sponsor  will  instruct  the Trustee  to  redeem  an appropriate  number  of the
escrowed Units to meet the required payment. By establishing a letter of intent,
a Unitholder irrevocably appoints the  Sponsor as attorney to give  instructions
to  redeem any or  all of such  Unitholder's escrowed Units,  with full power of
substitution in the premises. A Unitholder or his securities representative must
notify the Sponsor whenever  such Unitholder makes a  purchase of Units that  he
wishes  to  be counted  towards the  intended amount.  Sales charges  during the
primary offering period are as follows:
<TABLE>
<CAPTION>
                                                                                                              NATIONAL AND
                                                                                                                 STATE
                                          NATIONAL AND STATE LONG TERM                                        INTERMEDIATE
                                                     TRUSTS                   LONG INTERMEDIATE TRUSTS           TRUSTS
                                          -----------------------------     -----------------------------     ------------
                                            PERCENT          PERCENT          PERCENT          PERCENT          PERCENT
                                               OF             OF NET             OF             OF NET             OF
                                            OFFERING          AMOUNT          OFFERING          AMOUNT          OFFERING
            NUMBER OF UNITS*                 PRICE           INVESTED          PRICE           INVESTED          PRICE
- ----------------------------------------  ------------     ------------     ------------     ------------     ------------
<S>                                       <C>              <C>              <C>              <C>              <C>
Less than 500...........................         4.90 %          5.152 %           4.25 %          4.439 %           3.90%
500 but less than 1,000.................         4.75            4.987             4.15            4.330             3.70
1,000 but less than 2,500...............         4.50            4.712             3.85            4.004             3.50
2,500 but less than 5,000...............         4.25            4.439             3.60            3.734             3.25
5,000 but less than 10,000..............         3.50            3.627             3.35            3.466             3.00
10,000 but less than 25,000.............         3.00            3.093             3.00            3.093             2.75
25,000 but less than 50,000.............         2.50            2.564             2.50            2.564             2.50
50,000 or more..........................         2.00            2.041             2.00            2.041             2.00

<CAPTION>

                                            PERCENT
                                             OF NET
                                             AMOUNT
            NUMBER OF UNITS*                INVESTED
- ----------------------------------------  ------------
<S>                                       <C>
Less than 500...........................        4.058 %
500 but less than 1,000.................        3.842
1,000 but less than 2,500...............        3.627
2,500 but less than 5,000...............        3.359
5,000 but less than 10,000..............        3.093
10,000 but less than 25,000.............        2.828
25,000 but less than 50,000.............        2.564
50,000 or more..........................        2.041
</TABLE>

<TABLE>
<CAPTION>
                                            NATIONAL AND STATE SHORT
                                               INTERMEDIATE TRUSTS                SHORT TERM TRUSTS
                                          -----------------------------     -----------------------------
                                            PERCENT          PERCENT          PERCENT          PERCENT
                                               OF             OF NET             OF             OF NET
                                            OFFERING          AMOUNT          OFFERING          AMOUNT
            NUMBER OF UNITS*                 PRICE           INVESTED          PRICE           INVESTED
- ----------------------------------------  ------------     ------------     ------------     ------------
<S>                                       <C>              <C>              <C>              <C>
Less than 500...........................         3.00 %          3.093 %           2.50 %          2.564 %
500 but less than 1,000.................         2.80            2.881             2.30            2.354
1,000 but less than 2,500...............         2.60            2.670             2.10            2.145
2,500 but less than 5,000...............         2.35            2.407             1.85            1.885
5,000 but less than 10,000..............         2.10            2.145             1.60            1.626
10,000 but less than 25,000.............         1.85            1.885             1.35            1.368
25,000 but less than 50,000.............         1.80            1.833             1.25            1.266
50,000 or more..........................         1.50            1.523             1.15            1.163
</TABLE>

*Breakpoint sales charges are computed both on  a dollar basis and on the  basis
 of the number of Units purchased, using the equivalent of 500 Units to $50,000,
 2,500  Units to $250,000 etc., and will be  applied on that basis which is more
 favorable to the purchaser.

    For "secondary market"  sales the  Public Offering  Price per  Unit of  each
Trust is determined by adding to the Trustee's determination of the BID price of
each  Bond in the Trust  a sales charge determined  in accordance with the table
set forth below based upon the number of years remaining to the maturity of each
such Bond. See "UNIT VALUE AND EVALUATION."  The effect of this method of  sales
charge  calculation will be that different sales charge rates will be applied to
the various Bonds in a Trust portfolio based upon the maturities of such  Bonds.
As shown, the sales charge on Bonds in each

                                       10
<PAGE>
maturity  range (and  therefore the aggregate  sales charge on  the purchase) is
reduced with respect to purchases of at least $50,000 or 500 Units:

<TABLE>
<CAPTION>
                                                                       AMOUNT OF PURCHASE*
                              -----------------------------------------------------------------------------------------------------
                                            $50,000      $100,000     $250,000     $500,000    $1,000,000   $2,500,000
                                UNDER          TO           TO           TO           TO           TO           TO       $5,000,000
YEARS TO MATURITY              $50,000      $99,999      $249,999     $499,999     $999,999    $2,499,999   $4,999,999    OR MORE
- ----------------------------------------   ----------   ----------   ----------   ----------   ----------   ----------   ----------
<S>                           <C>          <C>          <C>          <C>          <C>          <C>          <C>          <C>
Less than 1...................         0           0            0            0            0            0            0            0
1 but less than 2.............     1.523 %     1.446 %      1.369 %      1.317 %      1.215 %      1.061 %       .900 %       .750 %
2 but less than 3.............     2.041       1.937        1.833        1.729        1.626        1.420        1.225        1.030
3 but less than 4.............     2.564       2.433        2.302        2.175        2.041        1.781        1.546        1.310
4 but less than 5.............     3.093       2.961        2.828        2.617        2.459        2.175        1.883        1.590
5 but less than 7.............     3.627       3.433        3.239        3.093        2.881        2.460        2.165        1.870
7 but less than 10............     4.167       3.951        3.734        3.520        3.239        2.828        2.489        2.150
10 but less than 13...........     4.712       4.467        4.221        4.004        3.788        3.253        2.842        2.430
13 but less than 16...........     5.263       4.988        4.712        4.439        4.167        3.627        3.169        2.710
16 or more....................     5.820       5.542        5.263        4.987        4.603        4.004        3.500        3.000
</TABLE>

 *Breakpoint sales charges are computed both on a dollar basis and on the  basis
  of  the  number of  Units  purchased, using  the  equivalent of  500  Units to
  $50,000, 2,500 Units  to $250,000,  etc., and will  be applied  on that  basis
  which is more favorable to the purchaser.

        The  secondary market sales charges above  are expressed as a percent of
the net amount invested;  expressed as a percent  of the Public Offering  Price,
the  maximum sales charge  on a Trust,  for instance one  consisting entirely of
Bonds with 16  years or  more to  maturity, would be  5.50% (5.820%  of the  net
amount  invested).  The actual  secondary market  sales  charge included  in the
Public Offering Price of any particular  Trust will depend on the maturities  of
the Bonds in the portfolio of such Trust.

    Pursuant to the terms of the Indenture, the Trustee may terminate a Trust if
the  net asset value of such Trust, as shown by any evaluation, is less than 20%
of the original principal amount of the Trust.

    At all  times while  Units are  being  offered for  sale, the  Sponsor  will
appraise  or cause to  be appraised daily  the value of  the underlying Bonds in
each Trust as of 4:00 p.m. eastern time, or as of any earlier closing time on  a
day  on  which the  New York  Stock  Exchange (the  "Exchange") is  scheduled in
advance to close at such earlier time and will adjust the Public Offering  Price
of  the Units commensurate with such  appraisal. Such Public Offering Price will
be effective for all orders received by a  dealer or the Sponsor at or prior  to
4:00  p.m. eastern time on each such day or  as of any earlier closing time on a
day on which the Exchange is scheduled in advance to close at such earlier time.
Orders received after that time, or on a  day when the Exchange is closed for  a
scheduled  holiday  or weekend,  will be  held until  the next  determination of
price.

    Accrued interest from the preceding Record  Date to, but not including,  the
settlement  date of the transaction (three business days after purchase) will be
added to the Public Offering Price to determine the purchase price of Units. See
"WHAT IS ACCRUED INTEREST?"

    The graduated sales  charges set forth  above will apply  on all  applicable
purchases  of Nuveen investment  company securities on  any one day  by the same
purchaser in the amounts stated, and  for this purpose purchases of this  Series
will be aggregated with concurrent purchases of any other Series or of shares of
any  open-end management  investment company of  which the  Sponsor is principal
underwriter and with respect to the purchase of which a sales charge is imposed.
Purchases by  or for  the account  of individuals  and their  spouses,  parents,
children, grandchildren, grandparents, parents-in-law, sons- and
daughters-in-law,   siblings,  a  sibling's  spouse   and  a  spouse's  siblings
("immediate family  members") will  be aggregated  to determine  the  applicable
sales  charge. The graduated sales  charges are also applicable  to a trustee or
other fiduciary  purchasing  securities for  a  single trust  estate  or  single
fiduciary account. Units may be purchased at the Public Offering Price without a
sales  charge by officers or directors and  by bona fide, full-time employees of
Nuveen, Nuveen Advisory Corp., Nuveen Institutional Advisory Corp. and The  John
Nuveen  Company, including  in each case  these individuals  and their immediate
family members (as defined above).

    Units may be purchased in the primary market with sales charges of 1.70%  of
the  Public Offering Price for National and State Long Term Trusts, 1.35% of the
Public Offering Price for Long Intermediate Trusts, 1.20% of the Public Offering
Price for National and  State Intermediate Trusts, 1.0%  of the Public  Offering
Price  for National and State  Short Intermediate Trusts and  1.0% of the Public
Offering Price for Short Term Trusts by (1) investors who purchase Units through
registered investment  advisers,  certified financial  planners  and  registered
broker-dealers  who  in  each case  either  charge periodic  fees  for financial
planning, investment  advisory or  asset management  services, or  provide  such
services in connection with the establishment of an investment account for which
a  comprehensive  "wrap  fee"  charge is  imposed,  (2)  bank  trust departments
investing funds  over which  they  exercise exclusive  discretionary  investment
authority  and  that  are held  in  a  fiduciary, agency,  custodial  or similar
capacity, (3) any person who for at least 90 days, has been an officer, director
or bona fide employee of any firm offering Units for sale to investors or  their
immediate  family members (as  defined above) and (4)  officers and directors of
bank  holding  companies   that  make  Units   available  directly  or   through
subsidiaries  or bank affiliates (collectively,  the "Discounted Purchases"). In
addition, such  investors may  purchase Units  in the  secondary market  at  the

                                       11
<PAGE>
Public  Offering  Price for  non-breakpoint purchases  minus the  concession the
Sponsor typically allows  to brokers and  dealers for non-breakpoint  purchases.
Notwithstanding  anything  to the  contrary  in this  Prospectus,  investors who
purchase Units as  described in  this paragraph  will not  receive sales  charge
reductions for quantity purchases.

    The  initial or primary Public Offering Price  of the Units in each Trust is
based upon a pro rata share of the OFFERING prices per Unit of the Bonds in such
Trust plus the  applicable sales  charge. The secondary  market Public  Offering
Price of each Trust is based upon a pro rata share of the BID prices per Unit of
the Bonds in such Trust plus the applicable sales charge. The OFFERING prices of
Bonds in a Trust may be expected to average between 1/2% to 2% more than the BID
prices  of such Bonds.  The difference between  the bid side  evaluation and the
offering side evaluation of the Bonds in each Trust on the business day prior to
the Date of Deposit is shown in the discussion of each Trust portfolio.

    Whether or not Units are being offered for sale, the Sponsor will  determine
the aggregate value of each Trust as of 4:00 p.m. eastern time: (i) on each June
30 or December 31 (or, if such date is not a business day, the last business day
prior  thereto), (ii) on any day on which  a Unit is tendered for redemption (or
the next succeeding business day  if the date of  tender is a non-business  day)
and (iii) at such other times as may be necessary. For this purpose, a "business
day"  shall be any day on which the  Exchange is normally open. (See "UNIT VALUE
AND EVALUATION.")

MARKET FOR UNITS

During the  initial public  offering period,  the Sponsor  intends to  offer  to
purchase  Units of each  Trust at a price  equivalent to the  pro rata share per
Unit of the OFFERING prices of the Bonds in such Trust (plus accrued  interest).
Afterward,  although  it is  not  obligated to  do  so, the  Sponsor  intends to
maintain a secondary  market for  Units of  each Trust  at its  own expense  and
continuously  to offer  to purchase  Units of each  Trust at  prices, subject to
change at  any time,  which  are based  upon  the BID  prices  of Bonds  in  the
respective  portfolios of the  Trusts. UNITHOLDERS WHO WISH  TO DISPOSE OF THEIR
UNITS SHOULD INQUIRE OF THE TRUSTEE OR THEIR BROKER AS TO THE CURRENT REDEMPTION
PRICE. (See "HOW UNITS MAY BE REDEEMED WITHOUT CHARGE?") In connection with  its
secondary  marketmaking activities, the Sponsor may from time to time enter into
secondary market  joint  account  agreements with  other  brokers  and  dealers.
Pursuant  to such an agreement, the Sponsor  will purchase Units from the broker
or dealer at the bid price and will place the Units into a joint account managed
by the Sponsor; sales from the account will be made in accordance with the  then
current  prospectus and the Sponsor and the  broker or dealer will share profits
and losses in  the joint account  in accordance  with the terms  of their  joint
account agreement.

    Certificates,  if any, for Units are  delivered to the purchaser as promptly
after the date of settlement (three business days after purchase) as the Trustee
can complete  the mechanics  of  registration, normally  within 48  hours  after
registration instructions are received. Purchasers of Units to whom Certificates
are  issued will be unable  to exercise any right  of redemption until they have
received their Certificates, properly endorsed for transfer. (See "HOW UNITS MAY
BE REDEEMED WITHOUT CHARGE?")

WHAT IS ACCRUED INTEREST?

Accrued interest is the accumulation of unpaid interest on a bond from the  last
day  on which  interest thereon  was paid.  Interest on  Bonds in  each Trust is
accounted for daily on an accrual basis. For this reason, the purchase price  of
Units  of a Trust will  include not only the Public  Offering Price but also the
proportionate share  of accrued  interest  to the  date of  settlement.  Accrued
interest  does not  include accrual  of original  issue discount  on zero coupon
bonds, Stripped Obligations  or other  original issue  discount bonds.  Interest
accrues  to the  benefit of Unitholders  commencing with the  settlement date of
their purchase transaction.

    In an effort to reduce the  amount of accrued interest that investors  would
have  to pay in addition to the Public Offering Price, the Trustee has agreed to
advance to each Trust the amount of accrued interest due on the Bonds as of  the
Date  of Deposit (which has been designated  the first Record Date for all plans
of distribution).  This accrued  interest will  be paid  to the  Sponsor as  the
holder  of record of all Units on  the Date of Deposit. Consequently, the amount
of accrued interest  to be  added to  the Public  Offering Price  of Units  will
include  only accrued interest from  the Date of Deposit  to, but not including,
the date of  settlement of the  investor's purchase (three  business days  after
purchase), less any distributions from the related Interest Account. The Trustee
will  recover its  advancements (without interest  or other cost  to the Trusts)
from interest received on the Bonds deposited in each Trust.

    The Trustee has no  cash for distribution to  Unitholders until it  receives
interest  payments on the Bonds in the  Trusts. Since municipal bond interest is
accrued daily but  paid only  semi-annually, during  the initial  months of  the
Trusts,  the Interest Accounts,  consisting of accrued  but uncollected interest
and collected interest  (cash), will  be predominantly  the uncollected  accrued
interest that is not available for distribution. However, due to advances by the
Trustee,  the Trustee will provide a first distribution between approximately 30
and 60 days after the Date of Deposit. Assuming each Trust retains its  original
size  and composition  and expenses  and fees  remain the  same, annual interest
collected and distributed  will approximate  the estimated  Net Annual  Interest
Income  stated herein. However, the  amount of accrued interest  at any point in
time

                                       12
<PAGE>
will be greater than the amount that the Trustee will have actually received and
distributed to the Unitholders. Therefore, there  will always remain an item  of
accrued interest that is included in the Purchase Price and the redemption price
of the Units.

    Interest  is accounted  for daily and  a proportionate share  of accrued and
undistributed interest computed from the preceding  Record Date is added to  the
daily  valuation of each Unit of each Trust.  (See Part A of this Prospectus and
"WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?") As Bonds mature, or are  redeemed
or  sold,  the  accrued  interest  applicable to  such  bonds  is  collected and
subsequently distributed to Unitholders. Unitholders who sell or redeem all or a
portion of their Units will be  paid their proportionate share of the  remaining
accrued  interest to,  but not including,  the third business  day following the
date of sale or tender.

WHAT ARE ESTIMATED LONG TERM RETURN AND ESTIMATED CURRENT RETURN?

The Estimated Long Term Return for each Trust is a measure of the return to  the
investor  expected  to be  earned  over the  estimated  life of  the  Trust. The
Estimated Long Term Return represents an  average of the yields to maturity  (or
call)  of  the Bonds  in  the Trust's  portfolio  calculated in  accordance with
accepted bond practice and adjusted to reflect expenses and sales charges. Under
accepted bond practice, tax-exempt bonds are customarily offered to investors on
a "yield price" basis, which involves computation of yield to maturity or to  an
earlier  call date  (whichever produces the  lower yield), and  which takes into
account not only the interest payable on the bonds but also the amortization  or
accretion  of  any premium  over,  or discount  from,  the par  (maturity) value
inherent in the bond's purchase price. In the calculation of Estimated Long Term
Return, the average yield for a  Trust's portfolio is derived by weighting  each
Bond's yield by the market value of the Bond and by the amount of time remaining
to  the date to  which the Bond is  priced. This weighted  average yield is then
adjusted to  reflect estimated  expenses, is  compounded, and  is reduced  by  a
factor  which represents the amortization of  the sales charge over the expected
average life of  a Trust. The  Estimated Long Term  Return calculation does  not
take  into account the effect  of a first distribution which  may be less than a
regular distribution or may  be paid at  some point after 30  days (or a  second
distribution  which may be  less than a normal  distribution for Unitholders who
choose quarterly or  semi-annual plans of  distribution), and it  also does  not
take into account the difference in timing of payments to Unitholders who choose
quarterly  or semi-annual plans  of distribution, each of  which will reduce the
return.

    Estimated Current Return  is computed  by dividing the  Net Annual  Interest
Income per Unit by the Public Offering Price. In contrast to Estimated Long Term
Return, Estimated Current Return does not reflect the amortization of premium or
accretion  of discount, if any, on the  Bonds in a Trust's portfolio. Net Annual
Interest Income per Unit is calculated by dividing the annual interest income to
a Trust, less estimated expenses, by the number of Units outstanding.

    Net Annual Interest  Income per  Unit, used to  calculate Estimated  Current
Return,  will vary  with changes  in fees  and expenses  of the  Trustee and the
Evaluator and  with the  redemption,  maturity, exchange  or  sale of  Bonds.  A
Unitholder's  actual return may vary  significantly from the Estimated Long-Term
Return, based  on their  holding  period, market  interest rate  changes,  other
factors  affecting  the  prices  of  individual  bonds  in  the  portfolio,  and
differences between  the expected  remaining  life of  portfolio bonds  and  the
actual  length of time that they remain  in a Trust; such actual holding periods
may be reduced by termination of  a Trust, as described in "OTHER  INFORMATION."
Since  both  the Estimated  Current Return  and the  Estimated Long  Term Return
quoted herein are  based on  the market  value of  the underlying  Bonds on  the
business  day prior  to the  Date of  Deposit, subsequent  calculations of these
performance  measures  will  reflect  the  then  current  market  value  of  the
underlying  Bonds and may be higher or lower. The Sponsor will provide estimated
cash flow  information relating  to a  Trust without  charge to  each  potential
investor  in a Trust who  receives this prospectus and  makes an oral or written
request to the Sponsor for such information.

    A portion of the  monies received by  a Trust may be  treated, in the  first
year  only, as a return of principal due to the inclusion in the Trust portfolio
of "when-issued"  or  other  Bonds  having delivery  dates  after  the  date  of
settlement  for purchases  made on  the Date of  Deposit. A  consequence of this
treatment is that in the computation  of Estimated Current Return for the  first
year, such monies are excluded from Net Annual Interest Income and treated as an
adjustment  to the Public Offering Price. (See "Essential Information" appearing
in Part A  of this  Prospectus, "COMPOSITION  OF TRUSTS"  and "WHAT  IS THE  TAX
STATUS OF UNITHOLDERS?")

    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials compare the then current estimated returns on  a
Trust  and returns  over specified periods  on other similar  Nuveen Trusts with
returns on taxable investments such as corporate or U.S. Government bonds,  bank
CD's  and  money  market accounts  or  money  market funds,  each  of  which has
investment characteristics  that  may  differ  from those  of  the  Trust.  U.S.
Government  bonds, for example, are  backed by the full  faith and credit of the
U.S. Government and bank CD's and money market accounts are insured by an agency
of   the    federal    government.    Money   market    accounts    and    money

                                       13
<PAGE>
market funds provide stability of principal, but pay interest at rates that vary
with the condition of the short-term debt market. The investment characteristics
of the Trusts are described more fully elsewhere in the Prospectus.

HOW WAS THE PRICE OF THE BONDS DETERMINED AT THE DATE OF DEPOSIT?

The prices at which the Bonds deposited in the Trusts would have been offered to
the  public on the business day prior to  the Date of Deposit were determined by
the Trustee on the basis  of an evaluation of such  Bonds prepared by Kenny  S&P
Evaluation  Services, a division of J. J.  Kenny Co., Inc. ("Kenny S&P"), a firm
regularly  engaged  in  the  business  of  evaluating,  quoting  or   appraising
comparable  bonds. With respect to Bonds in  Insured Trusts and insured Bonds in
Traditional Trusts, Kenny S&P evaluated the  Bonds as so insured. (See "WHY  AND
HOW ARE THE BONDS INSURED?")

    The  amount by which  the Trustee's determination of  the OFFERING PRICES of
the Bonds deposited  in the Trusts  was greater or  less than the  cost of  such
Bonds  to  the  Sponsor was  PROFIT  OR LOSS  to  the Sponsor  exclusive  of any
underwriting profit.  (See Part  A of  this Prospectus.)  The Sponsor  also  may
realize  FURTHER PROFIT OR SUSTAIN  FURTHER LOSS as a  result of fluctuations in
the Public Offering  Price of the  Units. Cash,  if any, made  available to  the
Sponsor  prior to the settlement  date for a purchase of  Units, or prior to the
acquisition of all Portfolio securities by a Trust, may be available for use  in
the Sponsor's business, and may be of benefit to the Sponsor.

WHAT IS THE TAX STATUS OF UNITHOLDERS?

At  the respective  times of  issuance of  the Bonds,  opinions relating  to the
validity thereof and  to the exclusion  of interest thereon  from Federal  gross
income  were rendered by bond counsel  to the respective issuing authorities. In
addition, with respect to  State Trusts, where applicable,  bond counsel to  the
issuing  authorities rendered opinions  as to the exemption  of interest on such
Bonds, when held by residents  of the state in which  the issuers of such  Bonds
are  located, from state income taxes and certain state or local intangibles and
local income taxes. For a discussion of the tax status of State Trusts, see Part
A of this Prospectus. Neither  the Sponsor nor Chapman  and Cutler has made  any
review of the Trusts proceedings relating to the issuance of the Bonds or of the
basis  for the opinions rendered  in connection therewith. If  the interest on a
Bond should be determined  to be taxable,  the Bond would  generally have to  be
sold  at a substantial discount. In addition, investors could be required to pay
income tax  on  interest  received  prior  to the  date  of  which  interest  is
determined to be taxable.

    Gain  realized on the sale or redemption of the Bonds by the Trustee or of a
Unit by  a Unitholder  is includable  in  gross income  for Federal  income  tax
purposes,  and may be includable  in gross income for  state tax purposes. (Such
gain does not  include any amounts  received in respect  of accrued interest  or
accrued original issue discount, if any.)

    For purposes of the following opinions, it is assumed that each asset of the
Trusts  is  debt, the  interest  on which  is  excluded for  Federal  income tax
purposes.

    In the opinion of Chapman and Cutler, Counsel to the Sponsor, under existing
law as of the date of this Prospectus:

    (1) the Trusts  are not  associations taxable  as corporations  for  Federal
        income tax purposes, and interest and accrued original issue discount on
        Bonds  which is excludable from gross  income under the Internal Revenue
        Code of 1986, as amended (the "Code") will retain its status for Federal
        income tax purposes when received by the Trusts and when distributed  to
        the  Unitholders; however  such interest  may be  taken into  account in
        computing the alternative minimum tax, an additional tax on branches  of
        foreign  corporations and  the environmental tax  (the "Superfund Tax").
        See "CERTAIN TAX MATTERS APPLICABLE TO CORPORATE UNITHOLDERS", below;

    (2) each Unitholder of a Trust is considered  to be the owner of a pro  rata
        portion  of each asset  of such Trust  under Subpart E,  subchapter J of
        Chapter 1 of  the Code and  will have  a taxable event  when such  Trust
        disposes of a Bond or when the Unitholder redeems or sells Units. If the
        Unitholder  disposes of a Unit, he is deemed thereby to have disposed of
        his entire pro  rata interest in  all the assets  of the Trust  involved
        including his pro rata portion of all the Bonds represented by the Unit.
        The  Taxpayer Relief Act of 1997  includes provisions that treat certain
        transactions  designed  to  reduce  or   eliminate  risk  of  loss   and
        opportunities for gain (e.g., short sales, offsetting notional principal
        contracts,  futures or  forward contracts,  or similar  transactions) as
        constructive sales for purposes  of recognition of  gain (but not  loss)
        and  for purposes of determining  the holding period. Unitholders should
        consult their  own tax  advisors with  regard to  any such  constructive
        sales  rules. Unitholders must  reduce the tax basis  of their Units for
        their share of  accrued interest  received by the  respective Trust,  if
        any,  on Bonds  delivered after the  date the Unitholders  pay for their
        Units to the extent that such interest accrued on such Bonds before  the
        date  the Trust acquired ownership of the  Bonds (and the amount of this
        reduction may exceed the amount of accrued interest paid to the  seller)
        and, consequently, such Unitholders may have an increase in taxable gain
        or reduction in capital loss upon the disposition of such Units. Gain or
        loss  upon the sale or redemption of  Units is measured by comparing the
        proceeds of  such sale  or redemption  with the  adjusted basis  of  the
        Units.  If the  Trustee disposes of  Bonds (whether by  sale, payment at
        maturity, redemption or otherwise),  gain or loss  is recognized to  the
        Unitholder

                                       14
<PAGE>
        (subject  to various non-recognition provisions of the Code). The amount
        of any such gain or loss  is measured by comparing the Unitholder's  pro
        rata  share  of  the  total  proceeds  from  such  disposition  with the
        Unitholder's basis  for his  or  her fractional  interest in  the  asset
        disposed of. In the case of a Unitholder who purchases Units, such basis
        (before  adjustment for  accrued original  issue discount  and amortized
        bond premium, if  any) is  determined by  apportioning the  cost of  the
        Units  among each of the  Trust assets ratably according  to value as of
        the valuation date nearest the date of acquisition of the Units. The tax
        basis reduction requirements  of the  Code relating  to amortization  of
        bond  premium may,  under some  circumstances, result  in the Unitholder
        realizing a taxable gain when his or her Units are sold or redeemed  for
        an  amount less than or equal to their original cost; Unitholders should
        consult their own tax advisors with regard to the calculation of  basis;
        and

    (3) any  amounts paid on defaulted Bonds  held by the Trustee under policies
        of insurance issued with respect to such Bonds which represent  maturing
        interest  on defaulted Bonds held by the Trustee will be excludable from
        Federal gross income if, and to the same extent as, such interest  would
        have  been so excludable if  paid in the normal  course by the issuer of
        the defaulted  Bonds  provided  that,  at the  time  such  policies  are
        purchased,  the amounts paid for such policies are reasonable, customary
        and consistent with the  reasonable expectation that  the issuer of  the
        Bonds, rather than the insurer, will pay debt service on the Bonds.

    Sections 1288 and 1272 of the Internal Revenue Code of 1986, as amended (the
"Code")  provide a complex set of rules  governing the accrual of original issue
discount. These rules provide that original issue discount accrues either on the
basis of a constant compound interest rate or ratably over the term of the Bond,
depending on the date the Bond was  issued. In addition, special rules apply  if
the purchase price of a Bond exceeds the original issue price plus the amount of
original issue discount which would have previously accrued based upon its issue
price  (its "adjusted issue price") to prior  owners. If a Bond is acquired with
accrued interest, that  portion of the  price paid for  the accrued interest  is
added  to the tax basis of the Bond.  When this accrued interest is received, it
is treated as a return of  capital and reduces the tax  basis of the Bond. If  a
Bond  is purchased for a premium, the amount  of the premium is added to the tax
basis of the  Bond. Bond premium  is amortized  over the remaining  term of  the
Bond,  and the tax basis of  the Bond is reduced each  tax year by the amount of
the premium amortized in that tax year. The application of these rules will also
vary depending on the value of the  Bonds on the date a Unitholder acquires  his
Units  and  the price  the  Unitholder pays  for  his Units.  Unitholders should
consult with their tax advisers regarding these rules and their application.

    The "Revenue  Reconciliation Act  of  1993" (the  "1993 Tax  Act")  subjects
tax-exempt  bonds to the market discount rules  of the Code, effective for bonds
purchased after April 30,  1993. In general, market  discount is the amount  (if
any)  by which  the stated  redemption price  at maturity  exceeds an investor's
purchase  price  (except  to  the  extent  that  such  difference,  if  any,  is
attributable to original issue discount not yet accrued), subject to a statutory
DE MINIMIS rule. Market discount can arise based on the price the Trust pays for
the  Bonds or the price a  Unitholder pays for his or  her Units. Under the 1993
Tax Act, accretion of market discount is taxable as ordinary income; under prior
law, the  accretion had  been  treated as  capital  gain. Market  discount  that
accretes  while the Trust holds a Bond would be recognized as ordinary income by
the Unitholders when principal payments are  received on the Bond, upon sale  or
at  redemption (including early  redemption), or upon the  sale or redemption of
his or  her Units,  unless a  Unitholder elects  to include  market discount  in
taxable  income  as  it  accrues.  The market  discount  rules  are  complex and
Unitholders should consult their  tax advisors regarding  these rules and  their
application.

    CERTAIN  TAX MATTERS  APPLICABLE TO  CORPORATE UNITHOLDERS.  In the  case of
certain corporations,  the alternative  minimum tax  and the  Superfund Tax  for
taxable  years beginning after  December 31, 1986  depend upon the corporation's
alternative minimum taxable income ("AMTI"), which is the corporation's  taxable
income  with certain adjustments. One of  the adjustment items used in computing
AMTI of  a  corporation  (other  than an  S  corporation,  Regulated  Investment
Company, Real Estate Investment Trust, REMIC or FASIT) is an amount equal to 75%
of  the excess of such corporation's  "adjusted current earnings" over an amount
equal to  its AMTI  (before such  adjustment item  and the  alternative tax  net
operating  loss deduction). "Adjusted current  earnings" includes all tax-exempt
interest, including  interest on  all Bonds  in the  Trust. Under  current  Code
provisions,  the Superfund Tax does not apply to tax years beginning on or after
January 1, 1996. Legislative proposals have been introduced that would reinstate
the Superfund Tax for taxable years  after December 31, 1997 and before  January
1,  2009. Under the provisions of Section 884  of the Code, a branch profits tax
is levied on the "effectively connected earnings and profits" of certain foreign
corporations which include tax-exempt interest such as interest on the Bonds  in
the  Trust. Unitholders  should consult their  tax advisors with  respect to the
particular tax consequences to them including the corporate alternative  minimum
tax,  the Superfund Tax and the branch profits tax imposed by Section 884 of the
Code.

    Counsel for the Sponsor has also advised that under Section 265 of the Code,
interest on indebtedness incurred or continued  to purchase or carry Units of  a
Trust  is not deductible  for Federal income tax  purposes. The Internal Revenue
Service has  taken the  position that  such indebtedness  need not  be  directly
traceable to the purchase or carrying of Units

                                       15
<PAGE>
(however,  these rules generally  do not apply to  interest paid on indebtedness
incurred to purchase or improve a  personal residence). Also, under Section  265
of  the Code, certain financial institutions  that acquire Units would generally
not be able to deduct any of  the interest expense attributable to ownership  of
such Units. Legislative proposals have been made that would extend the financial
institution  rules to  certain other corporations,  including securities dealers
and other  financial intermediaries.  Investors  with questions  regarding  this
issue should consult with their tax advisers.

    In  the case  of certain  of the Bonds  in the  Trust, the  opinions of bond
counsel indicate that interest on such Bonds received by a "substantial user" of
the facilities  being financed  with the  proceeds of  these Bonds,  or  persons
related thereto, for periods while such Bonds are held by such a user or related
person,  will not be excludable from  Federal gross income, although interest on
such Bonds received  by others would  be excludable from  Federal gross  income.
"Substantial  user" and  "related person"  are defined  under the  Code and U.S.
Treasury Regulations.  Any  person  who  believes  that  he  or  she  may  be  a
"substantial user" or a "related person" as so defined should contact his or her
tax adviser.

    ALL  STATEMENTS IN THE PROSPECTUS CONCERNING EXCLUSION FROM GROSS INCOME FOR
FEDERAL, STATE OR OTHER TAX PURPOSES ARE THE OPINION OF COUNSEL AND ARE TO BE SO
CONSTRUED.

    At the respective times of issuance  of the Bonds, opinions relating to  the
validity  thereof and  to the exclusion  of interest thereon  from Federal gross
income are  rendered by  bond  counsel to  the respective  issuing  authorities.
Neither  the Sponsor nor Chapman and Cutler  has made any special review for the
Fund of the proceedings relating  to the issuance of the  Bonds or of the  basis
for such opinions.

    The Internal Revenue Service Restructuring and Reform Act of 1998 (the "1998
TAX  ACT") provides that for taxpayers other than corporations, net capital gain
(which is defined as net long-term capital gain over net short-term capital loss
for the  taxable  year) realized  from  property (with  certain  exclusions)  is
subject to a maximum marginal stated tax rate of 20% (10% in the case of certain
taxpayers  in the lowest tax bracket). Capital  gain or loss is long-term if the
holding period for the  asset is more  than one year, and  is short-term if  the
holding  period for the asset is  one year or less. The  date on which a Unit is
acquired (i.e., the "trade date") is  excluded for purposes for determining  the
holding period of the Unit. The legislation is generally effective retroactively
for  amounts properly taken  into account on  or after January  1, 1998. Capital
gains realized from assets held for one year or less are taxed at the same rates
as ordinary income.

    In addition,  please  note that  capital  gains may  be  recharacterized  as
ordinary  income  in  the  case  of  certain  financial  transactions  that  are
considered "conversion  transactions" effective  for transactions  entered  into
after  April 30, 1993. Unitholders and prospective investors should consult with
their tax advisers  regarding the potential  effect of this  provision on  their
investment in Units.

    For  purposes of computing  the alternative minimum  tax for individuals and
corporations and the Superfund Tax for corporations, interest on certain private
activity bonds (which includes most industrial and housing revenue bonds) issued
on or after August 8,  1996 is included as an  item of tax preference.  However,
the assets of the Trust do not include any such private activity bonds issued on
or after that date.

    In  general, Section 86  of the Code,  provides that 50%  of Social Security
benefits are includible in gross income to the extent that the sum of  "modified
adjusted gross income" plus 50% of the Social Security benefits received exceeds
a "base amount." The base amount is $25,000 for unmarried taxpayers, $32,000 for
married  taxpayers filing a joint  return and zero for  married taxpayers who do
not live  apart at  all times  during the  taxable year  and who  file  separate
returns.  Modified  adjusted gross  income is  adjusted gross  income determined
without regard to  certain otherwise  allowable deductions  and exclusions  from
gross  income and  by including tax-exempt  interest. To the  extent that Social
Security benefits are includible  in gross income, they  will be treated as  any
other item of gross income.

    In  addition,  under the  1993 Tax  Act, for  taxable years  beginning after
December 31, 1993, up to 85% of Social Security benefits are includible in gross
income to the extent that the sum  of "modified adjusted gross income" plus  50%
of  Social Security  benefits received  exceeds an  "adjusted base  amount." The
adjusted base amount  is $34,000  for unmarried taxpayers,  $44,000 for  married
taxpayers  filing a joint return, and zero for married taxpayers who do not live
apart at all times during the taxable year and who file separate returns.

    Although tax-exempt interest is included  in modified adjusted gross  income
solely  for the purpose of determining what  portion, if any, of Social Security
benefits will be  included in  gross income, no  tax-exempt interest,  including
that received from the Trusts, will be subject to tax. A taxpayer whose adjusted
gross  income already exceeds the  base amount or the  adjusted base amount must
include 50%  or 85%,  respectively, of  his Social  Security benefits  in  gross
income  whether or  not he  receives any  tax-exempt interest.  A taxpayer whose
modified adjusted gross income (after inclusion of tax-exempt interest) does not
exceed the base amount  need not include any  Social Security benefits in  gross
income.

    Ownership  of  the  Units  may  result  in  collateral  federal  income  tax
consequences to certain taxpayers,  including, without limitation,  corporations
subject  to either  the environmental tax  or the branch  profits tax, financial
institutions, certain

                                       16
<PAGE>
insurance companies,  certain S  corporations, individual  recipients of  Social
Security or Railroad Retirement benefits and taxpayers who may be deemed to have
incurred   (or  continued)   indebtedness  to   purchase  or   carry  tax-exempt
obligations. Prospective investors should consult  their tax advisers as to  the
applicability of any such collateral consequences.

    EXCEPT  AS NOTED ABOVE  AND IN PART  A OF THIS  PROSPECTUS, THE EXEMPTION OF
INTEREST ON  STATE  AND  LOCAL  OBLIGATIONS  FOR  FEDERAL  INCOME  TAX  PURPOSES
DISCUSSED  ABOVE DOES  NOT NECESSARILY RESULT  IN EXEMPTION UNDER  THE INCOME OR
OTHER TAX LAWS OF ANY  STATE OR CITY. THE LAWS  OF THE SEVERAL STATES VARY  WITH
RESPECT TO THE TAXATION OF SUCH OBLIGATIONS.

In the opinion of Carter, Ledyard & Milburn, counsel to the Trustee, and, in the
absence  of a New York Trust from the Series, special counsel for the Series for
New York tax matters, under existing law:

        Under the income tax laws of the State and City of New York, each  Trust
    is  not an association taxable as a corporation and the income of each Trust
    will be treated as the income of the Unitholders.

        For a summary of each opinion of special counsel to the respective State
    Trusts for state tax matters, see Part A of this Prospectus.

    WHAT ARE NORMAL TRUST OPERATING EXPENSES?

    No annual advisory fee is charged to the Trusts by the Sponsor. The  Sponsor
    does, however, receive a fee as set forth in "Essential Information" in Part
    A  of this Prospectus for regularly evaluating the Bonds and for maintaining
    surveillance over the portfolio (the "Sponsor's Evaluation Fee").

        The Trustee receives for ordinary  recurring services an annual fee  for
    each  plan  of  distribution  for  each Trust  as  set  forth  in "Essential
    Information" appearing in Part A of this Prospectus. Each annual fee is  per
    $1,000  principal amount of the underlying Bonds in a Trust for that portion
    of the Trust that  represents a particular  plan of distribution,  provided,
    however, that for services performed prior to the record date for the second
    distribution   from   the   Interest  Account   indicated   under  "Interest
    Distributions" in Part A of the Prospectus, the Trustee's compensation shall
    be computed in respect  of all Units outstanding  at the rate specified  for
    the monthly plan of distribution. The Trustee's compensation with respect to
    each Trust is computed on the basis of the largest principal amount of Bonds
    in  the  Trust at  any time  during the  period with  respect to  which such
    compensation is  being  computed.  The Trustee's  fee  may  be  periodically
    adjusted   in  response   to  fluctuations  in   short-term  interest  rates
    (reflecting the cost to the  Trustee of advancing funds  to a Trust to  meet
    scheduled  distributions). In addition, the Sponsor's Evaluation Fee and the
    Trustee's Fee may be adjusted  in accordance with the cumulative  percentage
    increase  of the  United States Department  of Labor's  Consumer Price Index
    entitled "All Services Less Rent of Shelter" since the establishment of  the
    Trusts  or if such index  no longer exists, a  comparable index. The Trustee
    has the use  of funds,  if any,  being held  in the  Interest and  Principal
    Accounts  of each  Trust for future  distributions, payment  of expenses and
    redemptions.  These  Accounts  are  non-interest  bearing  to   Unitholders.
    Pursuant  to normal banking procedures, the Trustee benefits from the use of
    funds held therein. Part of the  Trustee's compensation for its services  to
    the Trusts is expected to result from such use of these funds.

        Premiums for the policies of insurance obtained by the Sponsor or by the
    Bond  issuers  with respect  to the  Bonds  in the  Insured Trusts  and with
    respect to insured Bonds in Traditional Trusts have been paid in full  prior
    to  the deposit of the Bonds in the  Trusts, and the value of such insurance
    has been  included  in  the  evaluation  of the  Bonds  in  each  Trust  and
    accordingly  in the Public Offering Price of  Units of each Trust. There are
    no annual continuing premiums for such insurance.

        The Trusts (and  therefore Unitholders) will  bear all or  a portion  of
    their  offering  costs,  including  costs  of  registering  Units  with  the
    Securities and  Exchange  Commission  and  states and  legal  fees  but  not
    including  the expenses  incurred in the  printing of  preliminary and final
    prospectuses, and  expenses  incurred in  the  preparation and  printing  of
    brochures and other advertising materials and any other selling expenses) as
    is  common for mutual funds. Total offering costs will be amortized over the
    first five years of  such Trusts. The following  are additional expenses  of
    the  Trusts and, when paid by  or are owed to the  Trustee, are secured by a
    lien on  the assets  of  the Trust  or Trusts  to  which such  expenses  are
    allocable:  (1)  the expenses  and  costs of  any  action undertaken  by the
    Trustee  to  protect  the  Trusts  and  the  rights  and  interests  of  the
    Unitholders;  (2) all taxes and other governmental charges upon the Bonds or
    any part of the Trusts  (no such taxes or charges  are being levied or  made
    or,  to the knowledge of the  Sponsor, contemplated); (3) amounts payable to
    the Trustee as fees  for ordinary recurring  services and for  extraordinary
    non-recurring services rendered pursuant to the Indenture, all disbursements
    and  expenses including counsel  fees (including fees  of bond counsel which
    the Trustee may retain) sustained or  incurred by the Trustee in  connection
    therewith; and (4) any losses or liabilities accruing to the Trustee without
    negligence,  bad faith  or willful  misconduct on  its part.  The Trustee is
    empowered to sell  Bonds in  order to  pay these  amounts if  funds are  not
    otherwise available in the applicable Interest and Principal Accounts.

                                       17
<PAGE>
        The  Indenture requires each Trust  to be audited on  an annual basis at
    the expense of the Trust by  independent public accountants selected by  the
    Sponsor.  The Trustee shall not be required, however, to cause such an audit
    to be performed  if its cost  to a Trust  shall exceed $.05  per Unit on  an
    annual  basis. Unitholders of a Trust covered  by an audit may obtain a copy
    of the audited financial statements upon request.

    WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?

    Interest received by the Trustee on the Bonds in each Trust, including  that
    part  of the proceeds  of any disposition of  Bonds which represents accrued
    interest and including any insurance  proceeds representing interest due  on
    defaulted  Bonds, shall be credited to  the "Interest Account" of such Trust
    and all  other moneys  received by  the  Trustee shall  be credited  to  the
    "Principal Account" of such Trust.

        The  pro rata share of cash in  the Principal Account in each Trust will
    be computed as  of each  semi-annual Record  Date and  distributions to  the
    Unitholders  as of  such Record Date  will be  made on or  shortly after the
    fifteenth  day  of  the  month.  Proceeds  received  from  the  disposition,
    including  sale, call or maturity, of any  of the Bonds and all amounts paid
    with respect to zero coupon bonds  and Stripped Obligations will be held  in
    the  Principal  Account  and  either  used  to  pay  for  Units  redeemed or
    distributed on the Distribution Date  following the next semi-annual  Record
    Date.  The Trustee is not required to make a distribution from the Principal
    Account of any Trust  unless the amount available  for distribution in  such
    account equals at least ten cents per Unit.

        The  pro  rata share  of  the Interest  Account  in each  Trust  will be
    computed by the Trustee each month as of each Record Date and  distributions
    will  be  made  on  or shortly  after  the  fifteenth day  of  the  month to
    Unitholders of  such  Trust  as of  the  Record  Date who  are  entitled  to
    distributions  at that time  under the plan  of distribution chosen. Persons
    who purchase  Units between  a  Record Date  and  a Distribution  Date  will
    receive their first distribution on the Distribution Date following the next
    Record Date under the applicable plan of distribution.

        Purchasers  of Units who  desire to receive  interest distributions on a
    monthly or quarterly basis may elect to do so at the time of purchase during
    the initial  public offering  period.  Those indicating  no choice  will  be
    deemed  to have chosen  the semi-annual distribution  plan. All Unitholders,
    however, who purchase Units  during the initial  public offering period  and
    who  hold them  of record on  the first  Record Date will  receive the first
    distribution of interest. Thereafter, Record Dates for monthly distributions
    will  be  the  first  day  of   each  month;  Record  Dates  for   quarterly
    distributions  will be the first day  of February, May, August and November;
    and Record Dates for semi-annual distributions will be the first day of  May
    and November. See Part A of this Prospectus for details of distributions per
    Unit  of each Trust under the various  plans based upon estimated Net Annual
    Interest  Income  at  the  Date  of  Deposit.  The  amount  of  the  regular
    distributions  will generally change when Bonds  are redeemed, mature or are
    sold or when  fees and  expenses increase or  decrease. For  the purpose  of
    minimizing  fluctuations in the distributions from the Interest Account of a
    Trust, the Trustee is authorized to advance such amounts as may be necessary
    to provide for  interest distributions of  approximately equal amounts.  The
    Trustee  shall be reimbursed,  without interest, for  any such advances from
    funds in the Interest  Account of such Trust.  The Trustee's fee takes  into
    account  the costs attributable to the outlay of capital needed to make such
    advances.

        The plan of distribution selected by a Unitholder will remain in  effect
    until  changed. Unitholders  purchasing Units  in the  secondary market will
    initially receive distributions in accordance with the election of the prior
    owner. Unitholders desiring to change their  plan of distribution may do  so
    by  sending  a  written  notice requesting  the  change,  together  with any
    Certificate(s), to the Trustee.  The notice and  any Certificate(s) must  be
    received  by the Trustee  not later than  the semi-annual Record  Date to be
    effective as  of  the  semi-annual  distribution  following  the  subsequent
    semi-annual  Record Date. Unitholders are requested to make any such changes
    within 45 days prior to the applicable Record Date. Certificates should only
    be sent by registered or certified mail to minimize the possibility of their
    being lost or stolen. (See "OWNERSHIP AND TRANSFER OF UNITS.")

        As of the  first day  of each  month the  Trustee will  deduct from  the
    Interest  Account of  a Trust  or, to  the extent  funds are  not sufficient
    therein, from the Principal Account of  a Trust, amounts needed for  payment
    of  expenses of such Trust. The Trustee also may withdraw from said accounts
    such amount, if any, as  it deems necessary to  establish a reserve for  any
    governmental  charges payable out of such  Trust. Amounts so withdrawn shall
    not be considered a part of a Trust's assets until such time as the  Trustee
    shall  return all or any part of such amounts to the appropriate account. In
    addition, the  Trustee shall  withdraw  from the  Interest Account  and  the
    Principal  Account of  a Trust  such amounts  as may  be necessary  to cover
    redemptions of Units of such Trust by the Trustee. Funds which are available
    for future distributions, redemptions  and payment of  expenses are held  in
    accounts which are non-interest bearing to Unitholders and are available for
    use by the Trustee pursuant to normal banking procedures.

                                       18
<PAGE>
    ACCUMULATION PLAN

    The  Sponsor is  also the principal  underwriter of  several open-end mutual
    funds (the  "Accumulation  Funds")  into which  Unitholders  may  choose  to
    reinvest  Trust distributions.  Unitholders may elect  to reinvest principal
    distributions or interest and principal distributions automatically, without
    any sales charge.  Each Accumulation  Fund has  investment objectives  which
    differ  in  certain respects  from those  of  the Trusts  and may  invest in
    securities which would not  be eligible for deposit  in the Trusts.  Further
    information  concerning  the Accumulation  Plan and  a list  of Accumulation
    Funds is set forth in the  Information Supplement of this Prospectus,  which
    may  be obtained by contacting the Trustee at the phone number listed on the
    back cover of this Prospectus.

        Participants may at any  time, by so notifying  the Trustee in  writing,
    elect  to change  the Accumulation Fund  into which  their distributions are
    being reinvested, to change from principal only reinvestment to reinvestment
    of both  principal  and  interest  or vice  versa,  or  to  terminate  their
    participation  in  the  Accumulation  Plan  altogether  and  receive  future
    distributions on  their Units  in cash.  There will  be no  charge or  other
    penalty  for such change of election  or termination. The character of Trust
    distributions for income tax purposes will remain unchanged even if they are
    reinvested in an Accumulation Fund.

    HOW DETAILED ARE REPORTS TO UNITHOLDERS?

    The Trustee shall  furnish Unitholders of  a Trust in  connection with  each
    distribution,  a statement of the amount of interest, if any, and the amount
    of  other  receipts  (received  since  the  preceding  distribution)   being
    distributed,  expressed in each case as a dollar amount representing the pro
    rata share of each Unit of a Trust outstanding and a year to date summary of
    all distributions paid  on said Units.  Within a reasonable  period of  time
    after  the end  of each  calendar year,  the Trustee  shall furnish  to each
    person, who at any time during the calendar year was a registered Unitholder
    of a Trust, a statement  with respect to such Trust  (i) as to the  Interest
    Account: interest received (including amounts representing interest received
    upon  any  disposition  of Bonds),  and,  except  for any  State  Trust, the
    percentage of such interest by states in which the issuers of the Bonds  are
    located, deductions for fees and expenses of such Trust, redemption of Units
    and the balance remaining after such distributions and deductions, expressed
    in  each  case  both  as  a  total dollar  amount  and  as  a  dollar amount
    representing the  pro  rata share  of  each  Unit outstanding  on  the  last
    business  day of such calendar  year; (ii) as to  the Principal Account: the
    dates of disposition of  any Bonds and the  net proceeds received  therefrom
    (excluding  any portion representing accrued  interest), the amount paid for
    purchase of Replacement  Bonds, the  amount paid upon  redemption of  Units,
    deductions  for payment  of applicable  taxes and  fees and  expenses of the
    Trustee, and the balance remaining  after such distributions and  deductions
    expressed  both as a total dollar amount and as a dollar amount representing
    the pro rata share of each Unit outstanding on the last business day of such
    calendar year;  (iii) a  list of  the Bonds  held and  the number  of  Units
    outstanding  on the last business  day of such calendar  year; (iv) the Unit
    Value based  upon the  last computation  thereof made  during such  calendar
    year;  and (v) amounts  actually distributed during  such calendar year from
    the Interest  Account and  from the  Principal Account,  separately  stated,
    expressed  both as total  dollar amounts and  as dollar amounts representing
    the pro rata  share of  each Unit  outstanding. Each  annual statement  will
    reflect  pertinent information  in respect of  all plans  of distribution so
    that Unitholders may  be informed regarding  the results of  other plans  of
    distribution.

    UNIT VALUE AND EVALUATION

    The value of each Trust is determined by the Sponsor on the basis of (1) the
    cash  on hand in the Trust or moneys  in the process of being collected, (2)
    the value of the Bonds in the Trust based on the BID prices of the Bonds and
    (3) interest accrued  thereon not  subject to collection,  LESS (1)  amounts
    representing  taxes or governmental charges payable out of the Trust and (2)
    the accrued expenses of the Trust. The result of such computation is divided
    by the number of Units of such  Trust outstanding as of the date thereof  to
    determine  the per Unit value ("Unit Value")  of such Trust. The Sponsor may
    determine the value of the Bonds in  each Trust (1) on the basis of  current
    BID  prices of  the Bonds obtained  from dealers or  brokers who customarily
    deal in bonds comparable to those held by a Trust, (2) if bid prices are not
    available for any of the  Bonds, on the basis  of bid prices for  comparable
    bonds,  (3) by  causing the value  of the  Bonds to be  determined by others
    engaged in  the practice  of evaluating,  quoting or  appraising  comparable
    bonds  or (4) by  any combination of  the above. Although  the Unit Value of
    each Trust is  based on  the BID  prices of the  Bonds, the  Units are  sold
    initially  to the public at the Public  Offering Price based on the OFFERING
    prices of the Bonds.

        Because the insurance obtained by the Sponsor or by the issuers of Bonds
    with respect to the Bonds in the Insured Trusts and with respect to  insured
    Bonds  in  Traditional  Trusts  is  effective  so  long  as  such  Bonds are
    outstanding, such insurance will  be taken into  account in determining  the
    bid  and offering prices of such Bonds and therefore some value attributable
    to such insurance  will be included  in the  value of Units  of Trusts  that
    include such Bonds.

                                       19
<PAGE>
    HOW UNITS OF THE TRUSTS ARE DISTRIBUTED TO THE PUBLIC

    Nuveen,  in addition to  being the Sponsor,  is the sole  Underwriter of the
    Units. It is the intention of the Sponsor to qualify Units of National, Long
    Intermediate, Intermediate,  Short Intermediate  and Short  Term Trusts  for
    sale  under the laws of substantially all of the states of the United States
    of America, and Units of State Trusts only in the state for which the  Trust
    is named and selected other states.

        Promptly  following the  deposit of Bonds  in exchange for  Units of the
    Trusts, it is  the practice  of the  Sponsor to place  all of  the Units  as
    collateral  for a letter  or letters of  credit from one  or more commercial
    banks under an agreement to release such  Units from time to time as  needed
    for  distribution. Under  such an  arrangement the  Sponsor pays  such banks
    compensation based  on the  then current  interest rate.  This is  a  normal
    warehousing  arrangement during the  period of distribution  of the Units to
    public investors. To facilitate the handling of transactions, sales of Units
    shall be limited to transactions involving a minimum of either $5,000 or  50
    Units, whichever is less. The Sponsor reserves the right to reject, in whole
    or in part, any order for the purchase of Units.

        The  Sponsor  plans  to  allow  a discount  to  brokers  and  dealers in
    connection with  the primary  distribution of  Units and  also in  secondary
    market transactions. The primary market discounts are as follows:

<TABLE>
<CAPTION>
                                                         DISCOUNT PER UNIT
                                --------------------------------------------------------------------
                                 NATIONAL    LONG INTER-                  SHORT INTER-
                                AND STATE      MEDIATE     INTERMEDIATE      MEDIATE     SHORT TERM
NUMBER OF UNITS*                  TRUSTS       TRUSTS         TRUSTS         TRUSTS        TRUSTS
- ------------------------------  ----------  -------------  -------------  -------------  -----------
<S>                             <C>         <C>            <C>            <C>            <C>
Less than 500.................    $3.20         $2.90          $2.70          $2.00         $1.50
500 but less than 1,000.......     3.20         2.90           2.70           2.00          1.50
1,000 but less than 2,500.....     3.20         2.70           2.50           1.80          1.30
2,500 but less than 5,000.....     3.20         2.45           2.25           1.55          1.05
5,000 but less than 10,000....     2.50         2.45           2.25           1.55          1.05
10,000 but less than 25,000...     2.00         2.00           2.00           1.30           .80
25,000 but less than 50,000...     1.75         1.75           1.75           1.30           .60
50,000 or more................     1.75         1.50           1.50           1.00           .60
</TABLE>

    *Breakpoint  sales charges and related  dealer concessions are computed both
     on a dollar basis and on the basis of the number of Units purchased,  using
     the  equivalent of 500 Units  to $50,000, 2,500 Units  to $250,000 etc. and
     will be applied on that basis which is more favorable to the purchaser.

        The Sponsor currently intends to  maintain a secondary market for  Units
    of  each Trust. See "MARKET FOR UNITS."  The amount of the dealer concession
    on secondary market  purchases of Trust  Units through the  Sponsor will  be
    computed based upon the value of the Bonds in the Trust portfolio, including
    the  sales charge computed as described in "HOW IS THE PUBLIC OFFERING PRICE
    DETERMINED?", and  adjusted  to  reflect  the cash  position  of  the  Trust
    principal  account, and will vary with the  size of the purchase as shown in
    the following table:

<TABLE>
<CAPTION>
                                                               AMOUNT OF PURCHASE*
                            -----------------------------------------------------------------------------------------
                                        $50,000   $100,000   $250,000   $500,000   $1,000,000  $2,500,000
                              UNDER       TO         TO         TO         TO          TO          TO      $5,000,000
YEARS TO MATURITY            $50,000    $99,999   $249,999   $499,999   $999,999   $2,499,999  $4,999,999   OR MORE
- --------------------------  ---------  ---------  ---------  ---------  ---------  ----------  ----------  ----------
<S>                         <C>        <C>        <C>        <C>        <C>        <C>         <C>         <C>
Less than 1...............      0          0          0          0          0          0           0           0
1 but less than 2.........    1.00%      .90%       .85%       .80%       .70%        .55%       .467%       .389%
2 but less than 3.........    1.30%      1.20%      1.10%      1.00%      .90%        .73%       .634%       .538%
3 but less than 4.........    1.60%      1.45%      1.35%      1.25%      1.10%       .90%       .781%       .662%
4 but less than 5.........    2.00%      1.85%      1.75%      1.55%      1.40%      1.25%       1.082%      .914%
5 but less than 7.........    2.30%      2.15%      1.95%      1.80%      1.65%      1.50%       1.320%      1.140%
7 but less than 10........    2.60%      2.45%      2.25%      2.10%      1.95%      1.70%       1.496%      1.292%
10 but less than 13.......    3.00%      2.80%      2.60%      2.45%      2.30%      2.00%       1.747%      1.494%
13 but less than 16.......    3.25%      3.15%      3.00%      2.75%      2.50%      2.15%       1.878%      1.606%
16 or more................    3.50%      3.50%      3.40%      3.35%      3.00%      2.50%       2.185%      1.873%
</TABLE>

      *Breakpoint sales charges and related dealer concessions are computed both
       on a dollar  basis and on  the basis  of the number  of Units  purchased,
       using  the equivalent of  500 Units to $50,000,  2,500 Units to $250,000,
       etc., and will be applied  on that basis which  is more favorable to  the
       purchaser.

        The   Sponsor  reserves  the  right   to  change  the  foregoing  dealer
    concessions from time to time.

        At the discretion of the Sponsor,  volume incentives can be earned as  a
    marketing allowance by dealer firms who reach cumulative firm sales or sales
    arrangement  levels of  a specified number  of Units of  an individual Trust
    during the primary  offering period  as set forth  in the  table below.  For
    firms  that meet the  necessary volume level for  a Trust, volume incentives
    may be given on all trades involving  that Trust originated from or by  that
    firm during the primary offering period.

                                       20
<PAGE>
    Primary Market Volume Incentives

<TABLE>
<CAPTION>
                                   PER TRUST SALES LEVEL
AVERAGE MATURITY                     DURING THE PRIMARY      VOLUME INCENTIVE
OF TRUST                              OFFERING PERIOD            PER UNIT
- -------------------------------  --------------------------  -----------------
<S>                              <C>                         <C>
Less than 6 years                      At least 5,000 Units      $    0.05
6 but less than 15 years               At least 2,500 Units      $    0.10
15 years or more                       At least 2,500 Units      $    0.20
</TABLE>

        In addition, a volume incentive of $2.50 per $1,000 of Units sold can be
    earned  by dealer firms as a  marketing allowance for secondary market sales
    of at least $1 million of Nuveen Unit Trust units per calendar quarter.

        Only sales through  the Sponsor  qualify for volume  incentives and  for
    meeting  minimum requirements. The  Sponsor reserves the  right to modify or
    change the volume incentive schedule at any time and make the  determination
    as to which firms qualify for the marketing allowance and the amount paid.

        Registered   investment  advisers,  certified   financial  planners  and
    registered broker-dealers who in each  case either charge periodic fees  for
    financial  planning, investment  advisory or  asset management  services, or
    provide such services in connection with the establishment of an  investment
    account  for which  a comprehensive "wrap  fee" charge is  imposed, and bank
    trust  departments  investing  funds  over  which  they  exercise  exclusive
    discretionary investment authority and that are held in a fiduciary, agency,
    custodial  or  similar  capacity, are  not  entitled to  receive  any dealer
    concession for any sales  made to investors  which qualified as  "Discounted
    Purchases"  during the primary or secondary  market. (See "HOW IS THE PUBLIC
    OFFERING PRICE DETERMINED?")

        Certain commercial banks  are making  Units of the  Trusts available  to
    their  customers on an agency  basis. A portion of  the sales charge paid by
    these customers is retained by or remitted to the banks in the amounts shown
    in the above table. The Glass-Steagall Act prohibits banks from underwriting
    Trust Units; the Act does,  however, permit certain agency transactions  and
    banking   regulators  have  not  indicated   that  these  particular  agency
    transactions are not permitted under the Act. In Texas and in certain  other
    states,  any bank  making Units  available must  be registered  as a broker-
    dealer under state law.

    OWNERSHIP AND TRANSFER OF UNITS

    The ownership  of  Units  is  evidenced  in  Certificated  form  unless  the
    Unitholder  expressly requests that the purchased Units be evidenced by book
    entry positions  recorded on  the  books and  records  of the  Trustee.  The
    Trustee  is authorized to treat as the owner of Units that person who at the
    time is registered as such on the  books of the Trustee. Any Unitholder  who
    holds  a Certificate may change to book entry ownership by submitting to the
    Trustee the  Certificate  along  with  a  written  request  that  the  Units
    represented  by such  Certificate be  held in  book entry  form. Likewise, a
    Unitholder who holds Units in book  entry form may obtain a Certificate  for
    such  Units  by  written  request  to the  Trustee.  Units  may  be  held in
    denominations of one Unit or any multiple or fraction thereof. Fractions  of
    Units  are computed to three decimal places. Any Certificates issued will be
    numbered serially for  identification, and  are issued  in fully  registered
    form,  transferable only on the books of the Trustee. Book entry Unitholders
    will receive a Book Entry Position Confirmation reflecting their ownership.

        For Trusts  allowing optional  plans of  distribution, Certificates  for
    Units  will bear an appropriate notation on their face indicating which plan
    of distribution  has been  selected. When  a change  is made,  the  existing
    Certificates  must be surrendered to the Trustee and new Certificates issued
    to reflect the currently  effective plan of distribution.  There will be  no
    charge  for this service. Holders of book  entry Units can change their plan
    of distribution by making a written request to the Trustee, which will issue
    a new Book Entry Position Confirmation to reflect such change.

        Units are transferable by making a  written request to the Trustee  and,
    in  the  case  of  Units  evidenced  by  Certificate(s),  by  presenting and
    surrendering such Certificate(s) to  the Trustee, at  its address listed  on
    the  back  cover of  this Part  B  of the  Prospectus, properly  endorsed or
    accompanied  by  a  written  instrument  or  instruments  of  transfer.  The
    Certificate(s)   should  be  sent  registered  or  certified  mail  for  the
    protection of  the  Unitholder.  Each  Unitholder  must  sign  such  written
    request, and such Certificate(s) or transfer instrument, exactly as his name
    appears  on (a) the face of the  Certificate(s) representing the Units to be
    transferred, or (b) the Book Entry Position Confirmation(s) relating to  the
    Units to be transferred. Such signature(s) must be guaranteed by a guarantor
    acceptable  to the  Trustee. In  certain instances  the Trustee  may require
    additional documents  such  as,  but  not  limited  to,  trust  instruments,
    certificates   of  death,  appointments  as  executor  or  administrator  or
    certificates  of  corporate  authority.   Mutilated  Certificates  must   be
    surrendered  to the  Trustee in  order for  a replacement  Certificate to be
    issued. Although  at  the  date  hereof  no  charge  is  made  and  none  is
    contemplated,  a Unitholder may be required to  pay $2.00 to the Trustee for
    each Certificate reissued  or transfer  of Units  requested and  to pay  any
    governmental charge which may be imposed in connection therewith.

                                       21
<PAGE>
    REPLACEMENT OF LOST, STOLEN OR DESTROYED CERTIFICATES.

    To  obtain a new  Certificate replacing one  that has been  lost, stolen, or
    destroyed,  the  Unitholder  must   furnish  the  Trustee  with   sufficient
    indemnification  and  pay  such  expenses as  the  Trustee  may  incur. This
    indemnification  must  be  in   the  form  of  an   Open  Penalty  Bond   of
    Indemnification.  The  premium  for such  an  indemnity bond  may  vary, but
    currently amounts to 1% of the market value of the Units represented by  the
    Certificate.  In  the  case  however,  of a  Trust  as  to  which  notice of
    termination has been  given, the premium  currently amounts to  0.5% of  the
    market value of the Units represented by such Certificate.

    HOW UNITS MAY BE REDEEMED WITHOUT CHARGE

    Unitholders  may redeem  all or  a portion  of their  Units by  (1) making a
    written request  for such  redemption (book  entry Unitholders  may use  the
    redemption   form  on  the  reverse  side   of  their  Book  Entry  Position
    Confirmation) to the Trustee at its address listed on the back cover of this
    Part B of the Prospectus (redemptions of 1,000 Units or more will require  a
    signature  guarantee), (2) in the case  of Units evidenced by a Certificate,
    by also  tendering  such  Certificate  to  the  Trustee,  duly  endorsed  or
    accompanied  by proper instruments of transfer with signatures guaranteed as
    explained above, or  provide satisfactory indemnity  required in  connection
    with  lost, stolen or  destroyed Certificates and  (3) payment of applicable
    governmental charges, if any. Certificates should be sent only by registered
    or certified mail to minimize the possibility of their being lost or stolen.
    (See "OWNERSHIP AND TRANSFER OF UNITS.") No redemption fee will be  charged.
    A  Unitholder may authorize the Trustee  to honor telephone instructions for
    the redemption  of Units  held  in book  entry  form. Units  represented  by
    Certificates  may  not  be  redeemed by  telephone.  The  proceeds  of Units
    redeemed by telephone will be sent by check either to the Unitholder at  the
    address  specified on his account or to a financial institution specified by
    the Unitholder for  credit to the  account of the  Unitholder. A  Unitholder
    wishing  to  use  this  method  of  redemption  must  complete  a  Telephone
    Redemption Authorization Form and furnish the Form to the Trustee. Telephone
    Redemption  Authorization  Forms  can   be  obtained  from  a   Unitholder's
    registered representative or by calling the Trustee. Once the completed Form
    is  on file,  the Trustee  will honor  telephone redemption  requests by any
    authorized person.  The  time a  telephone  redemption request  is  received
    determines  the "date of tender" as discussed below. The redemption proceeds
    will be mailed within three business days following the telephone redemption
    request. Only  Units held  in the  name of  individuals may  be redeemed  by
    telephone;  accounts registered in broker  name, or accounts of corporations
    or fiduciaries (including among  others, trustees, guardians, executors  and
    administrators) may not use the telephone redemption privilege.

        On  the third business day following  the date of tender, the Unitholder
    will be entitled to receive in cash  for each Unit tendered an amount  equal
    to  the Unit Value of such Trust determined  by the Trustee, as of 4:00 p.m.
    eastern time,  or as  of any  earlier closing  time on  a day  on which  the
    Exchange  is scheduled in advance to close at such earlier time, on the date
    of tender as defined hereafter, plus accrued interest to, but not including,
    the third business day  after the date of  tender ("Redemption Price").  The
    price  received upon redemption may be more  or less than the amount paid by
    the Unitholder depending on the  value of the Bonds  on the date of  tender.
    Unitholders  should check with the Trustee  or their broker to determine the
    Redemption Price before tendering Units.

        The "date of tender" is deemed to  be the date on which the request  for
    redemption  of Units is received in proper  form by the Trustee, except that
    as regards a redemption request received after 4:00 p.m. eastern time, or as
    of any earlier closing time on a  day on which the Exchange is scheduled  in
    advance  to close at such earlier time, or  on any day on which the Exchange
    is normally  closed, the  date  of tender  is the  next  day on  which  such
    Exchange  is normally open  for trading and  such request will  be deemed to
    have been  made on  such day  and the  redemption will  be effected  at  the
    Redemption Price computed on that day.

        Accrued interest paid on redemption shall be withdrawn from the Interest
    Account of the appropriate Trust or, if the balance therein is insufficient,
    from  the  Principal  Account  of  such Trust.  All  other  amounts  paid on
    redemption shall be  withdrawn from  the Principal Account.  The Trustee  is
    empowered  to  sell underlying  Bonds  of a  Trust  in order  to  make funds
    available for redemption. (See "HOW BONDS MAY BE REMOVED FROM THE  TRUSTS.")
    Units so redeemed shall be cancelled. To the extent that Bonds are sold from
    a  Trust, the size and  diversity of such Trust  will be reduced. Such sales
    may be required at a time when  Bonds would not otherwise be sold and  might
    result in lower prices than might otherwise be realized.

        The Redemption Price is determined on the basis of the BID prices of the
    Bonds  in each Trust, while the initial  Public Offering Price of Units will
    be determined on the basis  of the OFFERING prices of  the Bonds as of  4:00
    p.m.  eastern time  on any day  on which  the Exchange is  normally open for
    trading, or as of any earlier closing time on a day on which the Exchange is
    scheduled in advance to close at  such earlier time, and such  determination
    is  made. As of any given time,  the difference between the bid and offering
    prices of such  Bonds may be  expected to  average 1/2% to  2% of  principal
    amount.  In the  case of  actively traded  Bonds, the  difference may  be as
    little as 1/4 to 1/2 of 1%, and in the case of inactively traded Bonds  such
    difference usually will not exceed 3%.

                                       22
<PAGE>
        The  right of redemption may be  suspended and payment postponed for any
    period during which the Securities  and Exchange Commission determines  that
    trading  in the municipal bond market  is restricted or an emergency exists,
    as a result of which disposal or  evaluation of the Bonds is not  reasonably
    practicable,  or  for  such other  periods  as the  Securities  and Exchange
    Commission may by order permit.

        Under regulations issued  by the Internal  Revenue Service, the  Trustee
    will  be required to withhold a specified percentage of the principal amount
    of a Unit  redemption if the  Trustee has not  been furnished the  redeeming
    Unitholder's  tax  identification  number  in the  manner  required  by such
    regulations. Any amount so withheld  is transmitted to the Internal  Revenue
    Service  and may be recovered by the  Unitholder only when filing his or her
    tax return. Under normal circumstances the Trustee obtains the  Unitholder's
    tax   identification  number  from  the  selling  broker  at  the  time  the
    Certificate or Book Entry Return Confirmation is issued, and this number  is
    printed  on  the  Certificate  or  Book  Entry  Return  Confirmation  and on
    distribution statements. If  a Unitholder's tax  identification number  does
    not  appear as described above, or if it is incorrect, the Unitholder should
    contact the Trustee before redeeming Units to determine what action, if any,
    is required to avoid this "back-up withholding."

    HOW UNITS MAY BE PURCHASED BY THE SPONSOR

    The Trustee will notify the Sponsor  of any tender of Units for  redemption.
    If  the Sponsor's bid in the secondary market at that time equals or exceeds
    the Redemption Price  it may purchase  such Units by  notifying the  Trustee
    before  the close of business  on the second succeeding  business day and by
    making payment therefor to  the Unitholder not later  than the day on  which
    payment  would otherwise have been made by  the Trustee. (See "HOW UNITS MAY
    BE REDEEMED WITHOUT CHARGE.")  The Sponsor's current practice  is to bid  at
    the  Redemption Price in the secondary market. Units held by the Sponsor may
    be tendered to the Trustee for redemption as any other Units.

    HOW BONDS MAY BE REMOVED FROM THE TRUSTS

    Bonds will be removed  from a Trust  as they mature or  are redeemed by  the
    issuers  thereof.  See  "RISK FACTORS"  in  Part  A of  this  Prospectus and
    "SUMMARY OF  PORTFOLIOS"  herein for  a  discussion of  call  provisions  of
    portfolio Bonds.

        The Indenture also empowers the Trustee to sell Bonds for the purpose of
    redeeming  Units tendered by any Unitholder, and for the payment of expenses
    for which income may not be  available. Under the Indenture, the Sponsor  is
    obligated  to provide the Trustee with a current list of Bonds in each Trust
    to be sold in such circumstances. In deciding which Bonds should be sold the
    Sponsor intends to consider, among other things, such factors as: (1) market
    conditions; (2)  market  prices of  the  Bonds;  (3) the  effect  on  income
    distributions to Unitholders of the sale of various Bonds; (4) the effect on
    principal  amount of underlying Bonds per Unit of the sale of various Bonds;
    (5) the financial condition of the issuers;  and (6) the effect of the  sale
    of  various Bonds on the  investment character of the  Trust. Such sales, if
    required, could result in the  sale of Bonds by  the Trustee at prices  less
    than  original cost to the Trust. To the extent Bonds are sold, the size and
    diversity of such Trust will be reduced.

        In addition, the Sponsor is empowered to direct the Trustee to liquidate
    Bonds upon the  happening of certain  other events, such  as default in  the
    payment  of principal  and/or interest,  an action  of the  issuer that will
    adversely affect its  ability to continue  payment of the  principal of  and
    interest  on its Bonds,  or an adverse  change in market,  revenue or credit
    factors affecting the investment character of the Bonds. If a default in the
    payment of the principal of and/or interest on any of the Bonds occurs,  and
    if  the Sponsor fails to instruct the Trustee whether to sell or continue to
    hold such Bonds  within 30  days after notification  by the  Trustee to  the
    Sponsor  of  such default,  the Indenture  provides  that the  Trustee shall
    liquidate said  Bonds forthwith  and shall  not be  liable for  any loss  so
    incurred.  The Sponsor may also  direct the Trustee to  liquidate Bonds in a
    Trust if the Bonds in  the Trust are the  subject of an advanced  refunding,
    generally  considered to be when refunding bonds are issued and the proceeds
    thereof are deposited in irrevocable trust  to retire the refunded Bonds  on
    their redemption date.

        Except  as stated in "COMPOSITION OF TRUSTS" regarding the limited right
    of substitution  of  Replacement Bonds  for  Failed Bonds,  and  except  for
    refunding   securities  that  may  be  exchanged  for  Bonds  under  certain
    conditions specified in the Indenture, the Indenture does not permit  either
    the  Sponsor or the Trustee  to acquire or deposit  bonds either in addition
    to, or in substitution for, any of the Bonds initially deposited in a Trust.

    INFORMATION ABOUT THE TRUSTEE

    The Trustee and its address are stated on  the back cover of this Part B  of
    the Prospectus. The Trustee is subject to supervision and examination by the
    Federal Deposit Insurance Corporation, the Board of Governors of the Federal
    Reserve  System and either the Comptroller  of the Currency or state banking
    authorities.

        The Trustee has assumed no responsibility for the accuracy, adequacy and
    completeness of  the  information not  furnished  by it  contained  in  this
    Prospectus.

                                       23
<PAGE>
    LIMITATIONS ON LIABILITIES OF SPONSOR AND TRUSTEE

    The  Sponsor and the Trustee shall be  under no liability to Unitholders for
    taking any action or for refraining  from any action in good faith  pursuant
    to  the Indenture, or for  errors in judgment, but  shall be liable only for
    their own negligence, lack of good faith or willful misconduct. The  Trustee
    shall  not be liable for depreciation or loss incurred by reason of the sale
    by the Trustee  of any  of the Bonds.  In the  event of the  failure of  the
    Sponsor to act under the Indenture, the Trustee may act thereunder and shall
    not be liable for any action taken by it in good faith under the Indenture.

        The  Trustee shall  not be  liable for  any taxes  or other governmental
    charges imposed upon or in respect of the Bonds or upon the interest thereon
    or upon it as Trustee under the Indenture or upon or in respect of any Trust
    which the Trustee may be required to pay under any present or future law  of
    the  United  States  of America  or  of  any other  taxing  authority having
    jurisdiction. In addition, the Indenture contains other customary provisions
    limiting the liability of the Trustee.

    SUCCESSOR TRUSTEES AND SPONSORS

    The Trustee or any successor trustee  may resign by executing an  instrument
    of  resignation in writing  and filing same  with the Sponsor  and mailing a
    copy of a  notice of  resignation to all  Unitholders then  of record.  Upon
    receiving  such  notice,  the  Sponsor is  required  to  promptly  appoint a
    successor trustee. If the Trustee becomes incapable of acting or is adjudged
    a bankrupt or insolvent,  or a receiver or  other public officer shall  take
    charge  of its property or  affairs, the Sponsor may  remove the Trustee and
    appoint a successor by written instrument.  The resignation or removal of  a
    trustee  and the appointment  of a successor  trustee shall become effective
    only when  the  successor  trustee  accepts its  appointment  as  such.  Any
    successor  trustee shall be  a corporation authorized  to exercise corporate
    trust powers, having capital, surplus and undivided profits of not less than
    $5,000,000. Any corporation into which a trustee may be merged or with which
    it may be  consolidated, or  any corporation  resulting from  any merger  or
    consolidation  to which a trustee  shall be a party,  shall be the successor
    trustee.

        If upon resignation of a trustee no successor has been appointed and has
    accepted the appointment  within 30  days after  notification, the  retiring
    trustee  may apply to a court  of competent jurisdiction for the appointment
    of a successor.

        If the Sponsor fails to undertake any of its duties under the Indenture,
    and no express provision is  made for action by  the Trustee in such  event,
    the  Trustee may, in  addition to its  other powers under  the Indenture (1)
    appoint a successor sponsor or (2) terminate the Indenture and liquidate the
    Trusts.

    INFORMATION ABOUT THE SPONSOR

    Since our founding in 1898, Nuveen has been synonymous with investments that
    withstand the test  of time. Today,  we offer a  broad range of  investments
    designed  for mature  investors whose portfolio  is the  principal source of
    their ongoing  financial  security. More  than  1.3 million  investors  have
    entrusted Nuveen to help them maintain the lifestyle they currently enjoy.

        A  value investing  approach--purchasing securities  of strong companies
    and communities that represent good  long-term value--is the cornerstone  of
    Nuveen's  investment philosophy.  It is  a careful,  long-term strategy that
    offers the potential for attractive returns with moderated risk.  Successful
    value  investing  begins with  in-depth research  and  a discerning  eye for
    marketplace opportunity. Nuveen's team of investment professionals is backed
    by the  discipline,  resources and  expertise  of a  century  of  investment
    experience, including one of the most recognized research departments in the
    industry.

        To  meet the unique circumstances and financial planning needs of mature
    investors, Nuveen offers  a wide  array of taxable  and tax-free  investment
    products--including  equity  and  fixed-income  mutual  funds,  unit trusts,
    exchange-traded  funds,  customized  asset  management  services  and   cash
    management  products.  Nuveen is  a subsidiary  of  The John  Nuveen Company
    which, in turn, is approximately 78%  owned by the St. Paul Companies,  Inc.
    ("ST.  PAUL"). St. Paul is located in St. Paul, Minnesota and is principally
    engaged in  providing  property-liability  insurance  through  subsidiaries.
    Nuveen  is a member of the  National Association of Securities Dealers, Inc.
    and the Securities Industry Association and has its principal office located
    in Chicago (333 West Wacker Drive). Nuveen maintains 8 regional offices.

        To help advisers  and investors better  understand and more  efficiently
    use an investment in the Trusts to reach their investment goals, the Sponsor
    may  advertise  and create  specific  investment programs  and  systems. For
    example, such activities may include presenting information on how to use an
    investment in the  Trusts, alone  or in  combination with  an investment  in
    other  mutual  funds  or  unit investment  trusts  sponsored  by  Nuveen, to
    accumulate assets for future  education needs or  periodic payments such  as
    insurance  premiums. The  Sponsor may  produce software  or additional sales
    literature to promote the advantages of  using the Trusts to meet these  and
    other specific investor needs.

                                       24
<PAGE>
    OTHER INFORMATION
    AMENDMENT OF INDENTURE

    The  Indenture may  be amended  by the Trustee  and the  Sponsor without the
    consent of any of the Unitholders (1) to cure any ambiguity or to correct or
    supplement any provision thereof which may be defective or inconsistent,  or
    (2)  to  make  such  other  provisions as  shall  not  adversely  affect the
    Unitholders, provided, however,  that the  Indenture may not  be amended  to
    increase  the  number of  Units in  any Trust  or to  permit the  deposit or
    acquisition of bonds either  in addition to, or  in substitution for any  of
    the  Bonds initially deposited in any Trust except as stated in "COMPOSITION
    OF TRUSTS" regarding the limited right of substitution of Replacement  Bonds
    and   except  for  the   substitution  of  refunding   bonds  under  certain
    circumstances. The Trustee  shall advise  the Unitholders  of any  amendment
    promptly after execution thereof.

    TERMINATION OF INDENTURE

    Each  Trust may be liquidated at any time  by written consent of 100% of the
    Unitholders or by the Trustee when the value of such Trust, as shown by  any
    evaluation,  is less than 20% of the original principal amount of such Trust
    and will be liquidated by the Trustee  in the event that Units not yet  sold
    aggregating  more than 60% of the  Units originally created are tendered for
    redemption by the Sponsor  thereby reducing the net  worth of such Trust  to
    less  than 40% of the principal amount  of the Bonds originally deposited in
    the portfolio.  (See "Essential  Information" appearing  in Part  A of  this
    Prospectus.)  The sale of Bonds from  the Trusts upon termination may result
    in realization of a lesser amount  than might otherwise be realized if  such
    sale  were not  required at  such time. For  this reason,  among others, the
    amount realized  by a  Unitholder  upon termination  may  be less  than  the
    principal  amount of Bonds originally represented  by the Units held by such
    Unitholder. The Indenture will terminate upon the redemption, sale or  other
    disposition  of the  last Bond  held thereunder,  but in  no event  shall it
    continue beyond  the  end  of  the  calendar  year  preceding  the  fiftieth
    anniversary  of its execution for National  and State Trusts, beyond the end
    of the calendar year  preceding the twentieth  anniversary of its  execution
    for  Long Intermediate,  and Intermediate  Trusts or  beyond the  end of the
    calendar year preceding  the tenth  anniversary of its  execution for  Short
    Intermediate and Short Term Trusts.

        Written  notice of any termination specifying the time or times at which
    Unitholders may surrender their Certificates, if any, for cancellation shall
    be given by the Trustee to each  Unitholder at the address appearing on  the
    registration books of a Trust maintained by the Trustee. Within a reasonable
    time  thereafter, the  Trustee shall liquidate  any Bonds in  the Trust then
    held and  shall deduct  from the  assets  of the  Trust any  accrued  costs,
    expenses  or indemnities  provided by the  Indenture which  are allocable to
    such Trust, including  estimated compensation  of the Trustee  and costs  of
    liquidation  and any amounts required as a reserve to provide for payment of
    any applicable taxes or other  governmental charges. The Trustee shall  then
    distribute  to Unitholders of such Trust their pro rata share of the balance
    of  the  Interest  and  Principal  Accounts.  With  such  distribution,  the
    Unitholders   shall  be   furnished  a  final   distribution  statement,  in
    substantially the same  form as  the annual distribution  statement, of  the
    amount  distributable. At  such time as  the Trustee in  its sole discretion
    shall determine that any amounts held in reserve are no longer necessary, it
    shall make distribution thereof to Unitholders in the same manner.

    LEGAL OPINION

    The legality of the Units offered hereby has been passed upon by Chapman and
    Cutler, 111 West Monroe Street, Chicago, Illinois 60603. Special counsel for
    the Trusts for respective  state tax matters are  named in "Tax Status"  for
    each  Trust  appearing  in Part  A  of  this Prospectus.  Carter,  Ledyard &
    Milburn, 2 Wall Street, New York, New  York 10005, has acted as counsel  for
    the  Trustee with respect to  the Series, and, in the  absence of a New York
    Trust from the Series, as special New York tax counsel for the Series.

    AUDITORS

    The "Statement  of  Condition" and  "Schedule  of Investments"  at  Date  of
    Deposit  included in Part A  of this Prospectus have  been audited by Arthur
    Andersen LLP, independent public accountants,  as indicated in their  report
    in  Part A of this Prospectus, and  are included herein in reliance upon the
    authority of said firm as experts in giving said report.

    SUPPLEMENTAL INFORMATION

    Upon written or telephonic request to the Trustee, investors will receive at
    no cost to the investor supplemental information about this Trust, which has
    been filed with the  Securities and Exchange Commission  and is intended  to
    supplement  information contained in  Part A and Part  B of this Prospectus.
    The supplemental information includes  more detailed information  concerning
    certain  of the  Bonds included  in the  Trusts contained  in the applicable
    Series and more  specific risk information  concerning the individual  state
    Trusts.  This supplement also includes  additional general information about
    the Sponsor and the Trusts.

                                       25
<PAGE>

<TABLE>
<S>                   <C>
J
Defined Portfolios
</TABLE>

           J

                                            Tax-Free Unit Trusts

                              PROSPECTUS -- PART B
                               SEPTEMBER 1, 1998

<TABLE>
<C>                       <S>        <C>
                 SPONSOR             John Nuveen & Co. Incorporated
                                     333 West Wacker Drive
                                     Chicago, IL 60606-1286
                                     Telephone: 312.917.7700

                                     Swiss Bank Tower
                                     10 East 50th Street
                                     New York, NY 10022
                                     212.207.2000

                 TRUSTEE             The Chase Manhattan Bank
                                     4 New York Plaza
                                     New York, NY 10004-2413
                                     800.257.8787

           LEGAL COUNSEL             Chapman and Cutler
              TO SPONSOR             111 West Monroe Street
                                     Chicago, IL 60603
             INDEPENDENT             Arthur Andersen LLP
                  PUBLIC             33 West Monroe Street
             ACCOUNTANTS             Chicago, IL 60603
          FOR THE TRUSTS
</TABLE>

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

    This Prospectus does not contain complete information about the Unit Trust
filed with the Securities and Exchange Commission in Washington, DC under the
Securities Act of 1933 and the Investment Company Act of 1940.

    To obtain copies at proscribed rates--

<TABLE>
<S>        <C>
Write:     Public Reference Section of the Commission, 450 Fifth Street NW, Washington, DC 20549-6009
Call:      (800) SEC-0330
Visit:     http://www.sec.gov
</TABLE>

    No person is authorized to give any information or representation about the
Trusts not contained in Parts A or B of this Prospectus or the Information
Supplement, and you should not rely on any other information.

    When Units of this Fund are no longer available, this Prospectus may be used
as a preliminary Prospectus for a future series, but some of the information in
this Prospectus will be changed for that series.

    UNITS OF ANY FUTURE SERIES MAY NOT BE SOLD NOR MAY OFFERS TO BUY BE ACCEPTED
UNTIL THAT SERIES HAS BECOME EFFECTIVE WITH THE SECURITIES AND EXCHANGE
COMMISSION. NO UNITS CAN BE SOLD WHERE A SALE WOULD BE ILLEGAL.

<PAGE>
                          NUVEEN TAX-FREE UNIT TRUSTS

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

                             INFORMATION SUPPLEMENT


                               NUVEEN SERIES 1093


               This Information Supplement provides additional
           information concerning the structure, operations and risks
           of a Nuveen Tax-Free Unit Trust not found in the
           prospectuses for the Trusts. This Information Supplement
           is not a prospectus and does not include all of the
           information that a prospective investor should consider
           before investing in a Trust. This Information Supplement
           should be read in conjunction with the prospectus for the
           Trust in which an investor is considering investing
           ("Prospectus"). Copies of the Prospectus can be obtained
           by calling or writing the Trustee at the telephone number
           and address indicated in Part B of the Prospectus. This
           Information Supplement has been created to supplement
           information contained in the Prospectus.


               This Information Supplement is dated June 29, 1999.
           Capitalized terms have been defined in the Prospectus.


                               TABLE OF CONTENTS

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

<TABLE>
<S>                                                                    <C>
GENERAL RISK DISCLOSURE..............................................           2
  Health Care Facility Revenue Obligations...........................           2
  Single Family and Multi-Family Housing Revenue Obligations.........           2
  Single Family Mortgage Revenue Bonds...............................           2
  Congregate Care Revenue Obligations................................           3
  Federally Enhanced Obligations.....................................           3
  Public Housing Authority Revenue Obligations.......................           3
  Industrial Revenue Obligations.....................................           3
  Power Revenue Obligations..........................................           4
  Utility Obligations................................................           4
  Transportation Bonds...............................................           4
  Water and/or Sewerage Revenue Obligations..........................           4
  Resource Recovery Revenue Obligations..............................           5
  Education Revenue Obligations......................................           5
  Bridge and Tollroad Revenue Obligations............................           5
  Dedicated-Tax Supported Revenue Bonds..............................           5
  Municipal Lease Revenue Bonds......................................           5
  Special Obligation to Crossover....................................           5
  Civic Organization Obligations.....................................           5
  Original Issue Discount Bonds and Stripped Obligations.............           5
WHY AND HOW ARE THE BONDS INSURED?...................................           6
ACCUMULATION PLAN....................................................           8
INFORMATION ABOUT THE SPONSOR........................................          10
DESCRIPTION OF RATINGS...............................................          11
HOW THE TRUST COMPARES PERFORMANCE...................................          13
HOW TO CALCULATE YOUR ESTIMATED INCOME...............................          14
Appendix A -- Georgia Disclosure.....................................         A-1
Appendix B -- Pennsylvania Disclosure................................         B-1
</TABLE>

<PAGE>
GENERAL RISK DISCLOSURE

    An investment in Units of any Trust should be made with an understanding of
the risks that such an investment may entail. These include the ability of the
issuer, or, if applicable, an insurer, to make payments of interest and
principal when due, the effects of changes in interest rates generally, early
call provisions and the potential for changes in the tax status of the Bonds. As
set forth in the portfolio summaries in Part A of this Prospectus, the Trusts
may contain or be concentrated in one or more of the types of bonds discussed
below. The following paragraphs discuss certain circumstances which may
adversely affect the ability of issuers of Bonds held in the portfolio of a
Trust to make payment of principal and interest thereon or which may adversely
affect the ratings of such Bonds; with respect to Insured Trusts, however,
because of the insurance obtained by the Sponsor or by the issuers of the Bonds,
such changes should not adversely affect an Insured Trust's receipt of principal
and interest, the Standard & Poor's AAA or Moody's Aaa ratings of the Bonds in
the Insured Trust portfolio, or the Standard & Poor's AAA rating of the Units of
each such Insured Trust. For economic risks specific to the individual Trusts,
see "Risk Factors" for each Trust.

    HEALTH CARE FACILITY REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may
be obligations of issuers whose revenues are derived from services provided by
hospitals or other health care facilities, including nursing homes. Ratings of
bonds issued for health care facilities are sometimes based on feasibility
studies that contain projections of occupancy levels, revenues and expenses. A
facility's gross receipts and net income available for debt service may be
affected by future events and conditions including, among other things, demand
for services, the ability of the facility to provide the services required, an
increasing shortage of qualified nurses or a dramatic rise in nursing salaries,
physicians' confidence in the facility, management capabilities, economic
developments in the service area, competition from other similar providers,
efforts by insurers and governmental agencies to limit rates, legislation
establishing state rate-setting agencies, expenses, government regulation, the
cost and possible unavailability of malpractice insurance, and the termination
or restriction of governmental financial assistance, including that associated
with Medicare, Medicaid and other similar third party payor programs. Medicare
reimbursements are currently calculated on a prospective basis and are not based
on a provider's actual costs. Such method of reimbursement may adversely affect
reimbursements to hospitals and other facilities for services provided under the
Medicare program and thereby may have an adverse effect on the ability of such
institutions to satisfy debt service requirements. In the event of a default
upon a bond secured by hospital facilities, the limited alternative uses for
such facilities may result in the recovery upon such collateral not providing
sufficient funds to fully repay the bonds.

    Certain hospital bonds provide for redemption at par upon the damage,
destruction or condemnation of the hospital facilities or in other special
circumstances.

    SINGLE FAMILY AND MULTI-FAMILY HOUSING REVENUE OBLIGATIONS.  Some of the
Bonds in a Trust may be obligations of issuers whose revenues are primarily
derived from mortgage loans to housing projects for the elderly or for low to
moderate income families. Such issues are generally characterized by mandatory
redemption at par or, in the case of original issue discount bonds, accreted
value in the event of economic defaults and in the event of a failure of the
operator of a project to comply with certain covenants as to the operation of
the project. The failure of such operator to comply with certain covenants
related to the tax-exempt status of interest on the Bonds, such as provisions
requiring that a specified percentage of units be rented or available for rental
to low or moderate income families, potentially could cause interest on such
Bonds to be subject to Federal income taxation from the date of issuance of the
Bonds. The ability of such issuers to make debt service payments will be
affected by events and conditions affecting financed projects, including, among
other things, the achievement and maintenance of sufficient occupancy levels and
adequate rental income, employment and income conditions prevailing in local
labor markets, increases in taxes, utility costs and other operating expenses,
the managerial ability of project managers, changes in laws and governmental
regulations, the appropriation of subsidies, and social and economic trends
affecting the localities in which the projects are located. Occupancy of such
housing projects may be adversely affected by high rent levels and income
limitations imposed under Federal and state programs.

    SINGLE FAMILY MORTGAGE REVENUE BONDS.  Some of the Bonds in a Trust may be
single family mortgage revenue bonds, which are issued for the purpose of
acquiring from originating financial institutions notes secured by mortgages on
residences located within the issuer's boundaries and owned by persons of low or
moderate income. Mortgage loans are generally partially or completely prepaid
prior to their final maturities as a result of events such as sale of the
mortgaged premises, default, condemnation or casualty loss. Because these bonds
are subject to extraordinary mandatory redemption in whole or in part from such
prepayments of mortgage loans, a substantial portion of such bonds will probably
be redeemed prior to their scheduled maturities or even prior to their ordinary
call dates. Extraordinary mandatory redemption without premium could also result
from the failure of the originating financial institutions to make mortgage
loans in sufficient amounts within a specified time period. The redemption price
of such issues may be more or less than the offering price of such bonds.
Additionally, unusually high rates of default on the underlying mortgage loans
may reduce revenues available for the payment of principal of or interest on
such mortgage revenue

                                       2
<PAGE>
bonds. Single family mortgage revenue bonds issued after December 31, 1980 were
issued under Section 103A of the Internal Revenue Code of 1954, as amended, or
Section 143 of the Internal Revenue Code of 1986, which Sections contain certain
requirements relating to the use of the proceeds of such bonds in order for the
interest on such bonds to retain its tax-exempt status. In each case, the issuer
of the bonds has covenanted to comply with applicable requirements and bond
counsel to such issuer has issued an opinion that the interest on the bonds is
exempt from Federal income tax under existing laws and regulations. There can be
no assurance that such continuing requirements will be satisfied; the failure to
meet such requirements could cause interest on the Bonds to be subject to
Federal income taxation, possibly from the date of issuance of the Bonds.

    CONGREGATE CARE REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may be
obligations of issuers whose revenues are primarily derived from loans to
finance the construction and/or acquisition of congregate care facilities,
including retirement facilities and nursing care units. A facility's gross
receipts and net income available for debt service may be affected by future
events and conditions, including, among other things, demand for services, the
ability of the facility to provide the services required, management
capabilities, an increasing shortage of qualified nurses or a dramatic rise in
nursing salaries, economic developments in the service area, competition from
other similar providers, efforts by insurers and governmental agencies to limit
rates, legislation establishing state rate-setting agencies, expenses,
government regulation and the termination or restriction of governmental
financial assistance.

    FEDERALLY ENHANCED OBLIGATIONS.  Some of the mortgages which secure the
various health care or housing projects which underlie the previously discussed
Health Care Facility Revenue, Single Family and Multi-Family Housing Revenue,
Single Family Mortgage Revenue Obligations and Congregate Care Revenue Bonds
(the "Obligations") in a Trust may be insured by the Federal Housing
Administration ("FHA"). Under FHA regulations, the maximum insurable mortgage
amount cannot exceed 90% of the FHA's estimated value of the project. The FHA
mortgage insurance does not constitute a guarantee of timely payment of the
principal of and interest on the Obligations. Payment of mortgage insurance
benefits may be (1) less than the principal amount of Obligations outstanding or
(2) delayed if disputes arise as to the amount of the payment or if certain
notices are not given to the FHA within the prescribed time periods. In
addition, some of the previously discussed Obligations may be secured by
mortgage-backed certificates guaranteed by the Government National Mortgage
Association ("GNMA"), a wholly owned corporate instrumentality of the United
States, and/or the Federal National Mortgage Association ("Fannie Mae") a
federally chartered and stockholder-owed corporation. GNMA and Fannie Mae
guarantee timely payment of principal and interest on the mortgage-backed
certificates, even where the underlying mortgage payments are not made. While
such mortgage-backed certificates are often pledged to secure payment of
principal and interest on the Obligations, timely payment of interest and
principal on the Obligations is not insured or guaranteed by the United States,
GNMA, Fannie Mae or any other governmental agency or instrumentality. The GNMA
mortgage-backed certificates constitute a general obligation of the United
States backed by its full faith and credit. The obligations of Fannie Mae,
including its obligations under the Fannie Mae mortgage-backed securities, are
obligations solely of Fannie Mae and are not backed by, or entitled to, the full
faith and credit of the United States.

    PUBLIC HOUSING AUTHORITY REVENUE OBLIGATIONS.  Some of the Bonds in a Trust
may be obligations of issuers whose revenues are primarily derived from loans to
finance public housing projects. These bonds are guaranteed by the federal
Department of Housing and Urban Development. Such issues are generally
characterized by mandatory redemption at par or, in the case of original issue
discount bonds, accreted value in the event of economic defaults. The ability of
such issuers to make debt service payments will be affected by events and
conditions affecting financed projects, including, among other things, the
achievement and maintenance of sufficient occupancy levels, employment and
income conditions prevailing in local labor markets, increases in taxes, utility
costs and other operating expenses, changes in laws and governmental
regulations, and social and economic trends affecting the localities in which
the projects are located. In addition, the federal Department of Housing and
Urban Development may impose regulations and/or limitations which may have an
adverse impact on the Bonds in a Trust.

    INDUSTRIAL REVENUE OBLIGATIONS.  Certain of the Bonds in a Trust may be
industrial revenue bonds ("IRBs"), which are tax-exempt securities issued by
states, municipalities, public authorities or similar entities to finance the
cost of acquiring, constructing or improving various industrial projects. These
projects are usually operated by corporate entities. Issuers are obligated only
to pay amounts due on the IRBs to the extent that funds are available from the
unexpended proceeds of the IRBs or receipts or revenues of the issuer under an
arrangement between the issuer and the corporate operator of a project. The
arrangement may be in the form of a lease, installment sale agreement,
conditional sale agreement or loan agreement, but in each case the payments to
the issuer are designed to be sufficient to meet the payments of amounts due on
the IRBs. Regardless of the structure, payment of IRBs is solely dependent upon
the creditworthiness of the corporate operator of the project and, if
applicable, corporate guarantor. Corporate operators or guarantors may be
affected by many factors which may have an adverse impact on the credit quality
of the particular company or industry. These include cyclicality of revenues and
earnings, regulatory and environmental restrictions, litigation resulting from
accidents or environmentally-caused illnesses, extensive competition and
financial deterioration resulting from a corporate restructuring pursuant to a
leveraged buy-out, takeover or otherwise. Such a restructuring may

                                       3
<PAGE>
result in the operator of a project becoming highly leveraged which may have an
impact on such operator's creditworthiness which in turn would have an adverse
impact on the rating and/or market value of such Bonds. Further, the possibility
of such a restructuring may have an adverse impact on the market for and
consequently the value of such Bonds, even though no actual takeover or other
action is ever contemplated or effected. The IRBs in a Trust may be subject to
special or extraordinary redemption provisions which may provide for redemption
at par or, in the case of original issue discount bonds, accreted value. The
Sponsor cannot predict the causes or likelihood of the redemption of IRBs in a
Trust prior to the stated maturity of such Bonds.

    POWER REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may be obligations
of issuers whose revenues are primarily derived from pollution control bonds as
well as the sale of electric energy and oil and gas. Some of these obligations
are backed by the credit of an investor owned utility (IOU). The problems faced
by such issuers include the difficulty in obtaining approval for timely and
adequate rate increases from the applicable public utility commissions, the
difficulty of financing large construction programs, increased competition,
reductions in estimates of future demand for electricity in certain areas of the
country, the limitations on operations and increased costs and delays
attributable to environmental considerations, the difficulty of the capital
market in absorbing utility debt, the difficulty in obtaining fuel at reasonable
prices and the effect of energy conservation. All of such issuers have been
experiencing certain of these problems in varying degrees. In addition, Federal,
state and municipal governmental authorities may from time to time review
existing, and impose additional, regulations governing the licensing,
construction and operation of nuclear power plants, which may adversely affect
the ability of the issuers of certain of the Bonds in a Trust to make payments
of principal and/or interest on such Bonds.

    UTILITY OBLIGATIONS.  Some of the Bonds in a Trust may be obligations of
issuers whose revenues are primarily derived from the sale of natural gas or the
combined net revenue of two or more municipal utility systems operating as a
single entity. The problems faced by such issuers include the difficulty in
obtaining approval for timely and adequate rate increases from the applicable
public utility commissions, the difficulty of financing large construction
programs, increased competition, reductions in estimates of future demands for
natural gas in certain areas of the country, the limitations on operations and
increased costs and delays attributable to environmental considerations, the
difficulty of the capital market in absorbing utility debt, the difficulty in
obtaining fuel at reasonable prices and the effect of energy conservation. In
addition, Federal, state and municipal governmental authorities may from time to
time review existing, and impose additional, regulations governing the
licensing, construction and operation of nuclear power plants, which may
adversely affect the ability of the issuers of certain of the Bonds in a Trust
to make payments of principal and/or interest on such Bonds.

    TRANSPORTATION BONDS.  Some of the Bonds in a Trust may be obligations of
issuers which are payable from and secured by revenues derived from the
ownership and operation of airports, public transit systems and ports. The major
portion of an airport's gross operating income is generally derived from fees
received from airlines pursuant to use agreements which consist of annual
payments for airport use, occupancy of certain terminal space, service fees and
leases. Airport operating income may therefore be affected by the ability of the
airlines to meet their obligations under the use agreements. The air transport
industry is experiencing significant variations in earnings and traffic, due to
increased competition, excess capacity, increased costs, deregulation, traffic
constraints and other factors, and several airlines are experiencing severe
financial difficulties. In particular, facilities with use agreements involving
airlines experiencing financial difficulty may experience a reduction in revenue
due to the possible inability of these airlines to meet their use agreement
obligations because of such financial difficulties and possible bankruptcy. The
Sponsor cannot predict what effect these industry conditions may have on airport
revenues which are dependent for payment on the financial condition of the
airlines and their usage of the particular airport facility. Bonds that are
secured primarily by the revenue collected by a public transit system typically
are additionally secured by a pledge of sales tax receipts collected at the
state or local level, or of other governmental financial assistance. Transit
system net revenues will be affected by variations in utilization, which in turn
may be affected by the degree of local governmental subsidization, demographic
and population shifts, and competition from other forms of transportation; and
by increased costs, including costs resulting from previous deferrals of
maintenance. Port authorities derive their revenues primarily from fees imposed
on ships using the facilities. The rate of utilization of such facilities may
fluctuate depending on the local economy and on competition from competing forms
of transportation such as air, rail and trucks.

    WATER AND/OR SEWERAGE REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may
be obligations of issuers whose revenues are derived from the sale of water
and/or sewerage services. Such Bonds are generally payable from user fees. The
problems of such issuers include the ability to obtain timely and adequate rate
increases, population decline resulting in decreased user fees, the difficulty
of financing large construction programs, the limitations on operations and
increased costs and delays attributable to environmental considerations, the
increasing difficulty of obtaining or discovering new supplies of fresh water,
the effect of conservation programs and the impact of "no-growth" zoning
ordinances. All of such issuers have been experiencing certain of these problems
in varying degrees.

                                       4
<PAGE>
    RESOURCE RECOVERY REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may be
obligations of issuers whose revenues are derived from the sale of sewerage or
solid waste disposal services. Such bonds are generally payable from user fees.
The problems of such issuers include the ability to obtain timely and adequate
rate increases, population decline resulting in decreased user fees, the
difficulty of financing large construction programs, the limitations on
operations and increased costs and delays attributable to environmental
considerations, the effect of conservation programs and the impact of
"no-growth" zoning ordinances. All of such issuers have been experiencing
certain of these problems in varying degrees.

    EDUCATION REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may be
obligations of issuers which are, or which govern the operation of, colleges and
universities and whose revenues are derived mainly from tuition, dormitory
revenues, grants and endowments. General problems of such issuers include the
prospect of a declining percentage of the population consisting of "college" age
individuals, possible inability to raise tuitions and fees sufficiently to cover
increased operating costs, the uncertainty of continued receipt of Federal
grants and state funding, and government legislation or regulations which may
adversely affect the revenues or costs of such issuers. All of such issuers have
been experiencing certain of these problems in varying degrees.

    BRIDGE AND TOLLROAD REVENUE OBLIGATIONS.  Some of the Bonds in a Trust may
be obligations of issuers which derive their payments from bridge, road or
tunnel toll revenues. The revenues of such an issuer could be adversely affected
by competition from toll-free vehicular bridges and roads and alternative modes
of transportation. Such revenues could also be adversely affected by a reduction
in the availability of fuel to motorists or significant increases in the costs
thereof. Specifically, governmental regulations restricting the use of vehicles
in the New York City metropolitan area may adversely affect revenues of the
Triborough Bridge and Tunnel Authority.

    DEDICATED-TAX SUPPORTED REVENUE BONDS.  Some of the Bonds in a Trust may be
obligations of issuers which are payable from and secured by tax revenues from a
designated source, which revenues are pledged to secure the bonds. The various
types of Bonds described below differ in structure and with respect to the
rights of the bondholders to the underlying property. Each type of dedicated-tax
supported Bond has distinct risks, only some of which are set forth below. One
type of dedicated-tax supported Bond is secured by the incremental tax received
on either real property or on sales within a specifically defined geographical
area; such tax generally will not provide bondholders with a lien on the
underlying property or revenues. Another type of dedicated-tax supported Bond is
secured by a special tax levied on real property within a defined geographical
area in such a manner that the tax is levied on those who benefit from the
project; such bonds typically provide for a statutory lien on the underlying
property for unpaid taxes. A third type of dedicated-tax supported Bond may be
secured by a tax levied upon the manufacture, sale or consumption of commodities
or upon the license to pursue certain occupations or upon corporate privileges
within a taxing jurisdiction. As to any of these types of Bonds, the ability of
the designated revenues to satisfy the interest and principal payments on such
bonds may be affected by changes in the local economy, the financial success of
the enterprise responsible for the payment of the taxes, the value of any
property on which taxes may be assessed and the ability to collect such taxes in
a timely fashion. Each of these factors will have a different affect on each
distinct type of dedicated-tax supported bonds.

    MUNICIPAL LEASE REVENUE BONDS.  Some of the Bonds in a Trust may be
obligations that are secured by lease payments of a governmental entity. Such
payments are normally subject to annual budget appropriations of the leasing
governmental entity. A governmental entity that enters into such a lease
agreement cannot obligate future governments to appropriate for and make lease
payments but covenants to take such action as is necessary to include any lease
payments due in its budgets and to make the appropriations therefor. A
governmental entity's failure to appropriate for and to make payments under its
lease obligation could result in insufficient funds available for payment of the
obligations secured thereby.

    SPECIAL OBLIGATION TO CROSSOVER.  Some of the Bonds in a Trust may be issued
with the intention of crossover refunding an outstanding issue at a future date.
These bonds are secured to the crossover date by U.S. Government securities
purchased with the proceeds of the refunding bonds. The revenues of such an
issuer could be adversely affected by problems associated with the outstanding
issue, economic, social and environmental policies and conditions that are not
within the control of the issuer and governmental policies and regulations
affecting the issuer.

    CIVIC ORGANIZATION OBLIGATIONS.  Some of the Bonds in a Trust may be
obligations of issuers whose revenues are derived from the pledge of civic
organizations, including their assets. The problems faced by such issuers
include the ability to collect pledges made, the unpredictable nature of an
organization's composition and participation, the quality and skill of
management, increased costs and delays attributable to organizations, expenses,
and legislation regarding certain organizational purposes.

    ORIGINAL ISSUE DISCOUNT BONDS AND STRIPPED OBLIGATIONS.  Certain of the
Bonds in a Trust may be original issue discount bonds. These Bonds were issued
with nominal interest rates less than the rates then offered by comparable
securities and as a consequence were originally sold at a discount from their
face, or par, values. This original issue discount, the difference between the
initial purchase price and face value, is deemed under current law to accrue on
a

                                       5
<PAGE>
daily basis and the accrued portion is treated as tax-exempt interest income for
federal income tax purposes. On sale or redemption, gain, if any, realized in
excess of the earned portion of original issue discount will be taxable as
capital gain. See "What is the Tax Status of Unitholders". The current value of
an original issue discount bond reflects the present value of its face amount at
maturity. In a stable interest rate environment, the market value of an original
issue discount bond would tend to increase more slowly in early years and in
greater increments as the bond approached maturity.

    Certain of the original issue discount bonds in a Trust may be zero coupon
bonds. Zero coupon bonds do not provide for the payment of any current interest;
the buyer receives only the right to receive a final payment of the face amount
of the bond at its maturity. The effect of owning a zero coupon bond is that a
fixed yield is earned not only on the original investment but also, in effect,
on all discount earned during the life of the obligation. This implicit
reinvestment of earnings at the same rate eliminates the risk of being unable to
reinvest the income on such obligation at a rate as high as the implicit yield,
but at the same time also eliminates the holder's ability to reinvest at higher
rates in the future. For this reason, zero coupon bonds are subject to
substantially greater price fluctuations during periods of changing market
interest rates than are securities of comparable quality that pay interest
currently.

    Original issue discount bonds, including zero coupon bonds, may be subject
to redemption at prices based on the issue price plus the amount of original
issue discount accreted to redemption (the "accreted value") plus, if
applicable, some premium. Pursuant to such call provisions an original issue
discount bond may be called prior to its maturity date at a price less than its
face value. See the "Schedules of Investments" for more information about the
call provisions of portfolio Bonds.

    Certain of the Bonds in a Trust may be Stripped Obligations, which represent
evidences of ownership with respect to either the principal amount of or a
payment of interest on a tax-exempt obligation. An obligation is "stripped" by
depositing it with a custodian, which then effects a separation in ownership
between the bond and any interest payment which has not yet become payable, and
issues evidences of ownership with respect to such constituent parts. A Stripped
Obligation therefore has economic characteristics similar to zero coupon bonds,
as described above.

    Each Stripped Obligation has been purchased at a discount from the amount
payable at maturity. With respect to each Unitholder, the Internal Revenue Code
treats as "original issue discount" that portion of the discount which produces
a yield to maturity (as of the date of purchase of the Unitholder's Units) equal
to the lower of the coupon rate of interest on the underlying obligation or the
yield to maturity on the basis of the purchase price of the Unitholder's Units
which is allocable to each Stripped Obligation. Original issue discount which
accrues with respect to a Stripped Obligation will be exempt from Federal income
taxation to the same extent as interest on the underlying obligations. (See
"WHAT IS THE TAX STATUS OF UNITHOLDERS?" in Part B of this Prospectus.)

    Unitholders should consult their own tax advisers with respect to the state
and local tax consequences of owning original issue discount bonds or Stripped
Obligations. Under applicable provisions governing determination of state and
local taxes, interest on original issue discount bonds or Stripped Obligations
may be deemed to be received in the year of accrual even though there is no
corresponding cash payment.

WHY AND HOW ARE THE BONDS INSURED?

INSURANCE ON BONDS

INSURED TRUSTS--The Insurer's policy unconditionally and irrevocably guarantees
the full and complete payment required to be made by or on behalf of the Issuer
to the Paying Agent or its successor of an amount equal to (i) the principal of
(either at the stated maturity or by an advancement of maturity pursuant to a
mandatory sinking fund payment) and interest on, the Bonds as such payments
shall become due but shall not be so paid (except that in the event of any
acceleration of the due date of such principal by reason of mandatory or
optional redemption or acceleration resulting from default or otherwise, other
than any advancement of maturity pursuant to a mandatory sinking fund payment,
the payments guaranteed by the Insurer's policy shall be made in such amounts
and at such times as such payments of principal would have been due had there
not been any such acceleration); and (ii) the reimbursement of any such payment
which is subsequently recovered from any owner of the Bonds pursuant to a final
judgment by a court of competent jurisdiction that such payment constitutes an
avoidable preference to such owner within the meaning of any applicable
bankruptcy law (a "Preference").

    The Insurer's policy does not insure against loss of any prepayment premium
which may at any time be payable with respect to any Bond. The Insurer's policy
does not, under any circumstance, insure against loss relating to: (i) optional
or mandatory redemptions (other than mandatory sinking fund redemptions); (ii)
any payments to be made on an accelerated basis; (iii) payments of the purchase
price of Bonds upon tender by an owner thereof; or (iv) any Preference relating
to (i) through (iii) above. The Insurer's policy also does not insure against
nonpayment of principal of or interest on the Bonds resulting from the
insolvency, negligence or any other act or omission of the Paying Agent or any
other paying agent for the Bonds.

                                       6
<PAGE>
    Upon receipt of telephonic or telegraphic notice, such notice subsequently
confirmed in writing by registered or certified mail, or upon receipt of written
notice by registered or certified mail, by the Insurer from the Paying Agent or
any owner of a Bond the payment of an insured amount for which is then due, that
such required payment has not been made, the Insurer on the due date of such
payment or within one business day after receipt of notice of such nonpayment,
whichever is later, will make a deposit of funds, in an account with State
Street Bank and Trust Company, N.A., in New York, New York, or its successor,
sufficient for the payment of any such insured amounts which are then due. Upon
presentment and surrender of such Bonds or presentment of such other proof of
ownership of the Bonds, together with any appropriate instruments of assignment
to evidence the assignment of the insured amounts due on the Bonds as are paid
by the Insurer, and appropriate instruments to effect the appointment of the
Insurer as agent for such owners of the Bonds in any legal proceeding related to
payment of insured amounts on the Bonds, such instruments being in a form
satisfactory to State Street Bank and Trust Company, N.A., State Street Bank and
Trust Company, N.A. shall disperse to such owners or the Paying Agent payment of
the insured amounts due on such Bonds, less any amount held by the Paying Agent
for the payment of such insured amounts and legally available therefor.

    The Insurer is the principal operating subsidiary of MBIA, Inc., a New York
Stock Exchange listed company (the "Company"). The Company is not obligated to
pay the debts of or claims against the Insurer. The Insurer is domiciled in the
State of New York and licensed to do business in and subject to regulation under
the laws of all 50 states, the District of Columbia, the Commonwealth of Puerto
Rico, the Commonwealth of the Northern Mariana Islands, the Virgin Islands of
the United States and the Territory of Guam. The Insurer has two European
branches, one in the Republic of France and the other in the Kingdom of Spain.
New York has laws prescribing minimum capital requirements, limiting classes and
concentrations of investments and requiring the approval of policy rates and
forms. State laws also regulate the amount of both the aggregate and individual
risks that may be insured, the payment of dividends by the Insurer, changes in
control and transactions among affiliates. Additionally, the Insurer is required
to maintain contingency reserves on its liabilities in certain amounts and for
certain periods of time.

    Effective February 17, 1998, the Company acquired all of the outstanding
stock of Capital Markets Assurance Corporation ("CMAC"), a New York domiciled
financial guarantee insurance company, through a merger with its parent, CapMAC
Holdings, Inc. Pursuant to a reinsurance agreement, CMAC has ceded all of its
net insured risks (including any amounts due but unpaid from third party
reinsurers), as well as its unearned premiums and contingency reserves, to the
Insurer. The Company is not obligated to pay the debts of or claims against
CMAC.

    As of December 31, 1998, the Insurer had admitted assets of $6.5 billion
(audited), total liabilities of $4.2 billion (audited), and total capital and
surplus of $2.3 billion (audited) determined in accordance with statutory
accounting practices prescribed or permitted by insurance regulatory
authorities. As of March 31, 1999, the Insurer had admitted assets of $6.7
billion (unaudited), total liabilities of $4.4 billion (unaudited), and total
capital and surplus of $2.3 billion (unaudited) determined in accordance with
statutory accounting practices prescribed or permitted by insurance regulatory
authorities.

    Furthermore, copies of the Insurer's year end financial statements prepared
in accordance with statutory accounting practices are available without charge
from the Insurer. A copy of the Annual Report on Form 10-K of the Company is
available from the Insurer or the Securities and Exchange Commission. The
address of the Insurer is 113 King Street, Armonk, New York 10504. The telephone
number of the Insurer is (914) 273-4545.

YEAR 2000 READINESS DISCLOSURE

    MBIA, Inc. is actively managing a high-priority Year 2000 (Y2K) program. The
company has established an independent Y2K testing lab in its Armonk
headquarters, with a committee of business unit managers overseeing the project.
MBIA has a budget of $1.13 million for its 1998-2000 Y2K efforts. Expenditures
are proceeding as anticipated, and we do not expect the project budget to
materially exceed this amount. MBIA has initiated a comprehensive Y2K plan that
includes assessment, remediation, testing and contingency planning. This plan
covers "mission-critical" internally developed systems, vendor software,
hardware and certain third-party entities through which we conduct our business.
Testing to date indicates that functions critical to the financial guarantee
business, both domestic and international, were Y2K-ready as of December 31,
1998. Additional testing will continue throughout 1999.

    Moody's Investors Service rates the claims paying ability of the Insurer
"Aaa".

    Standard & Poor's Ratings Service, a division of the McGraw Hill Companies,
Inc., rates the claims paying ability of the Insurer "AAA".

    Fitch IBCA, Inc. (formerly known as Fitch Investors Service, L.P.) rates the
financial strength of the Insurer "AAA."

    Each rating of the Insurer should be evaluated independently. The ratings
reflect the respective rating agency's current assessment of the
creditworthiness of the Insurer and its ability to pay claims on its policies of
insurance. Any further explanation as to the significance of the above ratings
may be obtained only from the applicable rating agency.

                                       7
<PAGE>
    The above ratings are not recommendations to buy, sell or hold the Bonds,
and such ratings may be subject to revision or withdrawal at any time by the
rating agencies. Any downward revision or withdrawal of any of the above ratings
may have an adverse effect on the market price of the Bonds. The Insurer does
not guaranty the market price of the Bonds nor does it guaranty that the ratings
on the Bonds will not be revised or withdrawn.

TRADITIONAL TRUSTS--Insurance guaranteeing the timely payment, when due, of all
principal and interest on certain Bonds in a Traditional Trust may have been
obtained by the Sponsor, issuer or underwriter of the particular Bonds involved
or by another party. Such insurance, which provides coverage substantially the
same as that obtained with respect to Bonds in Insured Trusts as described
above, is effective so long as the insured Bond is outstanding and the insurer
remains in business. Insurance relates only to the particular Bond and not to
the Units offered hereby or to their market value. Insured Bonds have received a
rating of "Aaa" by Moody's Investors Service, Inc. and/or "AAA" by Standard &
Poor's Corporation in recognition of such insurance.

    If a Bond in a Traditional Trust is insured, the Schedule of Investments in
Part A of this Prospectus will identify the insurer. Such insurance will be
provided by Financial Guaranty Insurance Company ("FGIC"), AMBAC Assurance
Corporation ("AMBAC"), Bond Investors Guaranty Insurance Company, now known as
MBIA Corp. of Illinois ("BIG"), Capital Guaranty Insurance Company ("CGIC"),
Financial Security Assurance, Inc. ("FSA"), Municipal Bond Insurance Association
(the "Association"), MBIA Insurance Corporation ("MBIA") or Connie Lee Insurance
Company ("ConnieLee"). The Sponsor to date has purchased and presently intends
to purchase insurance for Bonds in Traditional Trusts exclusively from MBIA (see
the preceding disclosure regarding MBIA). There can be no assurance that any
insurer listed therein will be able to satisfy its commitments in the event
claims are made in the future. However, Standard & Poor's Corporation has rated
the claims-paying ability of each insurer "AAA," and Moody's Investors Service
has rated all bonds insured by each such insurer, except ConnieLee, "Aaa."
Moody's Investor's Service gives no ratings for bonds insured by ConnieLee.

    Because any such insurance will be effective so long as the insured Bonds
are outstanding, such insurance will be taken into account in determining the
market value of such Bonds and therefore some value attributable to such
insurance will be included in the value of the Units of the Trust that includes
such Bonds. The insurance does not, however, guarantee the market value of the
Bonds or of the Units.

ACCUMULATION PLAN

    The Sponsor, John Nuveen & Co. Incorporated, is also the principal
underwriter of the Accumulation Funds listed in the following table. Each of
these funds is an open-end, diversified management investment company into which
Unitholders may choose to reinvest Trust distributions automatically, without
any sales charge. Unitholders may reinvest both interest and principal
distributions or principal distributions only. Each Accumulation Fund has
investment objectives which differ in certain respects from those of the Trusts
and may invest in securities which would not be eligible for deposit in the
Trusts. The investment adviser to each Accumulation Fund is a wholly-owned
subsidiary of the Sponsor. Unitholders should contact their financial adviser or
the Sponsor to determine which of the Accumulation Funds they may reinvest into,
as reinvestment in certain of the Accumulation Funds may be restricted to
residents of a particular state or states. Unitholders may obtain a prospectus
for each Accumulation Fund through their financial adviser or through the
Sponsor at (800) 621-7227. For a more detailed description, Unitholders should
read the prospectus of the Accumulation Fund in which they are interested.

    The following is a complete list of the Accumulation Funds currently
available, as of the Date of Deposit of this Prospectus, to Unitholders under
the Accumulation Plan. The list of available Accumulation Funds is subject to
change without the consent of any of the Unitholders.

ACCUMULATION FUNDS

MUTUAL FUNDS

NUVEEN FLAGSHIP MUNICIPAL TRUST

      Nuveen Municipal Bond Fund
      Nuveen Insured Municipal Bond Fund
      Nuveen Flagship All-American Municipal Bond Fund
      Nuveen Flagship Limited Term Municipal Bond Fund
      Nuveen Flagship Intermediate Municipal Bond Fund

NUVEEN FLAGSHIP MULTISTATE TRUST I

      Nuveen Flagship Arizona Municipal Bond Fund
      Nuveen Flagship Colorado Municipal Bond Fund
      Nuveen Flagship Florida Municipal Bond Fund

                                       8
<PAGE>
      Nuveen Flagship Florida Intermediate Municipal Bond Fund
      Nuveen Maryland Municipal Bond Fund
      Nuveen Flagship New Mexico Municipal Bond Fund
      Nuveen Flagship Pennsylvania Municipal Bond Fund
      Nuveen Flagship Virginia Municipal Bond Fund

NUVEEN FLAGSHIP MULTISTATE TRUST II

      Nuveen California Municipal Bond Fund
      Nuveen California Insured Municipal Bond Fund
      Nuveen Flagship Connecticut Municipal Bond Fund
      Nuveen Massachusetts Municipal Bond Fund
      Nuveen Massachusetts Insured Municipal Bond Fund
      Nuveen Flagship New Jersey Municipal Bond Fund
      Nuveen Flagship New Jersey Intermediate Municipal Bond Fund
      Nuveen Flagship New York Municipal Bond Fund
      Nuveen New York Insured Municipal Bond Fund

NUVEEN FLAGSHIP MULTISTATE TRUST III

      Nuveen Flagship Alabama Municipal Bond Fund
      Nuveen Flagship Georgia Municipal Bond Fund
      Nuveen Flagship Louisiana Municipal Bond Fund
      Nuveen Flagship North Carolina Municipal Bond Fund
      Nuveen Flagship South Carolina Municipal Bond Fund
      Nuveen Flagship Tennessee Municipal Bond Fund

NUVEEN FLAGSHIP MULTISTATE TRUST IV

      Nuveen Flagship Kansas Municipal Bond Fund
      Nuveen Flagship Kentucky Municipal Bond Fund
      Nuveen Flagship Kentucky Limited Term Municipal Bond Fund
      Nuveen Flagship Michigan Municipal Bond Fund
      Nuveen Flagship Missouri Municipal Bond Fund
      Nuveen Flagship Ohio Municipal Bond Fund
      Nuveen Flagship Wisconsin Municipal Bond Fund

Flagship Utility Income Fund

Nuveen Investment Trust

Nuveen Growth and Income Stock Fund

Nuveen Balanced Stock and Bond Fund

Nuveen Balanced Municipal and Stock Fund

Nuveen European Value Fund
Nuveen Investment Trust II

      Nuveen Rittenhouse Growth Fund

MONEY MARKET FUNDS

Nuveen California Tax-Free Money Market Fund

Nuveen Massachusetts Tax-Free Money Market Fund

Nuveen New York Tax-Free Money Market Fund

Nuveen Tax-Free Reserves, Inc.

Nuveen Tax-Exempt Money Market Fund, Inc.

    Each person who purchases Units of a Trust may become a participant in the
Accumulation Plan and elect to have his or her distributions on Units of the
Trust invested directly in shares of one of the Accumulation Funds. Reinvesting
Unitholders may select any interest distribution plan. Thereafter, each
distribution of interest income or principal on the participant's Units
(principal only in the case of a Unitholder who has chosen to reinvest only
principal distributions) will, on the applicable distribution date, or the next
day on which the New York Stock Exchange is normally open ("business day") if
the distribution date is not a business day, automatically be received by the
transfer agent for each of the Accumulation Funds, on behalf of such participant
and applied on that date to purchase shares (or fractions thereof) of the
Accumulation Fund chosen at net asset value as computed as of 4:00 p.m. eastern
time on each such date. All

                                       9
<PAGE>
distributions will be reinvested in the Accumulation Fund chosen and no part
thereof will be retained in a separate account. These purchases will be made
without a sales charge.

    The Transfer Agent of the Accumulation Fund will mail to each participant in
the Accumulation Plan a quarterly statement containing a record of all
transactions involving purchases of Accumulation Fund shares (or fractions
thereof) with Trust interest distributions or as a result of reinvestment of
Accumulation Fund dividends. Any distribution of principal used to purchase
shares of an Accumulation Fund will be separately confirmed by the Transfer
Agent. Unitholders will also receive distribution statements from the Trustee
detailing the amounts transferred to their Accumulation Fund accounts.

    Participants may at any time, by so notifying the Trustee in writing, elect
to change the Accumulation Fund into which their distributions are being
reinvested, to change from principal only reinvestment to reinvestment of both
principal and interest or vice versa, or to terminate their participation in the
Accumulation Plan altogether and receive future distributions on their Units in
cash. There will be no charge or other penalty for such change of election or
termination. The character of Trust distributions for income tax purposes will
remain unchanged even if they are reinvested in an Accumulation Fund.

INFORMATION ABOUT THE SPONSOR

    Since our founding in 1898, Nuveen has been synonymous with investments that
withstand the test of time. Today, we offer a broad range of investments
designed for mature investors whose portfolio is the principal source of their
ongoing financial security. More than 1.3 million investors have entrusted
Nuveen to help them maintain the lifestyle they currently enjoy.

    A value investing approach--purchasing securities of strong companies and
communities that represent good long-term value--is the cornerstone of Nuveen's
investment philosophy. It is a careful, long-term strategy that offers the
potential for attractive returns with moderated risk. Successful value investing
begins with in-depth research and a discerning eye for marketplace opportunity.
Nuveen's team of investment professionals is backed by the discipline, resources
and expertise of a century of investment experience, including one of the most
recognized research departments in the industry.

    To meet the unique circumstances and financial planning needs of mature
investors, Nuveen offers a wide array of taxable and tax-free investment
products--including equity and fixed-income mutual funds, unit trusts,
exchange-traded funds, customized asset management services and cash management
products. Nuveen is a subsidiary of The John Nuveen Company which, in turn, is
approximately 78% owned by the St. Paul Companies, Inc. ("ST. PAUL"). St. Paul
is located in St. Paul, Minnesota and is principally engaged in providing
property-liability insurance through subsidiaries. Nuveen is a member of the
National Association of Securities Dealers, Inc. and the Securities Industry
Association and has its principal office located in Chicago (333 West Wacker
Drive). Nuveen maintains 8 regional offices.

    To help advisers and investors better understand and more efficiently use an
investment in the Trusts to reach their investment goals, the Sponsor may
advertise and create specific investment programs and systems. For example, such
activities may include presenting information on how to use an investment in the
Trusts, alone or in combination with an investment in other mutual funds or unit
investment trusts sponsored by Nuveen, to accumulate assets for future education
needs or periodic payments such as insurance premiums. The Sponsor may produce
software or additional sales literature to promote the advantages of using the
Trusts to meet these and other specific investor needs.

                                       10
<PAGE>
DESCRIPTION OF RATINGS*

    STANDARD & POOR'S CORPORATION.  A description of the applicable Standard &
Poor's Corporation rating symbols and their meanings follows:

    A Standard & Poor's rating is a current assessment of the creditworthiness
of an obligor with respect to a specific debt obligation. This assessment may
take into consideration obligors such as guarantors, insurers or lessees.

    The rating is not a recommendation to purchase, sell or hold a security,
inasmuch as it does not comment as to market price or suitability for a
particular investor.

    The ratings are based on current information furnished by the issuer or
obtained by Standard & Poor's from other sources it considers reliable. Standard
& Poor's does not perform an audit in connection with any rating and may, on
occasion, rely on unaudited financial information. The ratings may be changed,
suspended or withdrawn as a result of changes in, or unavailability of, such
information, or for other circumstances.

    The ratings are based, in varying degrees, on the following considerations:

     I.  Likelihood of default--capacity and willingness of the obligor as to
         the timely payment of interest and repayment of principal in accordance
         with the terms of the obligation;

     II.  Nature of and provisions of the obligation;

    III.  Protection afforded by, and relative position of, the obligation in
          the event of bankruptcy, reorganization or other arrangements under
          the laws of bankruptcy and other laws affecting creditors' rights.

    AAA--This is the highest rating assigned by Standard & Poor's to a debt
obligation. Capacity to pay interest and repay principal is extremely strong.

    AA--Bonds rated AA have a very strong capacity to pay interest and repay
principal, and differ from the highest rated issues only in small degree.

    A--Bonds rated A have a strong capacity to pay interest and repay principal,
although they are somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than bonds in higher rated categories.

    BBB--Bonds rated BBB are regarded as having an adequate capacity to pay
interest and repay principal. Whereas they normally exhibit adequate protection
parameters, adverse economic conditions or changing circumstances are more
likely to lead to a weakened capacity to pay interest and repay principal for
bonds in this category than for bonds in the higher rated categories.

    PLUS (+) OR MINUS (-): The ratings from "AA" to "BB" may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.

    PROVISIONAL RATINGS: The letter "p" indicates that the rating is
provisional. A provisional rating assumes the successful completion of the
project being financed by the issuance of the bonds being rated and indicates
that payment of debt service requirements is largely or entirely dependent upon
the successful and timely completion of the project. This rating, however, while
addressing credit quality subsequent to completion of the project, makes no
comment on the likelihood of, or the risk of default upon failure of, such
completion. Accordingly, the investor should exercise his own judgment with
respect to such likelihood and risk.

    NOTE RATINGS: A Standard & Poor's note rating reflects the liquidity
concerns and market access risks unique to notes. Notes due in 3 years or less
will likely receive a note rating. Notes maturing beyond 3 years will most
likely receive a long-term debt rating.

    Note rating symbols are as follows:

        SP-1  Very strong or strong capacity to pay principal and interest.
              Those issues determined to possess overwhelming safety
              characteristics will be given a plus (+) designation.

        SP-2  Satisfactory capacity to pay principal and interest.

    MOODY'S INVESTORS SERVICE, INC.  A brief description of the applicable
Moody's Investors Service, Inc. rating symbols and their meanings follows:

    Aaa--Bonds which are rated Aaa are judged to be the best quality. They carry
the smallest degree of investment risk and are generally referred to as "gilt
edge." Interest payments are protected by a large or by an exceptionally stable
margin and principal is secure. While the various protective elements are likely
to change, such changes as can be visualized are most unlikely to impair the
fundamentally strong position of such issues. Their safety is so absolute that,

- ---------
*As published by the rating companies.

                                       11
<PAGE>
with the occasional exception of oversupply in a few specific instances,
characteristically, their market value is affected solely by money market
fluctuations.

    Aa--Bonds which are rated Aa are judged to be of high quality by all
standards. Together with the Aaa group they comprise what are generally known as
high grade bonds. They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuations of
protective elements may be of greater amplitude or there may be other elements
present which make the long-term risks appear somewhat larger than in Aaa
securities. Their market value is virtually immune to all but money market
influences, with the occasional exception of oversupply in a few specific
instances.

    A--Bonds which are rated A possess many favorable investment attributes and
are to be considered as upper medium grade obligations. Factors giving security
to principal and interest are considered adequate, but elements may be present
which suggest a susceptibility to impairment sometime in the future. The market
value of A-rated bonds may be influenced to some degree by economic performance
during a sustained period of depressed business conditions, but, during periods
of normalcy, A-rated bonds frequently move in parallel with Aaa and Aa
obligations, with the occasional exception of oversupply in a few specific
instances.

    Moody's bond rating symbols may contain numerical modifiers of a generic
rating classification. The modifier 1 indicates that the bond ranks at the high
end of its category; the modifier 2 indicates a mid-range ranking; and the
modifier 3 indicates that the issue ranks in the lower end of its generic rating
category.

    Baa--Bonds which are rated Baa are considered as medium grade obligations,
i.e., they are neither highly protected nor poorly secured. Interest payments
and principal security appear adequate for the present but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time. Such bonds lack outstanding investment characteristics and in
fact have speculative characteristics as well. The market value of Baa-rated
bonds is more sensitive to changes in economic circumstances, and aside from
occasional speculative factors applying to some bonds of this class, Baa market
valuations move in parallel with Aaa, Aa and A obligations during periods of
economic normalcy, except in instances of oversupply.

    Con. (--)--Bonds for which the security depends upon the completion of some
act or the fulfillment of some condition are rated conditionally. These are
bonds secured by (a) earnings of projects under construction, (b) earnings of
projects unseasoned in operation experience, (c) rentals which begin when
facilities are completed, or (d) payments to which some other limiting condition
attaches. Parenthetical rating denotes probable credit stature upon completion
of construction or elimination of basis of condition.

NOTE RATINGS:

    MIG 1  This designation denotes best quality. There is present strong
           protection by established cash flows, superior liquidity support or
           demonstrated broad-based access to the market for refinancing.

    MIG 2  This designation denotes high quality. Margins of protection are
           ample although not so large as in the preceding group.

    FITCH IBCA, INC. (formerly Fitch Investors Service, L.P.) A brief
description of the applicable Fitch IBCA, Inc. rating symbols and their meanings
follow:

    AAA--Bonds considered to be investment grade and of the highest credit
quality. The obligor has an exceptionally strong ability to pay interest and
repay principal, which is unlikely to be affected by reasonably foreseeable
events.

    AA--Bonds considered to be investment grade and of very high credit quality.
The obligor's ability to pay interest and repay principal is very strong,
although not quite as strong as bonds rated AAA. Bonds rated in the AAA and AA
categories are not significantly vulnerable to foreseeable future developments.

    A--Bonds considered to be investment grade and of high credit quality. The
obligor's ability to pay interest and repay principal is considered to be
strong, but may be more vulnerable to adverse changes in economic conditions and
circumstances than bonds with higher ratings.

    BBB--Bonds considered to be investment grade and of satisfactory credit
quality. The obligor's ability to pay interest and repay principal is considered
to be adequate. Adverse changes in economic conditions and circumstances,
however, are more likely to have adverse impact on these bonds, and therefore
impair timely payment. The likelihood that the ratings of these bonds will fall
below investment grade is higher than for bonds with higher ratings.

    To provide more detailed indications of credit quality, the AA, A and BBB
ratings may be modified by the addition of a plus or minus sign to show relative
standing within these major rating categories.

NOTE RATINGS:

    FIN-1  Notes assigned this rating are regarded as having the strongest
           degree of assurance for timely payment.

                                       12
<PAGE>
    FIN-2  Notes assigned this rating reflect a degree of assurance for timely
           payment only slightly less in degree than the highest category.

HOW THE TRUST COMPARES PERFORMANCE

    The Sponsor may compare the estimated returns of the Trust with the returns
or yields of other tax-free and taxable investments, often on a taxable
equivalent basis. In addition, the Sponsor from time to time may quote various
performance measures and studies in order to compare the historical returns
available from an investment in municipal securities with investments in both
tax-free and taxable securities.

    Nuveen Research prepared one such study which compared the after-tax value
of $100,000 initially invested in 1977 in various asset classes including
municipal bonds, treasury bonds and corporate bonds. As indicated in the chart
provided below, the 20-year study shows that municipal bonds significantly
outperformed corporate and treasury bonds once the effects of taxes were
factored in. In fact, over the 20-year period, municipal bond returns in dollars
were almost double those of treasury bonds.

                 AFTER-TAX VALUE OF $100,000 INVESTED IN 1977*


    The graph appearing on this page of the Information Supplement compares
after-tax total returns of $100,000 initially in 1977 in each of the Lehman
Brothers MuniBond Index, Long-Term Treasury Index and Long-Term Corporate Index.
As indicated in the graph, such an investment in the Lehman Brothers MuniBond
Index, Long-Term Treasury Index and Long-Term Corporate Index would have
appreciated to $511,039, $274,434, and $298,682, respectively at the end of
1996. The graph assumes all proceeds of investment are reinvested at the
respective index rates at the time of reinvestment and also assumes that 20% of
the assets in each category are turned over annually and proceeds are reinvested
in the respective indexes. The tax rates assumed to generate the after-tax total
returns were based upon the income and capital gain rates applicable each year
from 1977-1996 for an investor who earned the inflation-adjusted equivalents of
$500,000 in 1996. In addition, treasury returns were "grossed up" an assumed 5%
to take into account the Treasuries' exemption from state income tax. The graph
is for illustrative purposes only, and does not represent the return or
performance of any Nuveen Tax-Free Unit Trust and is not intended to predict
future results.


    * The graph compares after-tax total returns using the Lehman Brothers
MuniBond Index, Long-Term Treasury Index and Long-Term Corporate Index. The
graph assumes all proceeds of investment are reinvested at the respective index
rates at the time of reinvestment and also assumes that 20% of the assets in
each category are turned over annually and proceeds are reinvested in the
respective indexes. The tax rates assumed to generate the after-tax total
returns were based upon the income and capital gain rates applicable each year
from 1977-1996 for an investor who earned the inflation-adjusted equivalents of
$100,000 in 1996. In addition, treasury returns were "grossed up" an assumed 5%
to take into account the Treasuries' exemption from state income tax. The graph
is for illustrative purposes only, and does not represent the return or
performance of any Nuveen Tax-Free Unit Trust and is not intended to predict
future results.

    A comparison of the estimated returns of the Trust and the historic
performance of municipal bonds to the returns and performance of other
investments is one element to consider in making an informed investment
decision. Taxable investments have investment characteristics that differ from
those of the Trust. U.S. Government bonds are long-term investments backed by
the full faith and credit of the U.S. Government and are subject to federal
income tax but are exempt from state income taxes. Bank CDs are generally
short-term FDIC insured investments, which pay fixed principal and interest but
are subject to fluctuating rollover rates. Both bank CDs and corporate bonds are
generally subject to both federal and state income taxes. Money market funds are
short term investments with stable net asset values, fluctuating yields and
special features that enhance liquidity.

                                       13
<PAGE>
HOW TO CALCULATE YOUR ESTIMATED INCOME

    The examples provided below illustrate how to calculate the estimated annual
income generated by a hypothetical $10,000 investment in each respective Trust.
The illustrations assume that the investment was made on the day prior to the
date of deposit by an investor electing the monthly distribution plan and that
the portfolio contains all the securities described in the portfolio. These
hypothetical examples are for illustrative purposes only and not intended to
reflect or predict the results of any actual investment and do not contemplate
changes to the portfolio or expenses.

<TABLE>
<CAPTION>
                              EXAMPLE OF HOW TO CALCULATE YOUR ESTIMATED INCOME:

    GEORGIA INSURED TRUST 65
<S>                           <C>        <C>                           <C>        <C>

    $10,000                    DIVIDED BY $99.42                       =          100.583
    Investment                           Offering price and                       # of units purchased
    (as of 06/28/99)                     accrued interest

<CAPTION>
<S>                           <C>        <C>                           <C>        <C>

    100.583                   X          $4.7837                       =          $481.16
    # of units purchased                 Annual income per unit                   annual income
                                         (monthly plan)
</TABLE>


<TABLE>
<CAPTION>
                              EXAMPLE OF HOW TO CALCULATE YOUR ESTIMATED INCOME:

    PENNSYLVANIA INSURED TRUST 252
<S>                           <C>        <C>                           <C>        <C>

    $10,000                    DIVIDED BY $99.55                       =          100.452
    Investment                           Offering price and                       # of units purchased
    (as of 06/28/99)                     accrued interest

<CAPTION>
<S>                           <C>        <C>                           <C>        <C>

    100.452                   X          $4.8250                       =          $484.68
    # of units purchased                 Annual income per unit                   annual income
                                         (monthly plan)
</TABLE>


                                       14
<PAGE>
                                   APPENDIX A

                               GEORGIA DISCLOSURE

ECONOMIC FACTORS--GEORGIA

    The following brief summary regarding the economy of Georgia is based upon
information drawn from publicly available sources and is included for purposes
of providing information about general economic conditions that may or may not
affect issuers of the Georgia obligations. The Sponsor has not independently
verified any of the information contained in such publicly available documents.

    ECONOMIC OUTLOOK.  Georgia's recovery from the economic recession of the
early 1990's has been steady and is better than regional trends. The nation's
economy expanded by 3.4% in 1997, while Georgia's economy increased by 3.6%,
slightly above the predicted gain of 3.3% but below its 4.4% growth in 1996.

    The 1998 forecast anticipates that Georgia's real Gross State Product
(inflation adjusted) will increase by 3.1%, significantly less than in 1997, but
higher than the expected rate of growth in the national Gross Domestic Product
(2.3%). While this recovery does not meet the explosive patterns set in past
cycles, recent data reveal that Georgia ranks among the top six states in the
nation in employment and total population growth.

    The State's inflation-adjusted personal income is expected to expand by
3.5%, compared with the 1997 increase of 4.1%. Higher employment will be the
most important factor in 1998 income gains, but a tight labor market will ensure
that wage and salary increases also will contribute substantially to income
growth. This reverses the pattern of the first five years of the current
expansion, when wages and salaries lagged behind increases in the number of
jobs, causing personal income to rise less rapidly than expected. Georgia's
above-average gain in personal income, at a rate even higher than the State's
above-average rate of population growth, will help lessen the diminishing gap
between the State's per capita personal income and that of the nation.

    Total employment in Georgia rose by 4.2% in 1996, double the U.S. gain,
mainly due to activity related to Olympic preparations. Employment dipped
slightly in the six months after the Olympic games but has continued its upward
trend through the beginning of 1998. In 1997, the State's nonagricultural
employment expanded by 1.9%, compared with the 3.7% gain in 1996. In contrast,
the national rate of employment growth in 1996 and 1997 were 2% and 2.2%
respectively. During 1997, the State's total employment averaged 3.620 million,
up from 3.537 million in 1996. Preliminary figures for March 1998 indicate that
employment reached 3.704 million and growth is expected to reflect a 2.1% gain,
or 76,300 new jobs for the year.

    Although prospects are best for services, the 1998 outlook for the other
sectors of the Georgia economy varies. Growth in the transportation,
communications and public utilities sector will come from cyclical gains, the
stimulative effects of deregulation and the opening of new markets by
technological advances. Wholesale and retail trade will see above-average
growth, and finance, insurance and real estate will expand moderately. Slow
growth is forecast for manufacturing and government, and activity in
construction and mining will decline moderately.

    The 1996 and 1997 annual average unemployment rates (not seasonally
adjusted) for Georgia were 4.6% and 4.5%, respectively, as compared to the
national unemployment rates of 5.4% and 4.7%, respectively. Georgia's
unemployment rate has decreased every year since 1992 and has averaged 4.0%
during the first three months of 1998.

    Because labor markets will remain stable, wages are not expected to climb
faster in Georgia than in the nation as a whole. Georgia's per capita personal
income (adjusted for price changes) climbed by 4.5% to $24,061 in 1997, compared
to the 5.0% increase in 1996. Among the states, Georgia currently ranks
twenty-fifth in the nation in per capita personal income and third among the
twelve states of the Southeast region. The national average increase in per
capita personal income was 4.8% during 1997, up from 4.6% in 1996.

    The State's annual rate of population growth is dipping slightly--from 2.1%
in 1996, to 2% in 1997, to 1.9% in 1998. Georgia's total population, however,
will continue to grow faster than any state outside of the Rocky Mountain
region, at almost twice the national rate of about 1% annually. The State's
population has risen by 15.6% since 1990, more than twice the rate of the nation
as a whole. The Census Bureau estimates that in July 1997 Georgia's population
reached 7.49 million and will exceed 7.7 million by the end of 1998, a gain of
144,000 over the previous year.

    REVENUES AND EXPENDITURES.  Excluding net proceeds from the Georgia Lottery
and revenues from the Indigent Care Trust Fund, net collections received by the
Georgia Department of Revenue grew by 5.5% in Fiscal Year 1997, slightly lower
than the predicted rate of 6.1%. Revenue collections are projected to increase
by 5.1% in Fiscal 1998. This rate of growth reflects cyclical gains, an expected
loss from the gradual elimination of the State's sales tax on food, and an
expected boost from changes in the federal capital gains tax. Total revenue
collections in Fiscal 1999 are expected to rise by 4.8%.

                                      A-1
<PAGE>
    Receipts in Fiscal Year 1997 (ended June 30, 1997) reached $10.521 billion,
an increase of $580.8 million or 5.8% over Fiscal 1996. The top revenue producer
was the personal income tax, at $4.741 billion or 45.1% of total revenue. This
tax source increased 11.7% over Fiscal 1996. The sales and use tax was the
second largest source, at $4.079 billion or 38.8% of total receipts. Sales and
use tax collections were up 2.6% in Fiscal 1997. These two taxes, income and
sales, have accounted for roughly 85% of total revenues since 1989. Corporate
income tax accounted for 7.1% of total collections or $750.0 million, up 1.2%
over Fiscal Year 1996 receipts. The next two largest revenue producers were
motor fuel taxes at 3.7% or $389.7 million (down 1.9% from Fiscal 1996) and
motor vehicle taxes at 1.9% or $202.1 million (down 2.9%).

    Two ongoing legislative measures were of significance for Fiscal Year 1997.
First, Georgia's four cent sales tax on eligible food and beverage was reduced
by half beginning October 1, 1996 and was reduced by an additional one cent on
October 1, 1997. The final one cent will be eliminated on October 1, 1998 (House
Bill 265). Second, in 1995, the Georgia Department of Revenue issued the first
of four, equal yearly refund checks to eligible federal and military retirees
pursuant to House Bill 90. House Bill 3 required the Department of Revenue, in
October 1996, to issue refunds to a second category of eligible retirees.

    Expenditures and appropriations for State funds for Fiscal Year 1997 totaled
$11.793 billion, a 7.4% increase over Fiscal 1996 appropriations. Of these
appropriations, 55.8% was used for education, 10.4% for human resources, and
11.2% for Medicaid funding. The State's funds surplus reached $216.4 million at
the end of Fiscal 1997; combined with the lottery surplus and other additional
revenues, Georgia's total surplus for Fiscal 1997 was $493.9 million.

    Though March 1998, the Georgia Department of Revenue has collected $8.124
billion, up $456.0 million over the same period in Fiscal 1997. The largest
increases occurred in the estate tax and the individual income tax, up 17.2% and
9.2%, respectively. The motor vehicle tax, however, is down 11.1% for this
period compared to the previous year. Estimated total revenue for Fiscal Year
1998 $11.778 billion, and appropriations totaling $11.772 billion are
recommended by the Governor for expenditure, a 0.2% decrease from Fiscal 1997
expenditures.

    CONSTITUTIONAL CONSIDERATIONS.  The Georgia Constitution permits the
issuance by the State of general obligation debt and of certain guaranteed
revenue debt. The State may incur guaranteed revenue debt by guaranteeing the
payment of certain revenue obligations issued by an instrumentality of the
State. The Georgia Constitution prohibits the incurring of any general
obligation debt or guaranteed revenue debt if the highest aggregate annual debt
service requirement for the then current year or any subsequent fiscal year for
outstanding general obligation debt and guaranteed revenue debt, including the
proposed debt, exceed 10% of the total revenue receipts, less refunds, of the
State treasury in the fiscal year immediately preceding the year in which any
such debt is to be incurred.

    The Georgia Constitution also permits the State to incur public debt to
supply a temporary deficit in the State treasury in any fiscal year created by a
delay in collecting the taxes of that year. Such debt must not exceed, in the
aggregate, 5% of the total revenue receipts, less refunds, of the State treasury
in the fiscal year immediately preceding the year in which such debt is
incurred. The debt incurred must be repaid on or before the last day of the
fiscal year in which it is to be incurred out of the taxes levied for that
fiscal year. No such debt may be incurred in any fiscal year if there is then
outstanding unpaid debt from any previous fiscal year which was incurred to
supply a temporary deficit in the State treasury. No such short-term debt has
been incurred under this provision since the inception of the constitutional
authority referred to in this paragraph.

    Virtually all of the issues of long-term debt obligations issued by or on
behalf of the State of Georgia and counties, municipalities and other political
subdivisions and public authorities thereof are required by law to be validated
and confirmed in a judicial proceeding prior to issuance. The legal effect of an
approved validation in Georgia is to render incontestable the validity of the
pertinent bond issue and the security therefor.

    As of October 31, 1996, Georgia had authorized total aggregate general
obligation debt of $7,995,920,000. In the amended fiscal year 1996 and 1997
appropriations, $495,450,000 in general obligation debt was authorized. For
fiscal year 1998, the Governor recommended $508,800,000 in bonds, the proceeds
of which are to be used for various planned capital projects of the State, its
department and agencies. Total direct obligations issued for fiscal years ended
June 30, 1975 through June 30, 1997 is $8,189,495,000. Georgia has no direct
obligations authorized but unissued during that period.

    Georgia's total outstanding debt as of October 31, 1996 is $4,727,630,000.
Georgia's aggregate fiscal year debt service on all outstanding bonds as of
October 31, 1996 is approximately $7.15 billion.

    BOND RATINGS.  Currently, Moody's Investors Service, Inc. rates State of
Georgia general obligation bonds Aaa; Standard & Poor's Ratings Services rates
such bonds AAA (upgraded from AA+ on July 29, 1997); and Fitch IBCA, Inc.
(formerly known as Fitch Investors Service, L.P.) rates such bonds as AAA.

    LEGAL PROCEEDINGS.  Georgia is involved in certain legal proceedings that,
if decided against the State, may require the State to make significant future
expenditures or may substantially impair revenues. An adverse final decision
could materially affect the State's governmental operations and, consequently,
its ability to pay debt service on its obligations.

                                      A-2
<PAGE>
GEORGIA TAXABLE ESTIMATED CURRENT RETURN TABLE

    The following tables show the approximate taxable estimated current returns
for individuals that are equivalent to tax-exempt estimated current returns
under combined Federal and state taxes, using published 1999 marginal Federal
tax rates and marginal state tax rates currently available and scheduled to be
in effect. The table assumes that federal taxable income is equal to state
income subject to tax, and for cases in which more than one state rate falls
within a Federal bracket, the state rate corresponding to the highest income
within that Federal bracket is used. The combined state and Federal tax brackets
shown reflect the fact that state tax payments are currently deductible for
Federal tax purposes and for Georgia tax purposes. The tables do not reflect any
local taxes or any taxes other than personal income taxes. The tables illustrate
what you would have to earn on taxable investments to equal the tax-exempt
estimated current return for your income tax bracket. A taxpayer's marginal tax
rate is affected by both his taxable income and his adjusted gross income.
Locate your adjusted gross and your taxable income (which is your adjusted gross
income reduced by any deductions and exemptions), then locate your tax bracket
based on joint or single tax filing. Read across to the equivalent taxable
estimated current return you would need to match the tax-free income.

 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                  FEDERAL
    FEDERAL      ADJUSTED      COMBINED
    TAXABLE        GROSS       STATE AND                    TAX-FREE ESTIMATED CURRENT RETURN
    INCOME        INCOME        FEDERAL       --------------------------------------------------------------
   (1,000'S)     (1,000'S)     TAX RATE1      4.00%   4.25%   4.50%   4.75%   5.00%   5.25%   5.50%   5.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $    0- 43.05 $    0-126.60      20.0   %     5.00    5.31    5.63    5.94    6.25    6.56    6.88    7.19
  43.05-104.50      0-126.60      32.0         5.88    6.25    6.62    6.99    7.35    7.72    8.09    8.46
               126.60-189.95      33.0         5.97    6.34    6.72    7.09    7.46    7.84    8.21    8.58
 104.05-158.55      0-126.60      35.0         6.15    6.54    6.92    7.31    7.69    8.08    8.46    8.85
               126.60-189.95      36.0         6.25    6.64    7.03    7.42    7.81    8.20    8.59    8.98
               189.95-312.45      38.5         6.50    6.91    7.32    7.72    8.13    8.54    8.94    9.35
 158.55-283.15 126.60-189.95      41.0         6.78    7.20    7.63    8.05    8.47    8.90    9.32    9.75
               189.95-312.45      43.5         7.08    7.52    7.96    8.41    8.85    9.29    9.73   10.18
                 Over 312.45      41.0   2     6.78    7.20    7.63    8.05    8.47    8.90    9.32    9.75
   Over 283.15 189.95-312.45      47.5         7.62    8.10    8.57    9.05    9.52   10.00   10.48   10.95
                 Over 312.45      44.0   3     7.14    7.59    8.04    8.48    8.93    9.38    9.82   10.27
</TABLE>

  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                  FEDERAL
    FEDERAL      ADJUSTED      COMBINED
    TAXABLE        GROSS       STATE AND                    TAX-FREE ESTIMATED CURRENT RETURN
    INCOME        INCOME        FEDERAL       --------------------------------------------------------------
   (1,000'S)     (1,000'S)     TAX RATE1      4.00%   4.25%   4.50%   4.75%   5.00%   5.25%   5.50%   5.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $    0- 25.75 $    0-126.60      20.0         5.00    5.31    5.63    5.94    6.25    6.56    6.88    7.19
  25.75- 62.45      0-126.60      32.0         5.88    6.25    6.62    6.99    7.35    7.72    8.09    8.46
  62.45-130.25      0-126.60      35.0         6.15    6.54    6.92    7.31    7.69    8.08    8.46    8.85
               126.60-249.10      36.5         6.30    6.69    7.09    7.48    7.87    8.27    8.66    9.06
 130.25-283.15 126.60-249.10      41.5         6.84    7.26    7.69    8.12    8.55    8.97    9.40    9.83
                 Over 249.10      41.0   2     6.78    7.20    7.63    8.05    8.47    8.90    9.32    9.75
   Over 283.15   Over 249.10      44.0   3     7.14    7.59    8.04    8.48    8.93    9.38    9.82   10.27
</TABLE>

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

    1 The table reflects the effect of the limitations on itemized deductions
and the deduction for personal exemptions. They were designed to phase out
certain benefits of these deductions for higher income taxpayers. These
limitations, in effect, raise the current maximum marginal combined Federal and
state tax rate to approximately 47.52 percent for taxpayers filing a joint
return and entitled to four personal exemptions and to approximately 44.24
percent for taxpayers filing a single return entitled to only one personal
exemption. These limitations are subject to certain maximums, which depend on
the number of exemptions claimed and the total amount of the taxpayer's itemized
deductions. For example, the limitation on itemized deductions will not cause a
taxpayer to lose more than 80% of his allowable itemized deductions, with
certain exceptions.

    2 Combined Federal and state tax rate reverts to 39.62% after the 80% cap on
the limitation on itemized deductions has been met.

    3 Combined Federal and state tax rate reverts to 43.02% after the 80% cap on
the limitation on itemized deductions has been met.

                                      A-3
<PAGE>
                                   APPENDIX B

                            PENNSYLVANIA DISCLOSURE

ECONOMIC FACTORS--PENNSYLVANIA

    RISK FACTORS--Prospective investors should consider the financial
difficulties and pressures that the Commonwealth of Pennsylvania (the
"Commonwealth" or "Pennsylvania") and certain of its municipal subdivisions have
undergone. Both the Commonwealth and the City of Philadelphia have historically
experienced significant revenue shortfalls. There can be no assurance that the
Commonwealth will not experience further declines in economic conditions or that
portions of the municipal obligations purchased by the Fund will not be affected
by such declines. Without intending to be complete, the following briefly
summarizes some of these difficulties and the current financial situation, as
well as some of the complex factors affecting the financial situation in the
Commonwealth. It is derived from sources that are generally available to
investors and is based in part on information obtained from various agencies in
the Commonwealth. No independent verification has been made of the following
information.

    STATE ECONOMY--The Commonwealth of Pennsylvania is one of the most populous
states, ranking fifth behind California, New York, Texas and Florida.
Pennsylvania is an established yet growing state with a diversified economy. It
is the headquarters for many major corporations. Pennsylvania had been
historically identified as a heavy industry state. That reputation has changed
over the last thirty years as the coal, steel and railroad industries declined
and the Commonwealth's business environment readjusted to reflect a more
diversified industrial base. This economic readjustment was a direct result of a
long-term shift in jobs, investment and workers away from the northeast part of
the nation. Currently, the major sources of growth in Pennsylvania are in the
service sector, including trade, medical and the health services, education and
financial institutions.

    Pennsylvania's agricultural industries remain an important component of the
Commonwealth's economic structure, accounting for more than $3.6 billion in crop
and livestock products annually. Agribusiness and food-related industries
support $39 billion in economic activity annually. Over 51,000 farms form the
backbone of the State's agricultural economy. Farmland in Pennsylvania includes
over four million acres of harvested cropland and four million acres of pasture
and farm woodlands--nearly one-third of the Commonwealth's total land area.
Agricultural diversity in the Commonwealth is demonstrated by the fact that
Pennsylvania ranks among the top ten states in the production of a number of
agricultural products.

    Non-agricultural employment in Pennsylvania over the ten years ending in
1997 increased at an annual rate of 0.76 percent. This rate compares to a 0.17
percent rate for the Middle Atlantic region and a 1.69 percent rate for the
United States during the period from 1988 through 1997. For the five years
ending with 1997, employment in the Commonwealth has increased 5.4 percent. The
growth in employment experienced in Pennsylvania during this period is higher
than the 4.8 percent growth in the Middle Atlantic region.

    Non-manufacturing employment in Pennsylvania has increased in recent years
to 82.7 percent of total employment in 1997. Consequently, manufacturing
employment constitutes a diminished share of total employment within the
Commonwealth. Manufacturing, contributing 17.3 percent of 1997 non-agricultural
employment has fallen behind both the services sector and the trade sector as
the largest single source of employment within the Commonwealth. In 1997, the
services sector accounted for 31.6 percent of all non-agricultural employment
while the trade sector accounted for 22.5 percent.

    Pennsylvania's annual average unemployment rate was below the national
average from 1986 until 1990. Slower economic growth caused the unemployment
rate in the Commonwealth to rise to 6.9 percent in 1991 and 7.5 percent in 1992.
The resumption of faster economic growth resulted in a decrease in the
Commonwealth's unemployment rate to 7.1 percent in 1993. In 1994 and 1995,
Pennsylvania's annual average unemployment rate was below the Middle Atlantic
Region's average, but slightly higher than that of the United States. In 1996,
Pennsylvania's annual average unemployment rate was 5.3 percent, whereas the
annual average unemployment rate in the United States was 5.4 percent.
Pennsylvania's 1997 annual average unemployment rate was 5.2 percent, compared
to 4.9 percent for the United States. As of June 1998, the seasonally adjusted
unemployment rate for the Commonwealth was 4.3 percent compared to 4.5 percent
for the United States.

    STATE BUDGET--The Commonwealth operates under an annual budget that is
formulated and submitted for legislative approval by the Governor each February.
The Pennsylvania Constitution requires that the Governor's budget proposal
consist of three parts: (i) a balanced operating budget setting forth proposed
expenditures and estimated revenues from all sources and, if estimated revenues
and available surplus are less than proposed expenditures, recommending specific
additional sources of revenue sufficient to pay the deficiency; (ii) a capital
budget setting forth proposed expenditures to be financed from the proceeds of
obligations of the Commonwealth or its agencies or from operating funds; and
(iii) a financial plan for not less than the succeeding five fiscal years, that
includes for each year projected operating

                                      B-1
<PAGE>
expenditures and estimated revenues and projected expenditures for capital
projects. The General Assembly may add, change or delete any items in the budget
prepared by the Governor, but the Governor retains veto power over the
individual appropriations passed by the legislature. The Commonwealth's fiscal
year begins on July 1 and ends on June 30.

    All funds received by the Commonwealth are subject by statute to
appropriation in specific amounts by the General Assembly or by executive
authorization by the Governor. Total operating budget appropriations enacted by
the General Assembly may not exceed the ensuing year's actual and estimated
revenues, plus (less) the unappropriated fund balance (deficit) of the preceding
year, except for constitutionally authorized debt service payments.
Appropriations from the principal operating funds of the Commonwealth (the
General Fund, the Motor License Fund and the State Lottery Fund) are generally
made for one fiscal year and are returned to the unappropriated surplus of the
fund if not spent or encumbered by the end of the fiscal year. The Constitution
specifies that a surplus of operating funds at the end of a fiscal year must be
appropriated for the ensuing year.

    Pennsylvania uses the "fund" method of accounting. For purposes of
government accounting, a "fund" is an independent fiscal and accounting entity
with a self-balancing set of accounts, recording cash and/or other resources
together with all related liabilities and equities that are segregated for the
purpose of carrying on specific activities or attaining certain objectives in
accordance with the fund's special regulations, restrictions or limitations. In
the Commonwealth, funds are established by legislative enactment or in certain
cases by administrative action. Over 150 funds have been established for the
purpose of recording the receipt and disbursement of moneys received by the
Commonwealth. Annual budgets are adopted each fiscal year for the principal
operating funds of the Commonwealth and several other special revenue funds.
Expenditures and encumbrances against these funds may only be made pursuant to
appropriation measures enacted by the General Assembly and approved by the
Governor. The General Fund, the Commonwealth's largest fund, receives all tax
revenues, non-tax revenues and federal grants and entitlements that are not
specified by law to be deposited elsewhere. The majority of the Commonwealth's
operating and administrative expenses are payable from the General Fund. Debt
service on all bond indebtedness of the Commonwealth, except that issued for
highway purposes or for the benefit of other special revenue funds, is payable
from the General Fund.

    Financial information for the principal operating funds of the Commonwealth
are maintained on a budgetary basis of accounting, which is used for the purpose
of ensuring compliance with the enacted operating budget. Since 1984, the
Commonwealth has also prepared annual financial statements in accordance with
generally accepted accounting principles ("GAAP"). Budgetary basis financial
reports are based on a modified cash basis of accounting as opposed to a
modified accrual basis of accounting prescribed by GAAP. The budgetary basis
financial information is adjusted at fiscal year-end to reflect appropriate
accruals for financial reporting in conformity with GAAP.

    FINANCIAL CONDITION AND RESULTS OF OPERATIONS.-- The period from fiscal year
1993 through fiscal 1997 was a time of steady, modest economic growth and low
rates of inflation. These economic conditions, together with tax reductions in
the several years following the tax rate increases and tax base expansions
enacted in fiscal 1991 for the General Fund, produced tax revenue gains
averaging 4.1 percent per year during the period. Total revenues during this
same period increased at a 4.7 percent average rate. Intergovernmental revenue
recorded the largest percentage gain during this period, averaging 8.1 percent.
Expenditures and other uses during the fiscal 1993 through fiscal 1997 period
rose at a 3.8 percent rate, led by an average 13.8 percent annual increase for
protection of persons and property program costs. This high rate of increase
reflects the cost to acquire, staff and operate expanded prison facilities to
house a greater population. Public health and welfare program costs expanded an
average 5.4 percent annually during this period, the second largest rate of
increase for program categories. At the close of fiscal 1997, the fund balance
for the governmental fund type totaled $2,900.9 million, an increase of $914.6
million.

    FINANCIAL RESULTS FOR RECENT FISCAL YEARS (GAAP BASIS).-- During the five
year period from fiscal 1993 through fiscal 1997, revenues and other sources
increased by an average 4.7 percent annually. Tax revenues during this same
period increased by an annual average of 4.1 percent. Intergovernmental
revenues, at an 8.5 percent annual average rate of increase, were the revenue
source with the largest rate of growth over the five-year period.

    Expenditures and other uses during the fiscal 1993 through fiscal 1997
period rose at an average annual rate of 4.9 percent. Program costs for
protection of persons and property increased an average 13.8 percent annually,
the largest growth rate of all programs. Public health and welfare program costs
increased at a 5.7 percent annual average rate during the period. Efforts to
control costs for various social programs and the presence of favorable economic
conditions have helped restrain these costs.

    The fund balance at June 30, 1997 totaled $1,364.9 million, an increase of
$729.7 million over the $635.2 million balance at June 30, 1996.

    FISCAL 1996 FINANCIAL RESULTS (BUDGETARY BASIS).--The unappropriated surplus
for Commonwealth revenues (prior to transfers to Tax Stabilization Reserve Fund)
at the close of the 1996 fiscal year for the General Fund was $183.8 million,

                                      B-2
<PAGE>
$65.5 million above estimate. Fiscal 1996 was the fifth consecutive fiscal year
the Commonwealth reported an increase in the fiscal year-end unappropriated
balance. Expenditures from Commonwealth revenues for the fiscal year, including
$113.0 million of supplemental appropriations but excluding pooled financing
expenditures, totaled $16,074.7 million. Expenditures exceeded available
revenues and lapses by $253.2 million. The difference was funded from a planned
partial drawdown of the $437.0 million fiscal year adjusted beginning
unappropriated surplus.

    Commonwealth revenues (prior to tax refunds) for the 1996 fiscal year
increased by $113.9 million over the prior fiscal year to $16,338.5 million
representing a growth rate of 0.7 percent. The Commonwealth has estimated that
tax changes enacted for the 1996 fiscal year reduced Commonwealth revenues by
$283.4 million representing 1.7 percentage points of fiscal 1996 growth in
Commonwealth revenues. The most significant tax changes enacted for the 1996
fiscal year were (i) the reduction of the corporate net income tax rate to 9.99
percent; (ii) double weighing of the sales factor of the corporate net income
apportionment calculation; (iii) an increase in the maximum annual allowance for
a net operating loss deduction from $0.5 million to $1.0 million; (iv) an
increase in the basic exemption amount for the capital stock and franchise tax;
(v) the repeal of the tax on annuities; and (vi) the elimination of inheritance
tax on transfers of certain property to surviving spouses.

    FISCAL 1997 FINANCIAL RESULTS (BUDGETARY BASIS).--The unappropriated balance
of Commonwealth revenues increased during the 1997 fiscal year by $432.9
million. Higher than estimated revenues and slightly lower expenditures than
budgeted caused the increase. The unappropriated balance rose from an adjusted
amount of $158.5 million at the beginning of fiscal 1997, to $591.4 million
(prior to reserves for transfer to the Tax Stabilization Reserve Fund) at the
close of the fiscal year. Transfers to the Tax Stabilization Reserve Fund for
fiscal 1997 operations are expected to be $88.7 million, which represents the
normal fifteen percent of the ending unappropriated balance, plus an additional
$100 million authorized by the General Assembly when it enacted the fiscal 1998
budget.

    Commonwealth revenues (prior to tax refunds) during the 1997 fiscal year
totaled $17,320.6 million, $576.1 (3.4 percent) above the estimate made at the
time the budget was enacted. Revenue from taxes was the largest contributor to
higher than estimated receipts. Tax revenue in fiscal 1997 grew 6.1 percent over
tax revenues in fiscal 1996. This rate of increase was not adjusted for
legislated tax reductions that affected receipts during both of those fiscal
years and therefore understates the actual underlying rate of growth of tax
revenue during fiscal 1997. Receipts from the personal income tax produced the
largest single component of higher revenues for the fiscal year. Personal income
collections were $236.3 million over estimate representing a 6.9 percent
increase over fiscal 1996 receipts. Receipts of the sales and use tax were
$185.6 million over estimate representing a 6.2 percent increase. Collections of
corporate taxes, led by the capital stock and franchise and the gross receipt
taxes, also exceeded their estimates for the fiscal year. Non-tax revenues were
$19.8 million (5.8 percent) over estimate mostly due to higher than anticipated
interest earnings.

    Expenditures from Commonwealth revenues (excluding pooled financing
expenditures) during fiscal 1997 totaled $16,347.7 million and were close to the
estimate made in February 1997 with the presentation of the Governor's fiscal
1998 budget request. Total expenditures represent an increase over fiscal 1996
expenditures of 1.7 percent.

    FISCAL 1998 FINANCIAL RESULTS (BUDGETARY BASIS).--Operations during the 1998
fiscal year increased the unappropriated balance of commonwealth revenues during
that period by $86.4 million to $488.7 million at June 30, 1998 (prior to
reserves for transfer to the Tax Stabilization Reserve Fund). Higher than
estimated revenues, offset in part by increased reserves for tax refunds, and
slightly lower expenditures than budgeted were responsible for the increase.
Transfers to the Tax Stabilization Reserve Fund for fiscal 1998 operations will
total $223.3 million consisting of $73.3 million representing the required
transfer of fifteen percent of the ending unappropriated surplus balance, plus
an additional $150 million authorized by the General Assembly when it enacted
the fiscal 1999 budget. With these transfers, the balance in the Tax
Stabilization Reserve Fund will exceed $664 million and represents 3.7 percent
of fiscal 1998 revenues.

    Commonwealth revenues (prior to tax refunds) during the 1998 fiscal year
totaled $18,123.2 million, $676.1 million (3.9 percent) above the estimate made
at the time the budget was enacted. Tax revenue received in fiscal 1998 grew 4.8
percent over tax revenues received during fiscal 1997. This rate of increase
includes the effect of legislated tax reductions that affected receipts during
both fiscal years and therefore understates the actual underlying rate of growth
of tax revenue during fiscal 1998. Receipts from the personal income tax
produced the largest single component of higher revenues during fiscal 1998.
Personal income tax collections were $416.6 million over estimate representing
an 8.5 percent increase over fiscal 1997 receipts. Receipts of the sales and use
tax were $6.2 million over estimate representing a 1.9 percent increase.
Collections of all corporate taxes exceeded their estimate for the fiscal year,
led by the capital stock and franchise tax and the corporate net income tax
which were over estimate by 7.8 percent and 2.7 percent, respectively. Non-tax
revenues were $27.5 million (8.6 percent) over estimate, mostly due to greater
than anticipated interest earnings for the fiscal year.

    Expenditures from all fiscal 1998 appropriations of Commonwealth revenues
totaled $17,229.8 million (excluding pooled financing expenditures and net of
current year lapses). This amount represents an increase of 4.5 percent over
fiscal 1997 appropriation expenditures.

                                      B-3
<PAGE>
    Fiscal 1999 Budget: The budget for fiscal 1999 was enacted in April 1998 at
which time the official revenue estimate for the 1999 fiscal year was
established at $18,456.6 million. The official revenue estimate is based on an
economic forecast for national gross domestic product, on a year-over-year
basis, to slow from an estimated annualized 3.9 percent rate in the fourth
quarter of 1997 to a projected 1.8 percent annualized growth rate by the second
quarter of 1999. The forecast of slowing economic activity is based on the
expectation that consumers will reduce their pace of spending, particularly on
motor vehicles, housing and other durable goods. Business is also expected to
trim its spending on fixed investments. Foreign demand for domestic goods is
expected to decline in reaction to economic difficulties in Asia and Latin
America, while an economic recovery in Europe is expected to proceed slowly. The
underlying growth rate, excluding any effect of scheduled or proposed tax
changes, for the General Fund fiscal 1999 official revenue estimate if 3.0
percent over actual fiscal 1998 revenues. When adjusted to include the estimated
effect of enacted tax changes, fiscal 1999 Commonwealth revenues are projected
to increase by 1.66 percent over actual Commonwealth revenues for fiscal 1998.

    Tax reductions anticipated to be included in the enacted 1999 fiscal year
budget totaled an estimated $241.0 million for fiscal 1999. Of the anticipated
reductions, legislation representing tax reductions totaling $15 million has not
yet been passed by the General Assembly. All estimates for fiscal 1999 assume
enactment of those tax reductions currently pending before the General Assembly.

    Appropriations enacted for fiscal 1999 are 4.1 percent ($705.1 million)
above the appropriations enacted for fiscal 1998 (including supplemental
appropriations). Major increases in expenditures budgeted for fiscal 1999
include: (i) $249.5 million in direct support of local school district education
costs (local school districts will also benefit from an estimated $104 million
of reduced contributions by school districts to their worker's retirement costs
from a reduced employer contribution rate); (ii) $60.4 million for higher
education, including scholarship grants; (iii) $56.5 million to fund the
correctional system including $21 million to operate a new correctional
facility; (iv) $121.1 million for long-term care medical assistance costs; (v)
$14.4 million for technology and Year 2000 investments; (vi) $55.9 million to
fund the first year's cost of a July 1, 1998 annuitant cost of living increase
for state and school district employees and (vii) $20 million to replace bond
funding for equipment loans for volunteer fire and rescue companies. The balance
of the increase is spread over many departments and program operations.

    The enacted fiscal 1999 budget assumes the draw down of the $265.4 million
beginning budgetary balance by $141.1 million to an estimated closing balance,
prior to transfer of the required portion to the Tax Stabilization Reserve Fund,
of $124.3 million. The amount of the anticipated draw down does not consider the
availability of appropriation lapses normally occurring during a fiscal year
that are used to fund supplemental appropriations or increase unappropriated
surplus.

    DEBT LIMITS AND OUTSTANDING DEBT.--The Pennsylvania Constitution permits the
issuance of the following types of debt: (i) debt to suppress insurrection or
rehabilitate areas affected by disaster; (ii) electorate approved debt; (iii)
debt for capital projects subject to an aggregate outstanding debt limit of 1.75
times the annual average tax revenues of the preceding five fiscal years; and
(iv) tax anticipation notes payable in the fiscal year of issuance.

    Under the Pennsylvania Fiscal Code, the Auditor General is required to
certify to the Governor and the General Assembly certain information regarding
the Commonwealth's indebtedness. According to the February 28, 1998 Auditor
General certificate, the average annual tax revenues deposited in all funds in
the five fiscal years ended June 30, 1997 was approximately $19.6 billion,
outstanding net debt totaled $3.7 billion at February 28, 1998, and therefore,
the net debt limitation for the 1998 fiscal year is $30.6 billion. At February
28, 1998, the amount of debt authorized by law to be issued, but not yet
incurred, was $22.7 billion.

    Outstanding general obligation debt totaled $4,724.5 million at June 30,
1998, a decrease of $70.6 million from June 30, 1997. Over the ten-year period
ending June 30, 1998, total outstanding general obligation debt increased at an
annual rate of 0.1 percent. Within the most recent five-year period, outstanding
general obligation debt has decreased at an annual rate of 1.3 percent.

    DEBT RATINGS.--All outstanding general obligation bonds of the Commonwealth
are rated "AA-" by Standard & Poor's Corporation and "Aa3" by Moody's Investors
Service.

    CITY OF PHILADELPHIA.--The City of Philadelphia (the "City" or
"Philadelphia") is the largest city in the Commonwealth, with an estimated
population of 1,585,577 according to the 1990 Census. Philadelphia experienced a
series of general fund deficits for fiscal years 1988 through 1992 which
culminated in serious financial difficulties for the City. In its 1992
Comprehensive Annual Financial Report, Philadelphia reported a cumulative
general fund deficit of $71.4 million for fiscal year 1992.

    In June 1991, the Pennsylvania legislature established the Pennsylvania
Intergovernmental Cooperation Authority ("PICA"), a five-member board to assist
Philadelphia in remedying fiscal emergencies. PICA is designed to provide
assistance through the issuance of funding debt and to make factual findings and
recommendations to Philadelphia

                                      B-4
<PAGE>
concerning its budgetary and fiscal affairs. The legislation empowered PICA to
issue notes and bonds on behalf of Philadelphia, and also authorized
Philadelphia to levy a one-percent sales tax the proceeds of which would be used
to pay off the bonds. In return for PICA's fiscal assistance, Philadelphia is
required, among other things, to establish five-year financial plans that
include balanced annual budgets. Under the legislation, if Philadelphia does not
comply with such requirements, PICA may withhold bond revenues and certain state
funding. At this time, the City is operating under a five-year fiscal plan
approved by PICA on June 9, 1998. As of August 1, 1998, PICA has issued
approximately $1,761.7 million of its Special Tax Revenue Bonds. The financial
assistance has included the refunding of certain city general obligation bonds,
funding of capital projects and the liquidation of the City's Cumulative General
Fund balance deficit as of June 30, 1992 of $224.9 million.

    No further PICA bonds are to be issued by PICA for the purpose of financing
a capital project or deficit as the authority for such bond sales expired on
December 31, 1994. PICA's authority to issue debt for the purpose of financing a
cash flow deficit expired on December 31, 1996. Its ability to refund existing
outstanding debt is unrestricted. PICA had $1,055.0 million in Special Tax
Revenue Bonds outstanding as of June 30, 1998.

    The audited General Fund balance of the City as of June 30, 1995, 1996 and
1997 showed a surplus of approximately $80.5 million, $118.5 million and $128.8
million, respectively.

    S&P's rating on Philadelphia's general obligation bonds is "BBB." Moody's
rating is currently "Baa2."

    LITIGATION.--The Commonwealth is a party to numerous lawsuits in which an
adverse final decision could materially affect the Commonwealth's governmental
operations and consequently its ability to pay debt service on its obligations.
The Commonwealth also faces tort claims made possible by the limited waiver of
sovereign immunity effected by Act 152, approved September 28, 1978, as amended.
Under the Act, damages for any loss are limited to $250,000 per person and $1
million for each accident.

    YEAR 2000 PLANNING.--A well-established standard in the computer industry
governing traditional programming practices is expected to result in many
current computer systems being unable to recognize dates beyond the year 1999.
As a result, computers worldwide may begin to malfunction by producing erroneous
data or failing completely as the year 2000 draws near. The Governor has made
fixing the year 2000 problem a top priority for Pennsylvania state agencies. At
the Governor's direction, Pennsylvania has begun an aggressive program to make
its computer systems year 2000-compatible and to identify potential problems
with entities outside state government with which the Commonwealth does business
or exchanges data.

    An initial assessment of state agencies' computer resources was completed in
June 1996. This overview assessment was used to develop the Governor's Year 2000
Action Plan, which tracks state agencies' computer programs through a three-step
process of correction, testing, and implementation. Under this action plan,
45,937 mission-critical and non-mission critical computer programs used by state
agencies are scheduled for corrective measures to ensure they will be year
2000-compatible. Mission-critical computer programs are those which impact the
health, safety and welfare of the Commonwealth and its citizens, and for which
failure to be year compliant could have a material and adverse impact upon
operations of the Commonwealth. During a press conference on July 22, 1998,
Secretary of Administration, Thomas G. Paese announced that repairs to 98
percent of all mission-critical computer programs have been completed; and all
non-mission-critical programs will be corrected by December 31, 1998, Secretary
Paese also announced that 63 percent of non-mission-critical programs have
already been made Year 2000-compliant and that the Commonwealth is 116 percent
ahead of schedule to meet its December 31, 1998 deadline. The projected cost of
the Commonwealth's year 2000 modification work is $39.5 million and is being
paid from appropriations from current revenues.

PENNSYLVANIA TAXABLE ESTIMATED CURRENT RETURN TABLE

    The following tables show the approximate taxable estimated current returns
for individuals that are equivalent to tax-exempt estimated current returns
under combined Federal and state taxes, using published 1999 marginal Federal
tax rates and marginal state tax rates currently available and scheduled to be
in effect. The combined state and Federal tax brackets shown reflect the fact
that state tax payments are currently deductible for Federal tax purposes. The
table does not reflect any local taxes or any taxes other than personal income
taxes. The tables illustrate what you would have to earn on taxable investments
to equal the tax-exempt estimated current return for your income tax bracket. A
taxpayer's marginal tax rate is affected by both his taxable income and his
adjusted gross income. Locate your adjusted gross and your taxable income (which
is your adjusted gross income reduced by any deductions and exemptions), then
locate your tax bracket based on joint or single tax filing. Read across to the
equivalent taxable estimated current return you would need to match the tax-free
income.

                                      B-5
<PAGE>
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                  FEDERAL
    FEDERAL      ADJUSTED      COMBINED
    TAXABLE        GROSS       STATE AND                    TAX-FREE ESTIMATED CURRENT RETURN
    INCOME        INCOME        FEDERAL       --------------------------------------------------------------
   (1,000'S)     (1,000'S)     TAX RATE1      4.00%   4.25%   4.50%   4.75%   5.00%   5.25%   5.50%   5.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $    0- 43.05 $    0-126.60      17.5   %     4.85    5.15    5.45    5.76    6.06    6.36    6.67    6.97
  43.05-104.05      0-126.60      30.0         5.71    6.07    6.43    6.79    7.14    7.50    7.86    8.21
               126.60-189.95      31.0         5.80    6.16    6.52    6.88    7.25    7.61    7.97    8.33
 104.05-158.55      0-126.60      33.0         5.97    6.34    6.72    7.09    7.46    7.84    8.21    8.58
               126.60-189.95      34.0         6.06    6.44    6.82    7.20    7.58    7.95    8.33    8.71
               189.95-312.45      36.5         6.30    6.69    7.09    7.48    7.87    8.27    8.66    9.06
 158.55-283.15 126.60-189.95      39.0         6.56    6.97    7.38    7.79    8.20    8.61    9.02    9.43
               189.95-312.45      42.0         6.90    7.33    7.76    8.19    8.62    9.05    9.48    9.91
                 Over 312.45      39.0   2     6.56    6.97    7.38    7.79    8.20    8.61    9.02    9.43
   Over 283.15 189.95-312.45      46.0         7.41    7.87    8.33    8.80    9.26    9.72   10.19   10.65
                 Over 312.45      42.5   3     6.96    7.39    7.83    8.26    8.70    9.13    9.57   10.00
</TABLE>

  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                  FEDERAL
    FEDERAL      ADJUSTED      COMBINED
    TAXABLE        GROSS       STATE AND                    TAX-FREE ESTIMATED CURRENT RETURN
    INCOME        INCOME        FEDERAL       --------------------------------------------------------------
   (1,000'S)     (1,000'S)     TAX RATE1      4.00%   4.25%   4.50%   4.75%   5.00%   5.25%   5.50%   5.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $    0- 25.75 $    0-126.60      17.5         4.85    5.15    5.45    5.76    6.06    6.36    6.67    6.97
  25.75- 62.45      0-126.60      30.0         5.71    6.07    6.43    6.79    7.14    7.50    7.86    8.21
  62.45-130.25      0-126.60      33.0         5.97    6.34    6.72    7.09    7.46    7.84    8.21    8.58
               126.60-249.10      34.5         6.11    6.49    6.87    7.25    7.63    8.02    8.40    8.78
 130.25-283.15 126.60-249.10      39.5         6.61    7.02    7.44    7.85    8.26    8.68    9.09    9.50
                 Over 249.10      39.0   2     6.56    6.97    7.38    7.79    8.20    8.61    9.02    9.43
   Over 283.15   Over 249.10      42.5   3     6.96    7.39    7.83    8.26    8.70    9.13    9.57   10.00
</TABLE>

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

    1 The table reflects the effect of the limitations on itemized deductions
and the deduction for personal exemptions. They were designed to phase out
certain benefits of these deductions for higher income taxpayers. These
limitations, in effect, raise the current maximum marginal combined tax rate to
approximately 45.83 percent for taxpayers filing a joint return and entitled to
four personal exemptions and to approximately 42.45 percent for taxpayers filing
a single return entitled to only one personal exemption. These limitations are
subject to certain maximums, which depend on the number of exemptions claimed
and the total amount of the taxpayer's itemized deductions. For example, the
limitation on itemized deductions will not cause a taxpayer to lose more than
80% of his allowable itemized deductions, with certain exceptions.

    2 Marginal combined tax rate reverts to 37.79% after the 80% cap on the
limitation on itemized deductions has been met.

    3 Marginal combined tax rate reverts to 41.29% after the 80% cap on the
limitation on itemized deductions has been met.

                                      B-6
<PAGE>
                       CONTENTS OF REGISTRATION STATEMENT

A.  BONDING ARRANGEMENTS OF DEPOSITOR:

    The Depositor has obtained the following Stockbrokers Blanket Bonds for its
officers, directors and employees:

<TABLE>
<S>                                                                       <C>
    INSURER/POLICY NO.                                                      AMOUNT

    Reliance Insurance Company                                            $26,000,000
    B 262 6895
</TABLE>

B.  THIS AMENDMENT OF REGISTRATION STATEMENT COMPRISES THE FOLLOWING PAPERS AND
DOCUMENTS:

                                The facing sheet

                                 The Prospectus

                                 The signatures

                         Consents of Independent Public
                      Accountants and Counsel as indicated

                         Exhibits as listed on page S-5

C.  EXPLANATORY NOTE:

    This Amendment No. 1 to the Registration Statement may contain multiple
separate prospectuses. Each prospectus will relate to an individual unit
investment trust and will consist of a Part A, a Part B and an Information
Supplement. Each prospectus will be identical with the exception of the
respective Part A which will contain the financial information specific to such
underlying unit investment trust.

D.  UNDERTAKINGS:

    1.  The Information Supplement to the Trust will not include third party
financial information.

                                      S-1
<PAGE>
                                   SIGNATURES

    The Registrant, Nuveen Tax-Free Unit Trust, Series 1093 hereby identifies
Series 401, 507, 512, 515, 517, 519, 723, 814 and 823 of the Nuveen Tax-Exempt
Unit Trust (the former name of the Nuveen Tax-Free Unit Trust) for purposes of
the representations required by Rule 487 and represents the following:

    (1)  that the portfolio securities deposited in the series as to the
securities of which this Registration Statement is being filed do not differ
materially in type or quality from those deposited in such previous series;

    (2)  that, except to the extent necessary to identify the specific portfolio
securities deposited in, and to provide essential financial information for, the
series with respect to the securities of which this Registration Statement is
being filed, this Registration Statement does not contain disclosures that
differ in any material respect from those contained in the registration
statements for such previous series as to which the effective date was
determined by the Commission or the staff; and

    (3)  that it has complied with Rule 460 under the Securities Act of 1933.


    Pursuant to the requirements of the Securities Act of 1933, the Registrant,
Nuveen Tax-Free Unit Trust, Series 1093 has duly caused this Amendment to
Registration Statement to be signed on its behalf by the undersigned thereunto
duly authorized in the City of Chicago and State of Illinois on June 29, 1999.


                                          NUVEEN TAX-FREE UNIT TRUST, SERIES
                                          1093
                                                             (Registrant)


                                          By JOHN NUVEEN & CO. INCORPORATED
                                                             (Depositor)

                                          By:  Anna Kucinskis
                                          --------------------------------------
                                                             Vice President

                                          Attest:  Larry W. Martin
                                          --------------------------------------
                                                             Assistant Secretary

                                      S-2
<PAGE>
    Pursuant to the requirements of the Securities Act of 1933, this Amendment
of Registration Statement has been signed below by the following persons in the
capacities and on the dates indicated:


<TABLE>
<CAPTION>
          SIGNATURE                        TITLE*                 DATE
<S>                            <C>                              <C>        <C>
Timothy T. Schwertfeger        Chairman, Board of Directors         )
                               Chief Executive Officer and          )
                               Director                             )
                                                                    )
John P. Amboian                Chief Financial Officer and          )             Larry W. Martin
                               Executive Vice President             )           Attorney-In-Fact**
                                                                    )
                                                                    )              June 29, 1999
Margaret E. Wilson             Vice President and Controller        )
                                                                    )
                                                                    )
                                                                    )
</TABLE>


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

* The titles of the persons named herein represent their capacity in and
relationship to John Nuveen & Co. Incorporated, the Depositor.

** The powers of attorney for Messrs. Amboian and Schwertfeger were filed as
Exhibit 6 to form N-8b-2 (File No. 811-08103) and for Ms. Wilson as Exhibit 6.2
to Nuveen Unit Trusts, Series 12 (File No. 333-49197).

                                      S-3
<PAGE>

1093


                         CONSENT OF CHAPMAN AND CUTLER

    The consent of Chapman and Cutler to the use of its name in the Prospectus
included in the Registration Statement is contained in its opinions filed by
this amendment as Exhibits 3.1 and 3.2 to the Registration Statement.

                            CONSENT OF STATE COUNSEL

    The consents of special counsel to the Fund for state tax matters to the use
of their names in the Prospectus included in the Registration Statement are
contained in their opinions filed by this amendment as Exhibit 3.3 to the
Registration Statement.

                    CONSENT OF KENNY S&P EVALUATION SERVICES

    The consent of Kenny S&P Evaluation Services to the use of its name in the
Prospectus included in the Registration Statement is filed by this amendment as
Exhibit 4.1 to the Registration Statement.

                      CONSENT OF CARTER, LEDYARD & MILBURN

    The consent of Carter, Ledyard & Milburn to the use of its name in the
Prospectus included in the Registration Statement is filed by this amendment as
Exhibit 4.2 to the Registration Statement.

                         CONSENT OF ARTHUR ANDERSEN LLP

    The consent of Arthur Andersen LLP to the use of its name in the Prospectus
included in the Registration Statement is filed by this amendment as Exhibit 4.3
to the Registration Statement.

                                      S-4
<PAGE>
                                LIST OF EXHIBITS

<TABLE>
<S>         <C>
1.1(a)      Copy of Standard Terms and Conditions of Trust between John Nuveen & Co. Incorporated,
            Depositor, and The Chase Manhattan Bank, Trustee (as Exibit 1.1 (a) to the Sponsor's
            Registration Statement on Form S-6 relating to Series 823 of the Fund (file No.
            33-62325) and incorporated herein by reference).
1.1(b)      Trust Indenture and Agreement.
2.1         Copy of Certificate of Ownership (Included in Exhibit 1.1(a) on pages 2 to 8,
            inclusive, and incorporated herein by reference).
3.1         Opinion of counsel as to legality of securities being registered.
3.2         Opinion of counsel as to Federal income tax status of securities being registered.
3.3         Opinions of special state counsel to the Fund for state tax matters as to income tax
            status to residents of the respective states of the units of the respective trusts and
            consents to the use of their names in the Prospectus.
3.4         Corporate opinion of Trustee's counsel.
3.5         Opinion of Trustee's counsel as to New York tax status.
4.1         Consent of Kenny S&P Evaluation Services.
4.2         Consent of Carter, Ledyard & Milburn.
4.3         Consent of Arthur Andersen LLP
6.1         List of Directors and Officers of Depositor and other related information (incorporated
            by reference to Form S-6 [File No. 33-62325] filed on September 7, 1995 on behalf of
            Nuveen Tax-Free Unit Trust, Series 823).
</TABLE>

                                      S-5

<PAGE>

EXHIBIT 1.1(B)
NUVEEN TAX-FREE UNIT TRUST, SERIES 1093
TRUST INDENTURE AND AGREEMENT
DATED JUNE 29, 1999


    This Trust Indenture and Agreement by and between John Nuveen & Co.
Incorporated, as Depositor and The Chase Manhattan Bank, as Trustee, sets forth
certain provisions in full and incorporates other provisions by reference to the
document entitled "Standard Terms and Conditions of Trust for Nuveen Tax-Free
Unit Trust, Series 823 and subsequent Series, effective September 7, 1995"
(herein called the "Standard Terms and Conditions of Trust"), and such
provisions as are set forth in full and such provisions as are incorporated by
reference constitute a single instrument. All references herein to Articles and
Sections are to Articles and Sections of the Standard Terms and Conditions of
Trust.

                                WITNESSETH THAT:

    In consideration of the promises and of the mutual agreements herein
contained, the Depositor and the Trustee, agree as follows:

                                     PART I
                     STANDARD TERMS AND CONDITIONS OF TRUST

    Subject to the Provisions of Part II hereof, all the provisions contained in
the Standard Terms and Conditions of Trust are herein incorporated by reference
in their entirety and shall be deemed to be a part of this instrument as fully
and to the same extent as though said provisions had been set forth in full in
this instrument.

                                    PART II
                     SPECIAL TERMS AND CONDITIONS OF TRUST

    The following special terms and conditions are hereby agreed to:

    (a)  The Bonds defined in Section 1.01(1) listed in Schedule A hereto have
been deposited in trust under this Trust Indenture and Agreement.

    (b)  The fractional undivided interest in and ownership of the Trust Fund
represented by each Unit for a Trust on the Initial Date of Deposit is the
amount set forth under the captions "Essential Information -- Fractional
Undivided Interest in the Trust per Unit" in the Prospectus.

    (c)  The number of Units created of a Trust are as set forth under the
caption "Essential Information -- Number of Units" in the Prospectus for each
Trust.

    (d)  Notwithstanding anything to the contrary in the Standard Terms and
Conditions of Trust, the phrase "Nuveen Tax-Exempt Unit Trust" shall be hereby
replaced with the phrase "Nuveen Tax-Free Unit Trust."
<PAGE>
    In Witness Whereof, John Nuveen & Co. Incorporated, has caused this Trust
Indenture and Agreement for Nuveen Tax-Free Unit Trust, Series 1093 to be
executed by its President, one of its Vice Presidents or one of its Assistant
Vice Presidents and its corporate seal to be hereto affixed and attested by its
Secretary or its Assistant Secretary and The Chase Manhattan Bank has caused
this Trust Indenture and Agreement to be executed by one of its Vice Presidents
or Second Vice Presidents and its corporate seal to be hereto affixed and
attested to by one of its Assistant Treasurers; all as of the day, month and
year first above written.

John Nuveen & Co. Incorporated,
Depositor
By Anna Kucinskis
Authorized Officer
(Seal)
Attest:
By Karen L. Healy
                   Assistant Secretary

The Chase Manhattan Bank, Trustee
By Alfred Miller
Assistant Vice President
(Seal)
Attest:
By Robert E. Lisk
                   Assistant Treasurer

                SCHEDULE A TO THE TRUST INDENTURE AND AGREEMENT
                         SECURITIES INITIALLY DEPOSITED
                                       IN
                    NUVEEN TAX-FREE UNIT TRUST, SERIES 1093

(Note:  Incorporated herein and made a part hereof is the "Schedule of
Investments" as set forth for each Trust in the Prospectus.)

<PAGE>
EXHIBIT 3.1

(ON CHAPMAN AND CUTLER LETTERHEAD)


June 29, 1999



John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois 60606
RE:  NUVEEN TAX-FREE UNIT TRUST, SERIES 1093


Gentlemen:


    We have served as counsel for you, as depositor of Nuveen Tax-Free Unit
Trust, Series 1093 (hereinafter referred to as the "Fund"), in connection with
the issuance under the Trust Indenture and Agreement dated the date hereof
between John Nuveen & Co. Incorporated, as Depositor, and The Chase Manhattan
Bank, as Trustee, of Units of fractional undivided interest in the one or more
Trusts of said Fund (hereinafter referred to as the "Units").


    In connection therewith, we have examined such pertinent records and
documents and matters of law as we have deemed necessary in order to enable us
to express the opinions hereinafter set forth.

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

    1.  The execution and delivery of the Trust Indenture and Agreement and the
establishment of book entry positions and the execution and issuance of
certificates evidencing the Units in the Trusts of the Fund have been duly
authorized; and

    2.  The book entry positions and certificates evidencing the Units in the
Trusts of the Fund when duly established or duly executed and delivered by the
Depositor and the Trustee in accordance with the aforementioned Trust Indenture
and Agreement, will constitute valid and binding obligations of such Trusts and
the Depositor in accordance with the terms thereof.


    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 333-81001) relating to the Units referred to
above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.


Respectfully submitted,

CHAPMAN AND CUTLER

<PAGE>
                                                                     EXHIBIT 3.2

(ON CHAPMAN AND CUTLER LETTERHEAD)


June 29, 1999


John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois 60606


RE:  Nuveen Tax-Free Unit Trust, Series 1093


Gentlemen:


    We have served as counsel for you, as Depositor of Nuveen Tax-Free Unit
Trust, Series 1093 (the "Fund") in connection with the issuance under the Trust
Indenture and Agreement, dated the date hereof between John Nuveen & Co.
Incorporated, as Depositor, and The Chase Manhattan Bank, as Trustee, of Units
of fractional undivided interest (the "Units"), as evidenced by a book entry
position or certificate, if requested by the purchaser of Units, in the one or
more Trusts of said Fund.



    We have also served as counsel for you in connection with all previous
Series of the Nuveen Tax-Free Unit Trust and as such have previously examined
such pertinent records and documents and matters of law as we have deemed
necessary, including (but not limited to) the Trust Indenture and Agreements
with respect to those series. We have also examined such pertinent records and
documents and matters of law as we have deemed necessary including (but not
limited to) the Trust Indenture and Agreement relating to Nuveen Tax-Free Unit
Trust, Series 1093.


    We have concluded that the Trust Indenture and Agreement for the Fund and
its counterpart in each of the prior issues of Nuveen Tax-Free Unit Trust are in
all material respects substantially identical. For purposes of the following
opinions, it is assumed that each asset of the Trust is debt, the interest on
which is excluded from gross income for federal income tax purposes.

    Based upon the foregoing, and upon such matters of law as we consider to be
applicable, we are of the opinion that, under existing federal income law:

    (i)  Each of the Trusts will not be an association taxable as a corporation
but will be governed by the provisions of Subchapter J (relating to Trusts) of
Chapter 1, Internal Revenue Code of 1986 (the "Code").

    (ii)  Each Unitholder will be considered as owning a pro rata share of each
asset of the respective Trust of the Fund in the proportion that the number of
Units of such Trust held by him bears to the total number of outstanding Units
of such Trust. Under Subpart E, Subchapter J of Chapter 1 of the Code, income of
each Trust will be treated as income of each Unitholder of the Trust in the
proportion described, and an item of Trust income will have the same character
in the hands of a Unitholder as it would have in the hands of the Trustee.
Accordingly, to the extent that the income of a Trust consists of interest and
original issue discount excludable from gross income under Section 103 of the
Code, such income will be excludable from Federal gross income of the
Unitholder, except in the case of a Unitholder who is a substantial user (or a
person related to such user) of a facility financed through issuance of any
industrial development bonds or certain private activity bonds held by the
Trust. In the case of such Unitholder who is a substantial user (and no other)
interest received with respect to his Units attributable to such industrial
development bonds or such private activity bonds is includable in his gross
income. To the extent the Trust holds bonds that are "specified private activity
bonds" within the meaning of Section 57(a)(5) of the Code, a Unitholder's pro
rata portion of the income on such Bonds will be included as an item of tax
preference in the computation of the alternative minimum tax applied to all
taxpayers (including non-corporate taxpayers) subject to the alternative minimum
tax. Moreover, in the case of certain corporations, interest on all of the Bonds
is included in computing the alternative minimum tax pursuant to Sections 56(c)
of the Code and the branch profits tax imposed by Section 884 of the Code with
respect to U.S. branches of foreign corporations.

    (iii)  Gain or loss will be recognized to a Unitholder upon redemption or
sale of his Units. Such gain or loss is measured by comparing the proceeds of
such redemption or sale with the adjusted basis of the Units. If a Bond is
acquired with accrued interest, that portion of the price paid for the accrued
interest is added to the tax basis of the Bond. When this accrued interest is
received, it is treated as a return of capital and reduces the tax basis of the
Bond. If a Bond is purchased for a premium, the amount of the premium is added
to the tax basis of the Bond. Bond premium is amortized over the remaining term
of the Bond, and the tax basis of the Bond is reduced each tax year by the
amount of the premium amortized in that tax year. Accordingly, Unitholders must
reduce the tax basis of their Units for their share of accrued interest received
by the Trust, if any, on Bonds delivered after the Unitholders pay for their
Units to the extent that such interest accrued on such Bonds before the date the
Trust acquired ownership of the Bonds (and the amount of this reduction may
exceed the amount of accrued interest paid to the seller) and, consequently,
such Unitholders may have an increase in taxable gain
<PAGE>
or reduction in capital loss upon the disposition of such Units. Such gain or
loss is measured by comparing the proceeds of such redemption or sale with the
adjusted basis of such Units. In addition, such basis will be increased by both
the Unitholder's aliquot share of the accrued original issue discount (and
market discount, if the Unitholder elects to include market discount in income
as it accrues) with respect to each Bond held by the Trust with respect to which
there was original issue discount at the time the Bond was issued (or which was
purchased with market discount) and reduced by the annual amortization of bond
premium, if any, on Bonds held by the Trust.

    (iv)  If the Trustee disposes of a Trust asset (whether by sale, payment on
maturity, redemption or otherwise) gain or loss is recognized to the Unitholder
and the amount thereof is measured by comparing the Unitholder's aliquot share
of the total proceeds from the transaction with his basis for his fractional
interest in the asset disposed of. Such basis is ascertained by apportioning the
tax basis for his Units among each of the Trust assets (as of the date on which
his Units were acquired) ratably according to their values as of the valuation
date nearest the date on which he purchased such Units. A Unitholder's basis in
his Units and of his fractional interest in each Trust asset must be reduced by
the amount of his aliquot share of accrued interest received by the Trust, if
any, on Bonds delivered after the Unitholders pay for their Units to the extent
that such interest accrued on the Bonds before the Trust acquired ownership of
the Bonds (and the amount of this reduction may exceed the amount of accrued
interest paid to the seller) must be reduced by the annual amortization of bond
premium, if any, on Bonds held by the Trust; and must be increased by the
Unitholder's share of accrued original issue discount (and market discount, if
the Unitholder elects to include market discount in income as it accrues) with
respect to each Bond which, at the time the Bond was issued, had original issue
discount (or which was purchased with market discount).

    (v)  In the case of any Bond held by the Trust where the "stated redemption
price at maturity" exceeds the "issue price," such excess shall be original
issue discount. With respect to each Unitholder, upon the purchase of his Units
subsequent to the original issuance of Bonds held by the Trust Section
1272(a)(7) of the Code provides for a reduction in the accrued "daily portion"
of such original issue discount upon the purchase of a Bond subsequent to the
Bond's original issue, under certain circumstances. In the case of any Bond held
by the Trust the interest on which is excludable from gross income under Section
103 of the Code, any original issue discount which accrues with respect thereto
will be treated as interest which is excludable from gross income under Section
103 of the Code.

    (vi)  In the case of Trusts for which MBIA Insurance Corporation ("MBIA")
insurance with respect to each of the Bonds deposited therein has been obtained
by the Depositor or the issuer or underwriter of the Bonds, we have examined the
form of MBIA's policy or several policies of insurance (the "Policies") which
have been delivered to the Trustee. Assuming issuance of Policies in such form,
in our opinion, any amounts paid under said Policies representing maturing
interest on defaulted Bonds held by the Trustee will be excludable from Federal
gross income if, and to the same extent as, such interest would have been so
excludable if paid in normal course of business by the respective issuer of the
defaulted Bonds, provided that, at the time such policies are purchased, the
amounts paid for such policies are reasonable, customary and consistent with the
reasonable expectation that the issuer of the Bonds, rather than the insurer,
will pay debt service on the Bonds. Paragraph (ii) of this opinion is
accordingly applicable to Policy proceeds representing maturing interest.

    (vii)  Certain bonds in the portfolio of the Trust have been insured by the
issuers, underwriters, the Sponsor or others against default in the prompt
payment of principal and interest (the "Insured Bonds"). Such Insured Bonds are
so designated on the portfolio pages in the Prospectus for each Trust. Insurance
on Insured Bonds is effective so long as such Bonds remain outstanding. For each
of these Insured Bonds, we have been advised that the aggregate principal amount
of such Bonds listed on the portfolio page was acquired by the Trust and are
part of the series of such Insured Bonds in the listed aggregate principal
amount. Based upon the assumption that the Insured Bonds of the Trust are part
of a series covered by an insurance policy, it is our opinion that any amounts
received by the Trust representing maturing interest on such Insured Bonds will
be excludable from Federal gross income if, and to the same extent as, such
interest would have been so excludable if paid in normal course by the Issuer
provided that, at the time such policies are purchased, the amounts paid for
such policies are reasonable, customary and consistent with the reasonable
expectation that the issuer of the Insured Bonds, rather than the insurer will
pay debt service on the Bonds. Paragraph (ii) of this opinion is accordingly
applicable to such payment representing maturing interest.

    Because the Trusts do not include any "private activity bonds" within the
meaning of Section 57(a)(5) of the Code issued on or after August 8, 1986, none
of the Trust Fund's interest income shall be treated as an item of tax
preference when computing the alternative minimum tax. In the case of
corporations, for taxable years beginning after December 31, 1986, the
alternative minimum tax and the Superfund Tax depend upon the corporation's
alternative minimum taxable income ("AMTI"), which is the corporation's taxable
income with certain adjustments.
<PAGE>
    Pursuant to Section 56(c) of the Code, one of the adjustment items used in
computing AMTI of a corporation (other than an S Corporation, Regulated
Investment Company, Real Estate Investment Trust or REMIC) for tax years
beginning in 1989 is an amount equal to 75% of the excess of such corporation's
"adjusted current earnings" over an amount equal to its AMTI (before such
adjustment item and the alternative tax net operating loss deduction). "Adjusted
current earnings" includes all tax-exempt interest, including interest on all
Bonds in the Trust, and tax-exempt original issue discount.

    Sections 1288 and 1272 of the Code provide a complex set of rules governing
the accrual of original issue discount. These rules provide that original issue
discount accrues either on the basis of a constant compound interest rate or
ratably over the term of the Bond, depending on the date the Bond was issued. In
addition, special rules apply if the purchase price of a Bond exceeds the
original issue price plus the amount of original issue discount which would have
previously accrued based upon its issue price (its "adjusted issue price"). The
application of these rules will also vary depending on the value of the bond on
the date a Unitholder acquires his Units, and the price the Unitholder pays for
his Units.

    Effective for tax returns filed after December 31, 1987, all taxpayers are
required to disclose to the Internal Revenue Service the amount of tax-exempt
interest earned during the year.

    Section 265 of the Code provides for a reduction in each taxable year of
100% of the otherwise deductible interest on indebtedness incurred or continued
by financial institutions, to which either Section 585 or Section 593 of the
Code applies, to purchase or carry obligations acquired after August 7, 1986
(with certain exceptions), the interest on which is exempt from Federal income
taxes for such taxable year. Under rules prescribed by Section 265, the amount
of interest otherwise deductible by such financial institutions in any taxable
year which is deemed to be attributable to tax-exempt obligations acquired after
August 7, 1986, will generally be the amount that bears the same ratio to the
interest deduction otherwise allowable (determined without regard to Section
265) to the taxpayer for the taxable year as the taxpayer's average adjusted
basis (within the meaning of Section 1016) of tax-exempt obligations acquired
after August 7, 1986, bears to such average adjusted basis for all assets of the
taxpayer.

    We also call attention to the fact that, under Section 265 of the Code,
interest on indebtedness incurred or continued to purchase or carry Units is not
deductible for Federal income tax purposes. Under rules used by the Internal
Revenue Service for determining when borrowed funds are considered used for the
purpose of purchasing or carrying particular assets, the purchase of Units may
be considered to have been made with borrowed funds even though the borrowed
funds are not directly traceable to the purchase of Units. However, these rules
generally do not apply to interest paid on indebtedness incurred for
expenditures of a personal nature such as a mortgage incurred to purchase or
improve a personal residence.

    "The Revenue Reconciliation Act of 1993" (the "Tax Act") subjects tax-exempt
bonds to the market discount rules of the Code effective for bonds purchased
after April 30, 1993. In general, market discount is the amount (if any) by
which the stated redemption price at maturity exceeds an investor's purchase
price (except to the extent that such difference, if any, is attributable to
original issue discount not yet accrued) subject to a statutory de minimis rule.
Market discount can arise based on the price a Trust pays for Bonds or the price
a Unitholder pays for his or her Units. Under the Tax Act, accretion of market
discount is taxable as ordinary income; under prior law, the accretion had been
treated as capital gain. Market discount that accretes while a Trust holds a
Bond would be recognized as ordinary income by the Unitholders when principal
payments are received on the Bond, upon sale or at redemption (including early
redemption), or upon the sale or redemption of his or her Units, unless a
Unitholder elects to include market discount in taxable income as it accrues.

    We have not examined any of the Bonds to be deposited and held in the Trust
or the proceedings for the issuance thereof or the opinions of bond counsel with
respect thereto, and therefore express no opinion as to the exemption from State
income taxes of interest on the Bonds if received directly by a Unitholder.


    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 333-81001) relating to the Units referred to
above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.


Respectfully submitted,

CHAPMAN AND CUTLER

<PAGE>
EXHIBIT 3.3

(ON CHAPMAN & CUTLER LETTERHEAD)


JUNE 29, 1999



Nuveen Tax-Free Unit Trust,
Series 1093
c/o John Nuveen & Co. Incorporated
333 West Wacker Drive
Chicago, Illinois 60606



The Chase Manhattan Bank
as Trustee for Nuveen Tax-Free Unit
Trust, Series 1093
Nuveen Administration Department
4 New York Plaza - 3rd Floor
New York, New York 10004-2413


Re:--Georgia Insured Trust 65
Gentlemen:


    We have acted as counsel to Nuveen Tax-Free Unit Trust, Series 1093, with
respect to certain matters preliminary to the issuance and sale of units of
interest therein (the "Units") pursuant to a Trust Indenture and Agreement,
dated as of the date hereof (the "Indenture"), between John Nuveen & Co.
Incorporated, as depositor (the "Depositor"), and The Chase Manhattan Bank, as
trustee (the "Trustee"). The Units represent fractional undivided interests in
the principal of and net income on obligations deposited in one of several
separate trusts including the above-captioned trust (the "Trust"), will be
evidenced by a certificate (the "Certificate") and will be sold to various
investors (the "Unitholders"). Each separate trust will be administered as a
distinct entity with separate certificates, investments, expenses, books and
records.


    The assets of the Trust will consist of interest-bearing obligations issued
by or on behalf of the State of Georgia (the "State") or counties,
municipalities, authorities or political subdivisions thereof (the "Georgia
Bonds") and certain bonds issued by Puerto Rico authorities (the "Possession
Bonds" and collectively with the Georgia Bonds, the "Bonds"). Distributions of
interest on the Bonds received by the Trust will be made semi-annually unless a
Unitholder elects to receive them monthly or quarterly.

    Neither the Sponsor nor its counsel have independently examined the Bonds to
be deposited in and held in the Trust. However, although no opinion is expressed
herein regarding such matters, it is assumed that: (i) the Bonds were validly
issued, (ii) the interest thereon is excludable from gross income for federal
income tax purposes and (iii) interest on the Bonds, if received directly by a
Unitholder would be exempt from the Georgia income tax (the "GEORGIA INCOME
TAX"). We have assumed that,t the respective times of issuance of the Bonds,
opinions relating to the validity thereof and to the exemption of interest
thereon from Federal income tax were rendered by bond counsel to the respective
issuing authorities. In addition, we have assumed that, with respect to the
Georgia Bonds, bond counsel to the issuing authorities rendered opinions that
interest on the Georgia Bonds is exempt from the Georgia Income Tax and, with
respect to the Possession Bonds, bond counsel to the issuing authorities
rendered opinions that the Possession Bonds and the interest thereon is exempt
from all state and local income taxation of the Possession Bonds and the
interest thereon. Neither the Sponsor nor its counsel has made any review for
the Trust of the proceedings relating to the issuance of the Bonds or of the
bases for the opinions rendered in connection therewith.

    Based on the foregoing, and review and consideration of existing State laws,
it is our opinion, and we herewith advise you, as follows:

    1.--For purposes of income taxation by the State of Georgia or any of its
counties or municipalities:

    (a)--The Trust is not an association taxable as a corporation and each
Unitholder of the Trust will be treated as the owner of a pro-rata portion of
the Trust, and the income of the Trust will therefore be treated as the income
of the Unitholders;

    (b)--Interest on the Georgia Bonds which is excludable from gross income for
federal income tax purposes when received by the Trust will be exempt from
Georgia income taxation and therefore will not
<PAGE>
be includable in the income of the Unitholders for income tax purposes when
distributed by the Trust and received by the Unitholders;

    (c)--Interest on the Possession Bonds which is excludable from gross income
for federal income tax purposes and is exempt from state and local taxation
pursuant to federal law when received by the Trust will be exempt from Georgia
income taxation, and therefore will not be includible in the income of the
Unitholder for income tax purposes when distributed by the Trust and received by
the Unitholders.

    (d)--Each Unitholder of the Trust will recognize gain or loss for income tax
purposes if the Trustee disposes of a Bond (whether by sale, exchange, payment
on maturity, retirement or otherwise) or if the Unitholder redeems or sells
Units of the Trust to the extent that such transaction results in a recognized
gain or loss for federal income tax purposes;

    (e)--Due to the amortization of bond premium and the basis adjustments
required by the Internal Revenue Code, a Unitholder, under some circumstances,
may realize taxable gain when his or her Units are sold or redeemed prior to the
maturity of Bonds held by the Trust for an amount less than or equal to such
Units' original cost;

    (f)--In the case of Bonds issued before March 11, 1987 with original issue
discount, the amount of gain or loss recognized for income tax purposes upon
such sale or redemption of the Bonds or Units may differ from the amount
recognized for federal income tax purposes because original issue discount on
such Bonds may accrue on ratable basis under Georgia law; and

    (g)--Interest on indebtedness incurred by a Unitholder to purchase or carry
Units of the Trust and Trustee fees and related expenses incurred by the Trust
which are not deductible for federal income tax purposes are also not deductible
under Georgia law;

    2.--Units of the Trust are not subject to sales or use taxation by the State
of Georgia or any political subdivision thereof;

    3.--Bonds are not subject to sales or use taxation by the State of Georgia
or any political subdivision thereof;

    4.--In the case of Trusts for which an insurance policy or policies with
respect to the payment of principal and interest on the Bonds has been obtained
by the Depositor, any proceeds paid under such policy or policies issued to the
Trust, if any, with respect to the Bonds in the Trust which represent maturing
interest on defaulted obligations held by the Trustee will be exempt from State
income taxes if, and to the same extent as, such interest would have been so
exempt if paid by the issurer of the defaulted obligations provided that, at the
time such policies are purchased, the amounts paid for such policies are
reasonable, customary and consistent with the reasonable expectation that the
issuer of the Bonds, rather than the insurer, will pay debt service on the
Bonds. Paragraphs 1(b) and 1(c) of this opinion is accordingly applicable to
policy proceeds representing maturing interest.

    We have not examined any of the Bonds to be deposited and held in the Trust
or the proceedings for the issuance thereof or the opinions of bond counsel with
respect thereto, and therefore express no opinion as to the exemption from State
income taxes of interest on the Bonds if received directly by a Unitholder.


    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (No. 333-81001) filed pursuant to the Securities Act of
1933, as amended (the "Act"), with respect to the registration of the sale of
the Units by Nuveen Tax-Free Unit Trust, Series 1093, and to the references to
our firm in such Registration Statement and the preliminary prospectus included
therein. In giving such consent, we do not thereby admit that we are persons
whose consent is required by Section 7 of the Act, or the rules and regulations
thereunder.


Very truly yours,

Chapman & Cutler

<PAGE>
EXHIBIT 3.3

(ON DECHERT PRICE & RHOADS LETTERHEAD)


JUNE 29, 1999


John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois 60606


RE:  Nuveen Tax-Free Unit Trust, Series 1093
    Pennsylvania Insured Trust 252


Gentlemen:


    You have requested our opinion as to the Pennsylvania tax aspects of the
above-captioned Trust(s) (the "Pennsylvania Trust(s)") which is (are) a part of
the Nuveen Tax-Free Unit Trust Series 1093 ("Fund"). The Fund is organized under
the Trust Indenture and Agreement, of even date, between John Nuveen & Co.
Incorporated, as Depositor, and The Chase Manhattan Bank, as Trustee. The Fund
will contain several trusts, including the Pennsylvania Trust(s), which will
issue Units of fractional undivided interests. The Units will be purchased by
various investors ("Unit Holder"). Each Unit of the Pennsylvania Trust(s)
represents a fractional undivided interest in the principal and net income of
such Trust(s) in the ratio of ten Units for each $1,000 of value of the
obligations initially acquired by such Trust(s). Each Pennsylvania Trust will be
administered as a distinct entity with separate certificates, investments,
expenses, books and records.


    The proceeds of the sale of the Units will be invested primarily in
interest-bearing obligations issued by or on behalf of the Commonwealth of
Pennsylvania, its agencies and instrumentalities, or political subdivisions
thereof, including any county, city, borough, town, township, school disrict,
municipality, and local housing or parking authority in the Commonwealth of
Pennsylvania or issued by Puerto Rico, the Virgin Islands, Guam or the Northern
Mariana Islands ("Bonds"). Distributions of the interest received by the Trust
will be made semi-annually unless the Unit Holder elects otherwise. In the
opinion of bond counsel to each issuer, the interest on all bonds in the Trust
is exempt fromn federal income tax under existing law.

    You have advised us that for federal income tax purposes each Pennsylvania
Trust will not be taxable as an association but will be governed by the
provisions of Subchapter J (relating to Trusts) of Chapter 1 of the Internal
Revenue Code of 1986. Each Unit Holder will be considered the owner of a pro
rata portion of the Unit Holder's respective Pennsylvania Trust and will be
subject to tax on the income therefrom under the provisions of Subpart E of
Subchapter J of Chapter 1 of the Internal Revenue Code of 1986. A Pennsylvania
Trust itself will not be subject to federal income taxes. For federal income tax
purposes, each item of trust income will have the same character in the hands of
a Unit Holder as it would have in the hands of the Trustee. Accordingly, to the
extent that the income of a Pennsylvania Trust consists of interest excludable
from gross income under Section 103 of the Internal Revenue Code of 1986, such
income will be excludable from federal gross income of the Unit Holder.

    Based upon the above facts, it is our opinion that for Pennsylvania state
and local tax purposes, a Pennsylvania Trust will be recognized as a trust not
taxable as a corporation. It will, therefore, not be subject to the Pennsylvania
Capital Stock/Franchise Tax or the Pennsylvania Corporate Net Income Tax. Since
all of the income of a Trust is either itself income exempt from Pennsylvania
Personal Income Tax, as described below, or is required by the terms of the
Trust to be distributed to the holders of Units, a Trust should not be subject
to Pennsylvania Personal Income Tax. The Philadelphia School District Investment
Income Tax described below, is not imposed on trusts.

    Various personal property taxes are in effect in Pennsylvania, however, each
of them exempts, inter alia, Bonds, cash, checking and savings accounts in and
certificates of deposit issued by commercial banks, savings institutions or
trust companies and United States Treasury obligations. In general, these taxes
apply to a specified list of items of intangible personal property including,
inter alia, mortgages and other evidences of indebtedness and shares of stock
issued by business corporations not doing business in Pennsylvania. The taxes
referred to above include the County Personal Property Tax imposed on residents
of Pennsylvania by the Act of June 17, 1913, P.L. 507, as amended, the
additional personal property taxes imposed on Pittsburgh residents by the School
District of Pittsburgh under the Act of June 20, 1947, P.L. 733, as amended, and
by the City of Pittsburgh by Ordinance No. 599 of December 28, 1967, under the
Act
<PAGE>
of December 31, 1965, P.L. 1257, and any additional personal property taxes that
the School District of Philadelphia may reimpose on Philadelphia residents under
the authority contained in the Act of May 23, 1949, P.L. 1676, as amended. Units
evidencing fractional undivided interests in a Pennsylvania Trust will not be
subject to any of these personal property taxes to the extent of that proportion
of a Pennsylvania Trust represented by Bonds and other exempt assets. Only that
proportion of the Units represented by taxable assets will be subject to the
personal property taxes. Pennsylvania Trust Units may be taxable under the
Pennsylvania inheritance and estate taxes.

    The interest and gain from obligations issued by the Commonwealth of
Pennsylvania or by its political subdivisions or by any public authority of
either are exempt from tax under the Act of August 31, 1971, P.L. 395, Act No.
94. However, that Act was repealed by the Act of December 3, 1993, P.L. 473, Act
No. 68 ("Act 68 of 1993") with respect to obligations issued on or after
February 1, 1994. Pursuant to Act 68 of 1993, profits, gains or income derived
from the sale, exchange or other disposition of exempt government obligations
issued after February 1, 1994 will be subject to state or local taxation
although interest and "income" derived from the exempt obligations will continue
to be exempt from all state and local taxation. Therefore, the proportion of
income representing interest from Bonds distributable to Unit Holders is not
taxable under the Pennsylvania Personal Income Tax imposed by Article III of the
Pennsylvania "Tax Reform Code of 1971", as amended by the Act of August 31,
1971, P.L. 362, Act No. 93, or under the Corporate Net Income Tax imposed on
corporations by Article IV of the Tax Reform Code. Similarly, such interest will
not be taxable under the Philadelphia School District Investment Income Tax
imposed on Philadelphia resident individuals under the authority of the Act of
August 9, 1963, P.L. 640, as implemented by Section 19-1804 of the Philadelphia
Code, as amended, and resolutions of the Board of Education of the School
District of Philadelphia made pursuant to the ordinances, and such interest will
not be subject to any of the taxes on net income from business activities in
Philadelphia under Philadelphia Code Sections 19-1500 and 19-2600, imposing a
Net Profits Tax and a Business Privilege Tax respectively. The City and School
District of Pittsburgh do not impose any taxes on unearned income.

    Under the Pennsylvania Personal Income Tax Law, personal income tax is
imposed upon the following specified classes of income: (1) compensation for
services, (2) net profits from the operation of a business, profession, or other
activity, (3) net gains or income from the disposition of property, (4) net
gains or income in the form of rents and royalties, (5) dividends, (6) interest
from obligations not otherwise exempt, (7) gambling and lottery winnings, (8)
net gains or income from estates or trusts which fall under any of the preceding
classifications. Although there is no published authority on the question, it is
our opinion that any insurance proceeds paid in lieu of interest on defaulted
tax-exempt obligations will be exempt from Pennsylvania Personal Income Tax
either as payment in lieu of tax-exempt interest or as payments of insurance
proceeds which are not included in any of the classes of income specified as
taxable under the Pennsylvania Personal Income Tax Law. Since Pennsylvania
Corporate Net Income Tax is imposed upon the corporation's net income for
federal income tax purposes, because such insurance proceeds will be excluded
from the federal income tax base, such proceeds will not be subject to the
Pennsylvania Corporate Net Income Tax. Finally, since proceeds from insurance
policies are expressly excluded from the Philadelphia School District Investment
Income Tax, insurance proceeds paid to replace defaulted payments under any
Bonds held by the Pennsylvania Trust(s) will not be subject to this tax.

    Under Act 68 of 1993, a Unit Holder's share of gain upon disposition of a
Bond issued on or after February 1, 1994 by the Pennsylvania Trust, whether by
sale, exchange, redemption or payment at maturity, will be taxable under the
Pennsylvania Personal Income Tax. Gains on the disposition of Bonds issued
before February 1, 1994 will continue to be exempt. See 72 P.S. Section
7303(a)(3) and 61 Pa. Code Section. 121.9(b)(3). While there is no published
authority with respect to the treatment of such gains for purposes of the
Philadelphia School District Investment Income Tax, it is our opinion that gains
upon dispositions of Bonds issued before February 1, 1994 are exempt from this
tax under Act of August 31, 1971, P.L. 395, Act No. 94, and, if the question
were litigated, the Pennsylvania courts should so hold. Gains on the disposition
of Bonds issued on or after February 1, 1994 will be taxable. In any event, the
Philadelphia School District Investment Income Tax has no application to any
gain on the disposition of property held for more than six months.

    In C.C. Collings & Co., Inc. v. Commonwealth of Pennsylvania, 514 A.2d 1373
(1986), and two related cases, the Supreme Court of Pennsylvania held that gains
or losses from the sale of obligations of the Commonwealth of Pennsylvania, its
political subdivisions, instrumentalities and agencies are not subject to
<PAGE>
the Corporate Net Income Tax. Profits, gains or income derived from the sale,
exchange or other disposition of those exempt obligations issued on or after
February 1, 1994, however, will be subject to tax pursuant to Act 68 of 1993.

    There is no published authority under any of the Pennsylvania state and
local income taxes described above with respect to gain from the redemption or
sale of a Unit. To the extent that such gain represents the Unit Holder's share
of any unrealized gain on the Bonds issued before February 1, 1994 and held by
the Trust, it is our opinion that such gain is exempt from the above-described
Pennsylvania state and local income taxes and, if the question were litigated,
the Pennsylvania courts should so hold. To the extent that such gain is
attributable to unrealized gain on Bonds issued on or after February 1, 1994,
such gain will be taxable under such taxes. In any event, the Philadelphia
School District Investment Income Tax has no application to any gain on the
disposition of property held for more than six months.

    Interest on obligations of Puerto Rico, the Virgin Islands, Guam, or the
Northern Mariana Islands is, under federal law, exempt from taxation by states
and municipalities. Federal law does not expressly exclude from taxation gain
realized upon the disposition of such obligations. Therefore, a disposition of
such obligations by a Pennsylvania Trust could be a taxable event to a Holder
under each of the Pennsylvania state and local income taxes discussed in the
preceding paragraphs. See Willcuts v. Bunn, 282 U.S. 216 (1931); U.S. v.
Stewart, 311 U.S. 60 (1940). Similarly, to the extent that gain on the
redemption or sale of a Unit represents unrealized gain on such obligations held
by a Pennsylvania Trust, such gain could be taxable.


    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (No. 333-81001) relating to the Units referred to above,
and to the reference to our firm as special Pennsylvania tax counsel in said
Registration Statement and in the related Prospectus.


Very truly yours,

DECHERT PRICE & RHOADS

<PAGE>
EXHIBIT 3.4

(ON CARTER, LEDYARD & MILBURN LETTERHEAD)


JUNE 29, 1999



The Chase Manhattan Bank,
as Trustee of
Nuveen Tax-Free Unit Trust,
Series 1093
4 New York Plaza, 3rd Floor
New York, New York 10004


Attention:  Mr. John W. Sweeney
        Vice President


Re:  Nuveen Tax-Free Unit Trust, Series 1093


Dear Sirs:


    We are acting as counsel for The Chase Manhattan Bank ("Chase") in
connection with the execution and delivery of a Standard Terms and Conditions of
Trust for Nuveen Tax-Free Unit Trusts Series 823 and subsequent Series (the
"Standard Terms and Conditions of Trust") dated September 7, 1995, and a related
Trust Indenture and Agreement (the "Trust Indenture and Agreement") dated
today's date (such Standard Terms and Conditions of Trust and related Trust
Indenture and Agreement are collectively referred to as the "Indenture"), each
between John Nuveen & Co. Incorporated, as Depositor (the "Depositor"), and
Chase, as Trustee (the "Trustee"), establishing the Nuveen Tax-Free Unit Trust,
Series 1093 (the "Trust Fund"), and the confirmation by Chase, as Trustee under
the Indenture, that it has caused to be credited to the Depositor's account at
The Depository Trust Company a number of units constituting the entire interest
in the Trust Fund (such aggregate units being herein called "Units") each of
which represents an undivided interest in the Trust Fund, which consists of
tax-exempt bonds (including confirmations of contracts for the purchase of
certain bonds not yet delivered and cash, cash equivalents or an irrevocable
letter of credit in the amount required for such purchase upon the receipt of
such bonds) in the aggregate principal amount set forth in the Closing
Memorandum executed and delivered today by the Depositor and the Trustee (the
"Closing Memorandum"), such bonds being defined in the Indenture as Bonds and
listed in the Schedules to the Indenture.


    We have examined the Indenture, the Closing Memorandum, the form of
certificate for the Units included in the Indenture and a specimen of the
certificates to be issued thereunder (the "Certificates") and such other
documents as we have deemed necessary in order to render this opinion. Based on
the foregoing, we are of the opinion that:

    1. Chase is a duly organized and existing corporation having the powers of a
trust company under the laws of the State of New York.

    2. The Indenture has been duly executed and delivered by Chase and, assuming
due execution and delivery by the Depositor, constitutes the valid and legally
binding obligation of Chase.

    3. The Certificates are in proper form for execution and delivery by Chase,
as Trustee.

    4. Chase, as Trustee, has registered on the registration books of the Trust
Fund the ownership of the Units by The Depository Trust Company, where it has
caused the Units to be credited to the account of the Depositor. Upon receipt of
confirmation of the effectiveness of the registration statement for the sale of
the Units filed with the Securities and Exchange Commission under the Securities
Act of 1933, the Trustee may cause the Units to be transferred on the
registration books of the Trust Fund to such other names, and in such
denominations, as the Depositor may order, and may deliver Certificates
evidencing such ownership.
<PAGE>
    5. Chase, as Trustee, may lawfully advance to the Trust Fund amounts as may
be necessary to provide periodic interest distributions of approximately equal
amounts, and may be reimbursed, without interest, for any such advances from
funds in the interest account, as provided in the Indenture.

    In rendering the foregoing opinion, we have not considered, among other
things, whether the Bonds have been duly authorized and delivered or the federal
tax status of the Bonds.

Very truly yours,

CARTER, LEDYARD & MILBURN

<PAGE>
EXHIBIT 3.5

(ON CARTER, LEDYARD & MILBURN LETTERHEAD)


JUNE 29, 1999



Nuveen Tax-Free Unit Trust,
Series 1093
c/o The Chase Manhattan Bank,
as Trustee
4 New York Plaza, 3rd Floor
New York, New York 10004



Re:  Nuveen Tax-Free Unit Trust, Series 1093


Dear Sirs:


    We are acting as special counsel with respect to New York tax matters for
the Nuveen Tax-Free Unit Trust, Series 1093 (the "Trust Fund"), which will be
established under a Standard Terms and Conditions of Trust for Nuveen Tax-Free
Unit Trust Series 823 and subsequent Series dated September 7, 1995, and a
related Trust Indenture and Agreement dated as of today (such Standard Terms and
Conditions of Trust and related Trust Indenture and Agreement are referred to
collectively as the "Indenture"), between John Nuveen & Co. Incorporated, as
Depositor (the "Depositor"), and The Chase Manhattan Bank, as Trustee (the
"Trustee"). Pursuant to the terms of the Indenture, units of fractional
undivided interest in the Trust Fund will be issued in the aggregate amount set
forth in the Closing Memorandum dated today's date (the "Units"), which Units
may, in accordance with the Indenture, be represented by a certificate or
certificates (the "Certificates").


    We have examined and are familiar with originals or certified copies, or
copies otherwise identified to our satisfaction, of such documents as we have
deemed necessary or appropriate for the purpose of this opinion. In giving this
opinion, we have relied upon the two opinions, each dated today and addressed to
the Trustee, of Chapman and Cutler, counsel for the Depositor, with respect to
the matters of law set forth therein.

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

    1. The Trust Fund will not constitute an association taxable as a
corporation under New York law, and accordingly will not be subject to the New
York State franchise tax or the New York City general corporation tax.

    2. Under the income tax laws of the State and City of New York, the income
of the Trust Fund will be considered the income of the holders of the Units.
Individual holders of Units who are residents of New York State or New York City
should compute their New York adjusted gross income in respect of the Trust Fund
in the same manner as Federal adjusted gross income, increased by interest on
obligations of states and political subdivisions thereof other than New York,
which is exempt for Federal income tax purposes, and reduced by amortization of
premium on such obligations. A New York State or City resident should determine
the basis and holding period of his Units in the same manner for New York
purposes as for Federal purposes for the purpose of computing gain or loss on
the sale or other disposition of his Units. Non-resident holders of Units will
not be taxable by New York State or City on any interest or gain derived from
the Trust Fund or upon any gain from the sale or other disposition of their
Units, since such income or gain will not be considered as derived from New York
State or City sources.

    3. By reason of the exemption contained in paragraph (a) of Subdivision 8 of
Section 270 of the New York Tax Law, no New York State stock transfer tax will
be payable in respect of any transfer of the Certificates.

Very truly yours,

CARTER, LEDYARD & MILBURN

<PAGE>
                                                                     EXHIBIT 4.1
(On J. J. Kenny Co., Inc. Letterhead)


June 29, 1999


John Nuveen & Company
333 West Wacker Drive
Chicago, IL 60606


Re:  Nuveen Tax-Free Unit Trust, Series 1093


Gentlemen:


    We have examined the registration statement File No. 333-81001 for the
above-captioned trust. We hereby acknowledge that Kenny S&P Evaluation Services,
a division of J. J. Kenny Co., Inc. is currently acting as the evaluator for the
trust. We hereby consent to the use in the Registration Statement of the
reference to Kenny S&P Evaluation Services, a division of J. J. Kenny Co., Inc.
as evaluator.


    In addition, we hereby confirm that the ratings indicated in the
Registration Statement for the respective bonds comprising the trust portfolio
are the ratings currently indicated in our KENNYBASE database.

    You are hereby authorized to file a copy of this letter with the Securities
and Exchange Commission.

Sincerely,

Frank A. Ciccotto

<PAGE>
EXHIBIT 4.2

(ON CARTER LEDYARD & MILBURN LETTERHEAD)


June 29, 1999



Nuveen Tax-Free Unit Trust, Series 1093
c/o John Nuveen & Co. Incorporated,
as Depositor of
Nuveen Tax-Free Unit Trust, Series 1093
333 W. Wacker Drive
Chicago, Illinois 60606
RE:  Nuveen Tax-Free Unit Trust, Series 1093


Dear Sirs:


    We hereby consent to the reference to our firm under the caption "What is
the Tax Status of Unitholders?" in the Registration Statement and related
Prospectus of Nuveen Tax-Free Unit Trust, Series 1093 for the registration of
units of fractional undivided interest in the Fund in the aggregate principal
amount as set forth in the Closing Memorandum dated today's date.


Very truly yours,

CARTER, LEDYARD & MILBURN

<PAGE>
EXHIBIT 4.3

CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

    As independent public accountants, we hereby consent to the use of our
report and to all references to our Firm included in or made a part of this
Registration Statement.

ARTHUR ANDERSEN LLP
Chicago, Illinois

June 29, 1999


<PAGE>
MEMORANDUM
                    NUVEEN TAX-FREE UNIT TRUST, SERIES 1093
                               FILE NO. 333-81001

    The Prospectus and the Indenture filed with Amendment No. 1 of the
Registration Statement on Form S-6 have been revised to reflect information
regarding the execution of the Indenture and the deposit of bonds on June 29,
1999, and to set forth certain statistical data based thereon. In addition,
there are a number of other changes from the Prospectus as originally filed to
which reference is made, including the increase in the size of the Fund, a
corresponding increase in the number of Units and a change in the individual
trusts constituting the Fund. All references to the Units, prices and related
statistical data will apply to each trust of the Fund and the Units thereof
individually.

    Except for such updating, an effort has been made to set forth below each of
the changes and also to reflect the same by marking the Prospectus transmitted
with the Amendment. Also, differences between the Final Prospectus relating to
the previous series of the Nuveen Tax-Exempt Unit Trust and the subject
Prospectus have been indicated.
FORM S-6

FACING SHEET. The file number is now shown.

THE PROSPECTUS

    The "Estimated Long-Term Return" and "Estimated Current Return" to
Unitholders under each Trust under each of the distribution plans

    Essential information for each of the Trusts, including applicable footnotes

    The Date of the Deposit
    The size and number of Units of each of the Trusts

    The estimated daily accrual of interest under the plans of distribution for
    each of the Trusts

    Data regarding the composition of the portfolio of each Trust

    Disclosure regarding the states' economic and legislative matters relevant
    to investors of state trusts

    Concentrations of issues by purpose in each Trust

    The approximate percentage of the bonds in the portfolio of each Trust
    acquired in distributions where the Sponsor was either the sole underwriter
    or manager or member of the underwriting syndicate

    The percentage of "when issued" bonds in the portfolio of each Trust

    The schedule of investments for each Trust, including the notes thereto

    Descriptions of the opinions of the special tax counsel for state trusts

    The Record Dates and Distribution Dates for interest distributions for each
    Trust

    The Statements of Condition for each Trust and the Accountant's Report with
    regard thereto.

    The amount of the Trustee's Fee

CHAPMAN AND CUTLER

Chicago, Illinois


June 29, 1999



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