GLENBROOK LIFE DISCOVER VARIABLE ACCCOUNT A
N-4, 1999-10-15
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As filed with the Securities and Exchange Commission on October 15, 1999

                                              Registration No. 811-09623

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

                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC 20549


                                   FORM N-4

            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                         Pre-effective Amendment No. [ ]

                                    and/or

        REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
                               Amendment No. [ ]

                       (Check appropriate box or boxes)


                 GLENBROOK LIFE DISCOVER VARIABLE ACCOUNT (A)
                          (Exact Name of Registrant)

                      GLENBROOK LIFE AND ANNUITY COMPANY
                              (Name of Depositor)

                               3100 Sanders Road
                             Northbrook, IL 60062
        (Address of Depositor's Principal Executive Offices) (Zip Code)

                                  847/402-5000
              (Depositor's Telephone Number, Including Area Code)

                            Michael J. Velotta, Esq.
                       Glenbrook Life and Annuity Company
                               3100 Sanders Road
                           Northbrook, Illinois 60062
                    (Name and Address for Agent For Service

                       Copies of all communications to:
                      Porter Wright Morris & Arthur, LLP
                         1667 K Street, NW, Suite 1100
                           Washington, DC 20006-1605
                         Attn: Patrice M. Pitts, Esq.

The Registrant hereby amends this registration statement on such date or dates
as may be necessary to delay its  effective  date until the  Registrant  shall
file a further  amendment  which  specifically  states that this  registration
statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until the  registration  statement  shall become
effective  on such date as the  Commission,  acting  pursuant to said  Section
8(a), may determine.

<PAGE>

                           DISCOVER VARIABLE ANNUITY
                                  PROSPECTUS
   INDIVIDUAL AND GROUP FLEXIBLE PREMIUM DEFERRED VARIABLE ANNUITY CONTRACTS
                                  offered by
                      GLENBROOK LIFE AND ANNUITY COMPANY
                                    through
                 GLENBROOK LIFE DISCOVER VARIABLE ACCOUNT (A)

      This  prospectus   describes  the  Discover  Variable  Annuity  Contract
("Contract"). The Contract has 20 Investment Alternatives: one standard Fixed
Account  Option  which pays a guaranteed  minimum  rate of  interest;  and 19
Subaccounts  of the Glenbrook  Life Discover  Variable  Account (A) ("Variable
Account").  Purchase  payments are  allocated to the  Investment  Alternatives
according to your instructions. Purchase payments allocated to each Subaccount
of the Variable  Account will be invested  exclusively in one of the following
portfolios ("Funds"):

            MSU FUND
                  Value
                  Equity Growth
                  Mid Cap Value
                  Mid Cap Growth
                  U.S. Real Estate
                  International Magnum
                  Emerging Markets Equity
                  Global Equity
                  Fixed Income
                  High Yield

            VAN KAMPEN FUNDS
                  LIT Comstock
                  LIT Emerging Growth

            JANUS FUNDS
                  Aspen Capital Appreciation

            STRONG FUNDS
                  VIF Growth Fund II
                  Opportunity Fund II

            WARBURG PINCUS FUNDS
                  Small Company
                  Post Venture Capital

            SCUDDER VARIABLE LIFE INVESTMENT FUND
                  International Portfolio
                  VLIF Bond Portfolio


<PAGE>

      VARIABLE ANNUITY  CONTRACTS  INVOLVE CERTAIN RISKS,  INCLUDING  POSSIBLE
      LOSS OF PRINCIPAL.

      *     The  investment   performance  of  the  portfolios  in  which  the
            Subaccounts invest will vary.

      *     We do not guarantee how any of the portfolios will perform.

      *     The Contract is not a deposit or  obligation  of any bank,  and no
            bank endorses or guarantees the Contract.

      *     Neither the U.S.  Government  nor any federal  agency insures your
            investment in the Contract.

      Please read this prospectus carefully before investing,  and keep it for
future  reference.  It  contains  important  information  about  the  Discover
Variable Annuity Contract.

      In certain states,  the Contract may be offered as a group contract with
individual ownership represented by Certificates. Unless the content specifies
otherwise,  the  discussion  of Contracts in this  prospectus  also applies to
Certificates under group contracts.

      THE SEC HAS NOT APPROVED OR DISAPPROVED THESE SECURITIES, OR PASSED UPON
THE  ADEQUACY  OF THE  PROSPECTUS.  ANY  REPRESENTATION  TO THE  CONTRARY IS A
CRIMINAL OFFENSE.

      The Contract is designed to aid you in long-term financial planning.  It
is  available  to  individuals,  as well as to  certain  group and  individual
retirement  plans. You also may purchase the Contract for use as an Individual
Retirement  Annuity or to fund an Individual  Retirement  Account ("IRA") that
qualifies for special federal income tax treatment.

      To learn more about the Contract,  you may want to read the Statement of
Additional  Information ("SAI"),  dated , 1999. For a free copy of the SAI,
contact us at:

      Glenbrook Life and Annuity Company
      Customer Service Center
      8301 Maryland Avenue
      St. Louis, Missouri 63105
      1-877-839-4214

      We have filed the SAI with the SEC and have incorporated it by reference
into this prospectus.  The table of contents for the SAI appears at the end of
this prospectus.

      The SEC maintains an Internet website (http://www.sec.gov) that contains
the SAI, material incorporated by reference,  and other information.  You also
may read and copy any of these documents at the SEC's public reference room in
Washington,  D.C. Please call  1-800-SEC-0330  for further  information on the
operation of the public reference room.

      THIS PROSPECTUS IS VALID ONLY WHEN  ACCOMPANIED BY PROSPECTUSES  FOR THE
FUNDS.


<PAGE>

<TABLE>
<CAPTION>
                               TABLE OF CONTENTS
<S>                                                                             <C>
IMPORTANT TERMS................................................................. 1

FEE TABLE....................................................................... 3

  ANNUAL EXPENSES OF THE FUNDS FOR THE YEAR ENDED 1999.......................... 3
  EXAMPLES...................................................................... 4

HIGHLIGHTS...................................................................... 5

  THE CONTRACT.................................................................. 5
  RIGHT TO CANCEL............................................................... 6
  HOW TO INVEST................................................................. 6
  INVESTMENT ALTERNATIVES....................................................... 6
  TRANSFERS AMONG INVESTMENT ALTERNATIVES....................................... 7
  FEES AND EXPENSES............................................................. 7
  ACCESS TO YOUR MONEY.......................................................... 7
  DEATH BENEFIT................................................................. 8
  ANNUITY PAYMENTS.............................................................. 8
  INQUIRIES..................................................................... 8

CONDENSED FINANCIAL INFORMATION................................................. 8

GLENBROOK LIFE AND ANNUITY COMPANY.............................................. 8

THE VARIABLE ACCOUNT............................................................ 9

THE FUNDS.......................................................................10

  MSUF VALUE....................................................................10
  MSUF EQUITY  GROWTH...........................................................10
  MSUF MID CAP VALUE............................................................10
  MSUF MID CAP GROWTH...........................................................10
  MSUF U.S. REAL ESTATE.........................................................10
  MSUF INTERNATIONAL MAGNUM.....................................................10
  MSUF EMERGING MARKETS EQUITY..................................................10
  MSUF GLOBAL EQUITY............................................................10
  MSUF FIXED INCOME.............................................................10
  MSUF HIGH YIELD...............................................................10
  VAN KAMPEN LIT COMSTOCK.......................................................10
  VAN KAMPEN LIT EMERGING GROWTH................................................10
  JANUS ASPEN CAPITAL APPRECIATION..............................................10
  STRONG VIF GROWTH FUND II.....................................................10
  STRONG OPPORTUNITY FUND II....................................................10
  WARBURG PINCUS SMALL COMPANY..................................................10
  WARBURG PINCUS POST VENTURE CAPITAL...........................................10
  SCUDDER INTERNATIONAL.........................................................10
  SCUDDER VLIF BOND.............................................................10

INVESTMENT ADVISORS.............................................................10

THE FIXED ACCOUNT OPTION........................................................10

FEES AND EXPENSES...............................................................11

  CONTRACT OWNER TRANSACTION EXPENSES...........................................11
  ANNUAL CONTRACT FEE...........................................................11
  DEDUCTIONS FROM THE VARIABLE ACCOUNT..........................................12


                                      i

<PAGE>

    ADMINISTRATIVE EXPENSE CHARGE...............................................12
    MORTALITY AND EXPENSE RISK CHARGE...........................................12
  DEDUCTIONS FOR PREMIUM TAXES..................................................12
  OTHER CHARGES AND DEDUCTIONS..................................................12

PURCHASING THE CONTRACT.........................................................12

  RIGHT TO CANCEL...............................................................13
  CREDITING YOUR FIRST PURCHASE PAYMENTS........................................13
  ALLOCATING YOUR PURCHASE PAYMENTS.............................................13
  ACCUMULATION UNITS............................................................14
  ACCUMULATION UNIT VALUE.......................................................14

TRANSFERS.......................................................................14

  TELEPHONE TRANSFERS...........................................................15
  DOLLAR COST AVERAGING.........................................................15
  AUTOMATIC PORTFOLIO REBALANCING...............................................16

ACCESS TO YOUR MONEY............................................................16

  WITHDRAWALS...................................................................16

ANNUITY INCOME PAYMENTS.........................................................17

  PAYOUT START DATE FOR ANNUITY PAYMENTS........................................17
  VARIABLE INCOME PAYMENTS......................................................17
  FIXED INCOME PAYMENTS.........................................................18
  ANNUITY TRANSFERS.............................................................18
  INCOME PLANS..................................................................18
    INCOME PLAN 1 - LIFE INCOME WITH GUARANTEED PAYMENTS........................18
    INCOME PLAN 2 - JOINT AND SURVIVOR LIFE INCOME WITH GUARANTEED PAYMENTS.....18
    INCOME PLAN 3 - GUARANTEED NUMBER OF PAYMENTS...............................19

DEATH BENEFITS..................................................................19

  DEATH BENEFIT PAYMENT PROVISIONS..............................................19
  DEATH BENEFIT AMOUNT..........................................................20

FEDERAL TAX MATTERS.............................................................20

  INTRODUCTION..................................................................20
  TAXATION OF ANNUITIES.........................................................20
    TAX DEFERRAL................................................................20
    NONNATURAL OWNERS...........................................................21
    DIVERSIFICATION REQUIREMENTS................................................21
    OWNERSHIP TREATMENT.........................................................21
    TAXATION OF PARTIAL AND FULL WITHDRAWALS....................................22
    TAXATION OF ANNUITY PAYMENTS................................................22
    TAXATION OF DEATH BENEFITS..................................................23
    PENALTY TAX ON PREMATURE DISTRIBUTIONS......................................23
    AGGREGATION OF ANNUITY CONTRACTS............................................23
    TAX QUALIFIED CONTRACTS.....................................................23
    RESTRICTIONS UNDER SECTION 403(B) PLANS.....................................24
    INCOME TAX WITHHOLDING......................................................24

GENERAL MATTERS.................................................................24

  OWNER.........................................................................24
  BENEFICIARY...................................................................25
  ASSIGNMENTS...................................................................25
  DELAY OF PAYMENTS.............................................................25
  MODIFICATION..................................................................25


                                      ii

<PAGE>

  CUSTOMER INQUIRIES............................................................26

DISTRIBUTION OF THE CONTRACTS...................................................26

VOTING RIGHTS...................................................................26

GENERAL PROVISIONS..............................................................27

  LEGAL PROCEEDINGS.............................................................27
  FINANCIAL STATEMENTS..........................................................27
  LEGAL MATTERS.................................................................27
  YEAR 2000.....................................................................27

TABLE OF CONTENTS FOR STATEMENT OF ADDITIONAL INFORMATION.......................30
</TABLE>


                                      iii

<PAGE>

                                IMPORTANT TERMS

      For your convenience, we are providing a glossary of the terms we use in
this prospectus.

      ACCUMULATION  PHASE:  The period that begins when we issue your Contract
and ends when you receive  annuity income  payments.  During the  Accumulation
Phase, earnings accumulate on a tax-deferred basis.

      ACCUMULATION UNIT: The measurement we use to calculate the value of each
Subaccount at the end of each Valuation Period.

      ACCUMULATION  UNIT VALUE:  The value of each  Accumulation  Unit that is
calculated on each Valuation Date.  Each  Subaccount has its own  Accumulation
Unit Value. ANNUITANT: The person(s) you identify whose life (lives) we use to
determine  the amount and duration of annuity  income  payments.  You may name
joint annuitants at the time you select an Income Plan.

      BENEFICIARY:  The  person(s)  you select to receive the  benefits of the
Contract if no Owner is living.

      CONTRACT ANNIVERSARY: Each anniversary of the Issue Date.

      CONTRACT  VALUE:  The total value of your  Contract--the  value you have
accumulated under the Contract in the Subaccounts of the Variable Account plus
your value in the Fixed Account Option.

      CONTRACT  YEAR:  A period of 12 months  that starts on the Issue Date of
your Contract or on any 12 month anniversary of that date.

      FIXED  ACCOUNT  OPTION:  The option to which you can  direct  your money
under the  Contract  that  provides  a  guarantee  of  principal  and  minimum
interest. Fixed account assets are a portion of our general account assets.

      FUND: Each of the separate investment portfolios of the underlying funds
in which a Subaccount of the Variable Account invests.

      INCOME  PERIOD:  The period  beginning on the Payout Start Date,  during
which you will receive payments under the Income Plan you choose.

      INCOME PLAN: The plan you choose under which we will pay periodic income
payments to you after the Payout Start Date, based on the money you accumulate
in the  Contract.  You may choose  whether  the dollar  amount of the  annuity
payments you receive will be fixed,  or will vary with the investment  results
of the  Subaccounts  in which  you are  invested  at that  time,  or will be a
combination of fixed and variable payments.


<PAGE>

      INVESTMENT ALTERNATIVES: The Subaccounts of the Variable Account and the
Fixed Account Option.

      ISSUE DATE: The date we issue your Contract.  We measure  Contract Years
and Contract Anniversaries from the Issue Date.

      PAYOUT START DATE:  The date on which we begin to pay you annuity income
payments.

      QUALIFIED  CONTRACTS:  Contracts  issued  under  plans that  qualify for
special federal income tax treatment under Sections  401(a),  403(a),  403(b),
408 and 408A of the Internal Revenue Code.

      SUBACCOUNT:   A  subdivision  of  the  Variable   Account  that  invests
exclusively  in shares of a single Fund.  The  investment  performance of each
Subaccount is linked  directly to the  investment  performance  of the Fund in
which it invests.

      VALUATION   DATE:  Each  day  on  which  we  value  the  assets  in  the
Subaccounts.  We are open for business on each day the New York Stock Exchange
("NYSE") is open for trading.

      VALUATION  PERIOD:  The period between Valuation Dates that begins as of
the close of regular  trading on the NYSE (usually 4:00 p.m.  Eastern Time) on
one  Valuation  Date and ends as of the close of  regular  trading on the next
Valuation Date.

     VARIABLE  ACCOUNT:  Glenbrook Life Discover  Variable Account A, a separate
investment  account  composed of Subaccounts  that we established to receive and
invest purchase payments paid under the Contract.

      WE, US, OUR,  GLENBROOK  LIFE,  THE COMPANY:  Glenbrook Life and Annuity
Company.

      YOU,  YOUR,  THE OWNER:  The person  having the  privileges of ownership
stated in the Contract.


                                      2

<PAGE>

                                   FEE TABLE

      CONTRACT OWNER TRANSACTION EXPENSES
      Sales Load Imposed on Purchases          None
      Deferred Sales Charge                    None
      Surrender Fee                            None
      Transfer Fee                             (1)

      ANNUAL CONTRACT FEE                      None

      VARIABLE ACCOUNT ANNUAL EXPENSES
      (as a percentage of your average net assets in the Variable Account)

      Mortality and Expense Risk Charge(2)            0.50%
      Administrative Expense Charge                   0.10%
                                                      -----
      Total Variable Account Annual Expenses          0.60%

            (1) We do not  impose  a  transfer  charge.  We may in the  future
      assess a $10 charge after the 12th  transfer in a Contract  Year.  We do
      not count  transfers  resulting from dollar cost averaging and automatic
      portfolio rebalancing as transfers.

            (2) If you opt to receive annuity payments that vary in amount, we
      will  assess the  mortality  and expense  risk charge  during the payout
      phase of the Contract.

      ANNUAL EXPENSES OF THE FUNDS FOR THE YEAR ENDED 1999
      (as a percentage of average net assets for the 1999 calendar year)

<TABLE>
<CAPTION>
<S>                            <C>                        <C>                      <C>
   Portfolio                    Management Fee            Other Expenses            Total Expenses
                               After Fee Waiver*                                   After Fee Waiver*
 ---------------------------------------------------------------------------------------------------
MSUF Value
 ---------------------------------------------------------------------------------------------------
MSUF Equity Growth
 ---------------------------------------------------------------------------------------------------
MSUF Mid Cap Value
 ---------------------------------------------------------------------------------------------------
MSUF Mid Cap Growth
 ---------------------------------------------------------------------------------------------------
MSUF U.S. Real Estate
 ---------------------------------------------------------------------------------------------------
MSUF International
Magnum
 ---------------------------------------------------------------------------------------------------
MSUF Emerging
Markets Equity
 ---------------------------------------------------------------------------------------------------
MSUF Global Equity
 ---------------------------------------------------------------------------------------------------
MSUF Fixed Income
 ---------------------------------------------------------------------------------------------------
MSUF High Yield
 ---------------------------------------------------------------------------------------------------
Van Kampen LIT
Comstock
 ---------------------------------------------------------------------------------------------------


                                      3

<PAGE>

 ---------------------------------------------------------------------------------------------------
Van Kampen LIT
Emerging Growth
 ---------------------------------------------------------------------------------------------------
Janus Aspen Capital
Appreciation
 ---------------------------------------------------------------------------------------------------
Strong VIF Growth
Fund II
 ---------------------------------------------------------------------------------------------------
Strong Opportunity
Fund II
 ---------------------------------------------------------------------------------------------------
Warburg Pincus Small
Company
 ---------------------------------------------------------------------------------------------------
Warburg Pincus Post
 ---------------------------------------------------------------------------------------------------
Venture Capital
 ---------------------------------------------------------------------------------------------------
Scudder International
 ---------------------------------------------------------------------------------------------------
Scudder VLIF Bond
 ---------------------------------------------------------------------------------------------------
</TABLE>


      EXAMPLES(1)

      The following examples illustrate the expenses you would pay on a $1,000
investment,  assuming  a 5% annual  return,  if you  continued  the  Contract,
surrendered or annuitized at the end of each period.

         FUND PORTFOLIO                            1 YEAR            3 YEARS

      MSUF Value
      MSUF Equity Growth
      MSUF Mid Cap Value
      MSUF Mid Cap Growth
      MSUF U.S. Real Estate
      MSUF International Magnum
      MSUF Emerging Markets Equity
      MSUF Global Equity
      MSUF Fixed Income
      MSUF High Yield
      Van Kampen LIT Comstock
      Van Kampen LIT Emerging
      Growth
      Janus Aspen Capital
      Appreciation
      Strong VIF Growth Fund II
      Strong Opportunity Fund II
      Warburg Pincus Small
      Company


                                      4

<PAGE>

      Warburg Pincus Post Venture
      Capital
      Scudder International
      Scudder VLIF Bond


      (1)Total Variable Account Annual Expenses of 0.60%

      The Fee Table sets forth the various  costs and  expenses  that you will
pay  directly--that is, current expenses and fees under the Contract-- as well
as the costs and expenses that you will pay  indirectly--that is, the fees and
expenses for each Fund for the 1999 calendar year.  Each Fund has provided the
information on its expenses.

      You should not consider the examples  above to represent  past or future
expenses, performance or return. The assumed 5% return is hypothetical. Actual
expenses and returns may be greater or less than those shown.  Neither the fee
table nor the examples reflects the deduction of any premium taxes.

                                  HIGHLIGHTS

      These  highlights  provide only a brief  overview of the more  important
features of the Contract. More detailed information about the Contract appears
later in this Prospectus. Please read this Prospectus carefully.

      THE CONTRACT

      The Contract provides a way for you to invest on a tax-deferred basis in
a  Fixed  Account  Option  and  in   Subaccounts  of  the  Variable   Account.
"Tax-deferred"  means that the earnings and  appreciation on the money in your
Contract  are not taxed  until  either you take money out by a full or partial
cash  withdrawal or by  annuitizing  the  Contract,  or until we pay the death
benefit.

      The  Contract  is designed  for people  seeking  long-term  tax-deferred
accumulation of assets, generally for retirement.  The tax-deferral feature is
most  attractive to people in high federal and state tax brackets.  You should
not buy this Contract if you are looking for a short-term investment or if you
cannot take the risk of getting back less money than you put in.

      Like all deferred annuity  contracts,  the Contract has two phases:  the
"Accumulation  Phase" and the "Income Period." During the Accumulation  Phase,
you can allocate  money to any  combination  of Investment  Alternatives;  any
earnings are  tax-deferred.  The Income Period begins once you start receiving
regular income payments from your Contract Value. The money you can accumulate
during  the  Accumulation  Phase,  as well as the  annuity  income  option you
choose, will determine the dollar amount of any income payments you receive.

      The Contract is a "variable"  annuity because the value of your Contract
will go up or down depending on the investment  performance of the Subaccounts
in which you invest.  If you select a variable Income Plan, the amount of your
annuity   payments  in  the  variable  plan  will  depend  on  the  investment


                                      5

<PAGE>

performance  of the  Subaccounts  in which  you  invest.  You bear the  entire
investment risk for your investments in the Subaccounts.

      You also may direct  money to the Fixed  Account  Option.  We  guarantee
interest, as well as principal, on money placed in that option.

      RIGHT TO CANCEL

      You may  return  your  Contract  for a refund  within 20 days  after you
receive it. Unless a refund of all purchase payments is required by federal or
state law, the amount of the refund will be the total of all purchase payments
you paid, plus or minus any gains or losses on the amounts you invested in the
Subaccounts.  We  determine  the value of the refund as of the date we receive
the refunded  Contract.  We will pay the refund within 7 days after we receive
the  Contract.  The Contract  will then be deemed void. In some states you may
have more than 20 days,  or  receive a refund of the  amount of your  purchase
payments.

      HOW TO INVEST

      You may purchase a Contract  for $1,000 or more (for both  non-qualified
and Qualified Contracts).  You may make additional payments at any time during
the Accumulation Phase. Send your payments to:

      Glenbrook Life and Annuity Company
      Customer Service Center
      8301 Maryland Avenue
      St. Louis, Missouri 63105
      1-877-839-4214

      INVESTMENT ALTERNATIVES

      You  may  invest  your  money  in  any  of  the   following   Investment
Alternatives  by directing your payments into one or more  Subaccounts or into
the Fixed Account Option.

      Each  Subaccount  invests  exclusively in shares of the following  Funds
managed by the investment  advisor  indicated of the Fund.  Each Fund's assets
are held  separately  and each Fund has  separate  investment  objectives  and
policies. Prospectuses for the Funds more fully describe the portfolios.

      The value of your  investment in the  Subaccounts  will fluctuate  daily
based on the investment  results of the Funds in which you invest,  and on the
fees and charges deducted. You bear investment risk on amounts you invest.

      You also may direct all or a portion of your money to the Fixed  Account
Option and receive a guaranteed  rate of return.  Money you place in the fixed
account will earn  interest for periods  (ranging  from one to ten years) at a
fixed rate that we guarantee will never be less than 3.0%.


                                      6

<PAGE>

      TRANSFERS AMONG INVESTMENT ALTERNATIVES

      You have the flexibility to transfer assets within your Contract. At any
time  during  the  Accumulation  Phase,  you may  transfer  amounts  among the
Subaccounts and between the Fixed Account Option and any Subaccount.

      We do not  assess a charge  for any  transfers.  In the  future,  we may
impose a $10 charge  after the  twelfth  transfer in a Contract  Year.  We may
restrict fixed account transfers.

      FEES AND EXPENSES

      We do not deduct any fees from purchase payments at the time you buy the
Contract.  You invest the full amount of each purchase  payment in one or more
of the Investment Alternatives.

      We deduct two charges daily: a mortality and expense risk charge,  equal
on an annual basis to no more than 0.50% of the money you have invested in the
Subaccounts; and an administrative expense charge, equal on an annual basis to
no more than 0.10% of the money you have invested in the Subaccounts.

      We will deduct state premium  taxes,  which  currently  range from 0% to
3.5%, if you fully withdraw all of your Contract's  value, if we pay out death
benefit proceeds,  or when you begin to receive annuity payments.  We assess a
premium tax fee only in those states that require us to pay premium taxes.

      The Funds  deduct  daily  investment  charges  from the amounts you have
invested  in them.  These  charges  currently  range  from  [0.44%  to  1.72%]
annually,  depending on the Fund. See the Fee Table in this prospectus and the
prospectuses for the Funds.

      ACCESS TO YOUR MONEY

      You may withdraw all or part of your  Contract  Value at any time during
the  Accumulation  Phase. The minimum amount you can withdraw is [$50]. If the
balance  of your  Contract  after a  partial  withdrawal  would  be less  than
[$1,000], we will treat the withdrawal as a full withdrawal.

      We  do  not  deduct  any  withdrawal  or  surrender   charges.   Certain
restrictions  apply to Contracts  issued  under  qualified  plans  governed by
Internal Revenue Code Section 403(b).  You also may have to pay federal income
taxes and a 10%  penalty  tax on any money you take out of the  Contract.  You
should  consult  your own tax  counsel  or other tax  advisors  regarding  any
withdrawals.


                                      7

<PAGE>

      DEATH BENEFIT

      We will pay a death benefit  before the Payout Start Date on any Owner's
death or, if the Owner is not a natural person, on the Annuitant's  death. The
death benefit amount will be the greater of:
      *     The sum of all purchase  payments,  less any prior withdrawals and
            premium taxes; or
      *     The Contract Value on the date we determine the death benefit.

      ANNUITY PAYMENTS

      Under the Contract,  you may receive periodic income payments  beginning
on the Payout Start Date you select. You may choose among several Income Plans
to fit your needs. You may choose to have these annuity payments come from the
Fixed Account,  one or more of the Subaccounts,  or both. The dollar amount of
the income payments may be variable, fixed, or both.

      INQUIRIES

      If you need additional information, please contact us at:

      Glenbrook Life and Annuity Company
      Customer Service Center
      8301 Maryland Avenue
      St. Louis, Missouri  63105
      1-877-839-4214

                        CONDENSED FINANCIAL INFORMATION

      Because the  Subaccounts  available under this Contract did not commence
operation before the date of this prospectus,  financial information about the
Subaccounts is not included in this prospectus or in the SAI

                      GLENBROOK LIFE AND ANNUITY COMPANY

      Glenbrook  Life and Annuity  Company is a stock life  insurance  company
that was organized under the laws of Illinois in 1992 and  redomesticated as a
corporation under the laws of Arizona on December 28, 1998. We were originally
organized  under the laws of Indiana in 1965. From 1965 to 1983, we were known
as "United  Standard Life  Assurance  Company," and from 1983 to 1992, we were
known as  "William  Penn Life  Assurance  Company  of  America."  We issue the
Contract and market the  Contract in those  jurisdictions  in which  Glenbrook
Life is licensed to operate:  Puerto  Rico,  the  District of Columbia and all
states  except  New York.  Our main  administrative  office is located at 3100
Sanders Road, Northbrook, Illinois 60062.

      We are a wholly owned  subsidiary  of Allstate  Life  Insurance  Company
("Allstate Life"), a stock life insurance company  incorporated under the laws
of Illinois.  Allstate Life is a wholly owned subsidiary of Allstate Insurance
Company   ("Allstate"),   a   stock   property-liability   insurance   company


                                      8

<PAGE>

incorporated   under  the  laws  of   Illinois.   The   Allstate   Corporation
("Corporation") owns all of the outstanding capital stock of Allstate.

     We entered into a reinsurance  agreement with Allstate Life, effective June
5, 1992. Under the reinsurance  agreement,  fixed account purchase  payments are
automatically  transferred to Allstate Life and become  invested with the assets
of  Allstate  Life.  Allstate  Life  accepts  100% of the  liability  under such
contracts.  The obligations of Allstate Life under the reinsurance agreement are
to us. We remain the sole obligor under the Contract to the Owners.

                             THE VARIABLE ACCOUNT

     We established the Glenbrook Life Discover Variable Account A as a separate
investment  account on June 15, 1999, under Arizona law. The Variable Account is
registered  with the  Securities  and Exchange  Commission as a unit  investment
trust under the Investment  Company Act of 1940 ("Investment  Company Act"), but
the SEC does not supervise the management or investment practices or policies of
the Variable Account, the Funds, or Glenbrook Life.

      Under  Arizona  law,  the  assets  of  the  Variable  Account  are  held
separately from our other assets.  The assets of the Variable Account equal to
the  reserves  and other  Contract  liabilities  with  respect to the Variable
Account are not chargeable with liabilities  arising out of any other business
Glenbrook  Life may  conduct.  The  income,  gains  and  losses,  realized  or
unrealized,  from assets  allocated to the Variable Account are credited to or
charged against the Variable Account, without regard to other income, gains or
losses of Glenbrook Life. The obligations  under the Contracts are obligations
of Glenbrook Life.

      The Variable Account  receives and invests purchase  payments made under
the Contracts.  We may offer other  variable  annuities for which the Variable
Account may receive and invest payments.

      The  Variable  Account  is divided  into  Subaccounts.  Each  Subaccount
invests  exclusively  in shares  of one of the  Funds.  We may add  additional
Subaccounts in the future, some of which may be available under other variable
annuity contracts.

      A  separate  Subaccount   corresponds  to  each  Fund.  You  decide  the
Subaccounts to which you allocate purchase payments.  Shares of the Funds will
be sold at net asset value to the Variable  Account to fund the Contract.  Any
transaction you make will occur at the next net asset values  determined after
receipt of your transaction request. The Funds must redeem their shares at net
asset value upon our request.

      A Fund's  prospectus  will explain how the net asset value for that Fund
is calculated.


                                      9

<PAGE>

                                   THE FUNDS

      MSUF Value
      MSUF Equity  Growth
      MSUF Mid Cap Value
      MSUF Mid Cap Growth
      MSUF U.S. Real Estate
      MSUF International Magnum
      MSUF Emerging Markets Equity
      MSUF Global Equity
      MSUF Fixed Income
      MSUF High Yield
      Van Kampen LIT Comstock
      Van Kampen LIT Emerging Growth
      Janus Aspen Capital Appreciation
      Strong VIF Growth Fund II
      Strong Opportunity Fund II
      Warburg Pincus Small Company
      Warburg Pincus Post Venture Capital
      Scudder International
      Scudder VLIF Bond

      THERE CAN BE NO ASSURANCE THAT ANY FUND WILL ACHIEVE ITS OBJECTIVE.

      The  prospectus  for  each  Fund  contains  more  complete  information,
including a  description  of the risks  involved in  investing in each Fund. A
COPY OF EACH FUND'S  PROSPECTUS IS INCLUDED WITH THIS  PROSPECTUS.  YOU SHOULD
READ THE FUND PROSPECTUSES CAREFULLY BEFORE YOU INVEST.


                              INVESTMENT ADVISORS


                           THE FIXED ACCOUNT OPTION

      We reserve the right to offer a Fixed Account Option under the Contract.
Money  you  direct to the  Fixed  Account  Option  will  earn  interest  for a
guaranteed  period  of  one to  ten  years--as  we  may,  in  our  discretion,
designate--at  a  declared  interest  rate  in  effect  at the  time  of  your
allocation or transfer.  As each designated  period  expires,  we will, at our
discretion,  declare  a renewal  interest  rate that will not be less than the
3.0%. We may declare more than one interest rate for different monies you have
in the Fixed Account Option based upon the date of your allocation or transfer
into the fixed account.

      You may allocate  all or a portion of your premium  payment to the Fixed
Account Option. You may withdraw or transfer your money from the Fixed Account
Option at any time on a first-in,  first-out basis. If you withdraw money from
the fixed  account,  you will  receive  the  amount you  requested,  minus any
applicable  premium taxes and tax  withholding.  The aggregate  annual expense


                                      10

<PAGE>

charges of 0.60% of your  average  net assets in the  Variable  Account do not
apply to amounts allocated to the Fixed Account Option.

      Purchase  payments you allocate or transfer to the Fixed Account  Option
become  part of our  general  account.  Neither  the  general  account nor any
interest in it is generally subject to the provisions of the Securities Act of
1933 ("Securities  Act") or the Investment  Company Act, and, as a result, the
staff of the SEC has not reviewed the disclosures in this prospectus  relating
to the fixed account. However,  disclosures regarding the fixed account may be
subject to the  provisions  of the  federal  securities  laws  relating to the
accuracy and completeness of statements made in the prospectuses.

      The general  account  includes  all of our assets,  except  those assets
segregated in separate accounts such as the Variable Account.  Unlike Variable
Account  assets,  all  assets  in  the  general  account  are  subject  to the
liabilities of our business operations.  We have the sole discretion to invest
general  account  assets,  subject  to  applicable  law,  and we bear the full
investment risk for all amounts contributed to the general account.

                               FEES AND EXPENSES

      CONTRACT OWNER TRANSACTION EXPENSES

      Because we do not deduct a sales load from your purchase payments,
the full  amount of every  purchase  payment  is  invested  in the  Investment
Alternatives you select.

      We do not  assess  a  deferred  sales  charge  or  surrender  fee if you
withdraw all or part of your Contract  Value at any time before the earlier of
the  Payout  Start  Date or an  Owner's  death  (if the Owner is not a natural
person, the Annuitant's death).

      We  currently do not assess a fee for  transfers  among Funds or between
the fixed  account  and any Fund.  We reserve the right to impose a $10 charge
after the twelfth transfer in a Contract Year, and to restrict  transfers from
the fixed account.  (This excludes transfers through dollar cost averaging and
automatic portfolio rebalancing.)

      ANNUAL CONTRACT FEE

      We do not assess a Contract  maintenance  charge to cover costs such as:
expenses  incurred  in  billing  and  collecting  purchase  payments;  keeping
records;  processing death claims,  cash  withdrawals,  and Contract  changes;
calculating  Accumulation Unit and annuity unit values; and issuing reports to
Owners and regulatory agencies.


                                      11

<PAGE>

      DEDUCTIONS FROM THE VARIABLE ACCOUNT

      ADMINISTRATIVE  EXPENSE CHARGE: We deduct a daily administrative expense
charge that equals, on an annual basis, 0.10% of the daily net assets you have
allocated  to the  Subaccounts.  This  charge  is  designed  to  cover  actual
administrative  expenses. The administrative charge does not necessarily equal
the expenses we incur. We guarantee that this charge will not increase.

      MORTALITY  AND EXPENSE RISK CHARGE:  During the  Accumulation  Phase and
Income  Period of the Contract,  we deduct a daily  mortality and expense risk
charge that equals, on an annual basis, 0.50% of the daily net assets you have
allocated  to the  Subaccounts.  We  guarantee  that the  0.50%  rate will not
increase over the life of the Contract.

      The mortality risk arises from our guarantee to cover all death benefits
and to make income payments in accordance with the Income Plan you select. The
expense  risk  arises from the  possibility  that the  administrative  expense
charge will not be sufficient to cover actual administrative expenses.

      DEDUCTIONS FOR PREMIUM TAXES

      We deduct from Contract  Value  applicable  state premium taxes or other
taxes relevant to the Contract  (collectively  referred to as "premium taxes")
either at the Payout Start Date, when a total  withdrawal  occurs,  or when we
distribute the death benefit.  Current premium tax rates range from 0 to 3.5%.
At the Payout  Start Date,  we will  deduct the charge for premium  taxes from
each  Investment  Alternative  in the  proportion  that  your  value  in  that
Investment  Alternative  bears to your total  Contract  Value.  We reserve the
right to deduct  premium  taxes  from the  purchase  payments  even  where the
premium  taxes are  actually  assessed at the Payout  Start Date or upon total
withdrawal.

      OTHER CHARGES AND DEDUCTIONS

      The Funds deduct fees and expenses from the amounts you have invested in
them. A complete  description of those expenses and deductions may be found in
the prospectuses for each Fund.

                            PURCHASING THE CONTRACT

      You may purchase the Contract with a minimum initial purchase payment of
$1,000,  and may make subsequent  purchase  payments of at least $100 each. We
will issue the Contract if the  Annuitant and Owner are not older than age 90.
We may limit the dollar  amount of  purchase  payments  we will  accept in the
future.


                                      12

<PAGE>

      RIGHT TO CANCEL

      You may return your Contract to us for a refund within 20 days after you
receive it, or a longer  period if  applicable  state law  requires.  Unless a
refund of all  purchase  payments  is  required  by federal or state law,  the
amount of the refund will be the total  purchase  payments  you paid,  plus or
minus any  investment  gains or  losses on the  amounts  you  invested  in the
Subaccounts from the date of the allocation  through the date we determine the
refund.  You will  receive a full refund of the amounts you  allocated  to the
Fixed Account  Options.  However,  if federal or your state law requires us to
refund  premium  payments,  your  refund  will equal the entire  amount of the
premium payments you paid.

      We  determine  the  value of the  refund as of the date we  receive  the
refunded  Contract.  We will pay the refund within 7 days after we receive the
Contract. The Contract will then be deemed void.

      CREDITING YOUR FIRST PURCHASE PAYMENTS

      When we  receive  a  properly  completed  application  with  your  first
payment,  we will credit that payment to the Contract within two business days
of receiving  the payment.  If we receive an incomplete  application,  then we
will credit the payment  within two business  days of receiving  the completed
application.  If, for any reason, we cannot credit the payment to your account
within five business days of receipt of your  application,  we will notify you
of our delay and will  immediately  return  the  payment  to you,  unless  you
specifically  request that we not return the payment.  We reserve the right to
reject any application.

      We will credit all additional  payments to your Contract at the close of
the Valuation Period in which we receive the payment.

      ALLOCATING YOUR PURCHASE PAYMENTS

      On the  application,  you  instruct  us how to  allocate  your  purchase
payment among the Investment Alternatives.  You must allocate your payments to
the  Investment  Alternatives  either in whole  percentages  (from 0% to 100%,
totaling 100%) or in whole dollars  (totaling the entire dollar amount of your
payment). Unless you send us written notice of a change, we will allocate each
additional  payment you make  according to the  instructions  for the previous
purchase payment.  Any change in allocation  instructions will be effective at
the time we receive the notice in good order.

      We reserve  the right to allocate  your  initial  purchase  payment to a
money market fund during the period in which you have the right to return your
Contract for a refund.


                                      13

<PAGE>

      ACCUMULATION UNITS

      Each purchase  payment you allocate to the Subaccounts  will be credited
to the  Contract  as  Accumulation  Units.  The number of  Accumulation  Units
credited is determined by dividing the amount allocated to a Subaccount by the
value of an  Accumulation  Unit of that  Subaccount on the  Valuation  Date on
which the  payment is  received  at or after 4:00 p.m.  Eastern  Time.  If the
purchase  payment is received at or after 4:00 p.m.  Eastern Time, we will use
the Accumulation  Unit Value computed on the next Valuation Date. For example,
if you make a $10,000 purchase payment to the Money Market Subaccount when its
Accumulation  Unit Value equals $10,  then we will credit  1,000  Accumulation
Units for the Money Market Subaccount to your Contract.  The Variable Account,
in turn, will purchase  $10,000 worth of shares of the Money Market  Portfolio
of the Fund.

      ACCUMULATION UNIT VALUE

      Each Subaccount values its Accumulation  Units separately.  The value of
Accumulation  Units will change for each Valuation  Period  depending upon the
investment  performance of the shares of the Fund held by each  Subaccount and
the deduction of certain expenses and charges.

      The value of an  Accumulation  Unit in a  Subaccount  for any  Valuation
Period  equals  the  value  of the  Accumulation  Unit  as of the  immediately
preceding Valuation Period, multiplied by the "Net Investment Factor" for that
Subaccount for the current Valuation Period. The "Net Investment Factor" for a
Valuation Period is a number representing the change, since the last Valuation
Date, in the value of Subaccount  assets per Accumulation  Unit resulting from
investment income, realized or unrealized capital gain or loss, deductions for
taxes,  if any, and  deductions  for the mortality and expense risk charge and
the administrative expense charge.

      YOU SHOULD  EXPECT THE VALUE OF YOUR CONTRACT TO CHANGE DAILY TO REFLECT
THE INVESTMENT  EXPERIENCE OF THE FUNDS IN WHICH YOU ARE INVESTED  THROUGH THE
SUBACCOUNTS,  ANY  INTEREST  EARNED  ON THE  FIXED  ACCOUNT  OPTION,  AND  THE
DEDUCTION OF CERTAIN EXPENSES AND CHARGES.

                                   TRANSFERS

      Before the Payout Start Date, you may transfer your Contract Value among
the  Subaccounts  and between  the Fixed  Account  Option and any  Subaccount.
Transfers from the Fixed Account Option are taken out on a first-in, first-out
basis.  Transfers to or from more than one investment  alternative on the same
day are treated as one transfer.  Transfers  through dollar cost averaging and
automatic portfolio rebalancing do not count as transfers.  We do not assess a
charge for any  transfers  currently,  and  reserve  the right to assess a $10
charge on each transfer after the twelfth transfer in a Contract Year.

      We also  reserve  the right to limit  the  number  of  transfers  in any
Contract Year or to refuse any transfer request for an Owner or certain Owners
if, in our sole discretion, we believe that:

      *     excessive  trading by such Owner or Owners or a specific  transfer
            request  or  group of  transfer  requests  may have a  detrimental
            effect on  Accumulation  Unit  Values  or the share  prices of the
            underlying  mutual funds or would be to the  disadvantage of other
            Owners; or

      *     we are informed by one or more of the underlying mutual funds that
            the purchase or redemption  of shares is to be restricted  because
            of excessive  trading or a specific transfer or group of transfers
            is deemed to have a detrimental effect on share prices of affected
            underlying mutual funds.

Such restrictions may be applied in any manner which is reasonably designed to
prevent any use of the transfer  right which is  considered by us to be to the
disadvantage of the other Owners.

      After the Payout  Start  Date,  transfers  among  Subaccounts  or from a
variable  amount income  payment to a fixed amount income  payment may be made
only once every six  months,  and may not be made  during the first six months
following  the Payout  Start  Date.  Transfers  out of a fixed  amount  income
payment are not permitted after the Payout Start Date.

      TELEPHONE TRANSFERS

      We accept telephone transfer requests at  1-877-839-4214,  if we receive
them by 3:00 p.m. Central Time. We will not accept telephone transfer requests
received at any other telephone number, or after 3:00 p.m. Central Time.

      Telephone  transfer  requests received before 4:00 p.m. Eastern Time are
effected  at the next  computed  Accumulation  Unit Value for the  Subaccounts
involved.  If the NYSE closes  before 3:00 p.m.  Eastern Time, or if it closes
for a period of time,  but then  reopens  for trading on the same day, we will
process  telephone  transfer  requests  at the  close  of  the  NYSE  on  that
particular day.

      We use  procedures  that we believe  provide  reasonable  assurance that
telephone  transfers  are  authorized  by the  proper  persons.  We  may  tape
telephone  conversations with persons who claim to authorize the transfer, and
we may request  identifying  information from such persons.  If we do not take
reasonable  steps to help ensure that  instructions  communicated by telephone
are genuine,  then we may be liable for losses resulting from  unauthorized or
fraudulent instructions.

      DOLLAR COST AVERAGING

      Before the  Payout  Start  Date,  you may make  transfers  automatically
through dollar cost averaging ("DCA"). DCA permits you to transfer a specified
amount  in  equal  monthly  installments  from  one  Subaccount  to any  other
Subaccount.  DCA may not be used to  transfer  amounts  to the fixed  account.
There is no charge for participating in the DCA program.  Nor do DCA transfers
count toward the twelve free transfers allowed during each Contract Year.

      By  transferring  a  set  amount  on  a  regular   schedule  instead  of
transferring the total amount at one time, you reduce the risk of investing in
the underlying portfolio only when the price is high. Participating in the DCA
program does not guarantee a profit,  however, and it does not protect against
a loss if market prices decline.


                                      15

<PAGE>

      AUTOMATIC PORTFOLIO REBALANCING

      Transfers  may  be  made  automatically   through  automatic   portfolio
rebalancing  before the Payout Start Date.  If you elect  automatic  portfolio
rebalancing,  then  we  will  rebalance  all of your  money  allocated  to the
Subaccounts  to your  desired  allocations  on a  quarterly  basis  (or  other
intervals that we may offer).  Each quarter,  money will be transferred  among
Subaccounts to achieve the desired allocation.

      Unless you send us written  notice of a change,  the desired  allocation
will be the allocation you first selected. The new allocation will take effect
with the first  rebalancing  that occurs after we receive the written request.
We are not  responsible  for  rebalancing  that occurs  before we receive your
written request for a new allocation.

      Transfers made though  automatic  portfolio  rebalancing are not counted
toward the twelve free  transfers  permitted per Contract  Year. Any money you
have  allocated  to the Fixed  Account  Options  will not be  included  in the
rebalancing.

                             ACCESS TO YOUR MONEY

      WITHDRAWALS

      You may withdraw all or part of your  Contract  Value at any time before
the Payout Start Date and before the Owner's death (or the  Annuitant's  death
if the Owner is not a natural person).

      The amount you may  withdraw is the full  Contract  Value next  computed
after we receive the request for a withdrawal,  minus any  applicable  federal
withholding or premium taxes.  We do not deduct any withdrawal  charges from a
full or partial withdrawal.

      We will pay withdrawals  from the Variable  Account within seven days of
receiving the request, unless we delay payments for reasons specified below in
"Delay of Payments."

      To complete a partial  withdrawal  from the  Variable  Account,  we will
redeem  Accumulation  Units  in an  amount  equal  to the  withdrawal  and any
applicable premium taxes. You must name the Investment Alternatives from which
you wish to make the  withdrawal.  We will not honor an incomplete  withdrawal
request.

      If any portion of the  withdrawal  is to be taken from the Fixed Account
Option,  then the amount  requested will be deducted on a first-in,  first-out
basis.

      The minimum amount you may withdraw is $50. If your Contract Value after
a partial withdrawal would be less than $1,000, then we will treat the request
as a request  for a full  withdrawal  and we will pay out the entire  Contract
Value,  minus any  charges and premium  taxes.  We may waive these  withdrawal
restrictions.


                                      16

<PAGE>

      You  may  take  partial  withdrawals  automatically  through  systematic
withdrawals  on a monthly,  quarterly,  semi-annual  or annual basis.  You may
request  systematic  withdrawals  of $50 or more at any time before the Payout
Start Date. We may prohibit  systematic  withdrawals  if you also elect dollar
cost averaging.

      If you have a valid  telephone  transfer  request  form on file with us,
then you may make a partial withdrawal by telephone. We calculate the Contract
Value  we will pay you at the  price  next  computed  after  we  receive  your
withdrawal request,  and will pay you the amount you request within seven days
of when we receive  your  request.  Unless  you elect in  writing  not to have
federal income taxes withheld, by law, we must withhold taxes from the taxable
portion of the withdrawal.

      Partial and full  withdrawals may be subject to federal income tax and a
10% tax penalty. This tax and penalty are explained in "Federal Tax Matters."

      After the  Payout  Start  Date,  we will  permit  withdrawals  only when
annuity  payments  are being made from the  Variable  Account  for a specified
number of payments (I.E.,  Income Plan 3). In that case, you may terminate the
Variable Account portion of the income payments at any time and receive a lump
sum equal to the commuted balance of the remaining  variable payments due. The
commuted balance of the remaining variable payments will equal the net present
value of the future  stream of payments,  using a discount  rate of 3% and the
annuity unit value next determined after the receipt of your request.

                            ANNUITY INCOME PAYMENTS

      PAYOUT START DATE FOR ANNUITY PAYMENTS

      The Payout Start Date is the day that we begin paying  annuity  payments
under the  Contract.  You may  change  the  Payout  Start  Date at any time by
sending us written  notice at least 30 days before the scheduled  Payout Start
Date.  The Payout Start Date must be:

      *     at least one month after the Issue Date; and
      *     no later than the day the  Annuitant  reaches  age 90, or the 10th
            anniversary of the Issue Date, if later.

      The dollar  amount of the annuity  payments may be variable,  fixed,  or
both.  The method of  calculating  the first annuity  payment is different for
variable and fixed payments.

      VARIABLE INCOME PAYMENTS

      The dollar amount of variable income payments depends upon:

      *     the investment experience of the Subaccounts you select,
      *     any premium taxes due,
      *     the age and sex of the Annuitant, and
      *     the Income Plan you chose.


                                      17

<PAGE>

      The total  income  payments  we will pay to you may be more or less than
the total of the purchase payments you paid to us because:

      *     variable income payments will vary with the investment  results of
            the Funds, and
      *     Annuitants may live longer than, or not as long as, expected.

      The Income Plan option  selected  will affect the dollar  amount of each
annuity  payment.   Annuity  payments  are  determined  based  on  an  assumed
investment  rate,  the  investment  performance  of the  Funds  in  which  the
Subaccounts you select invest,  and the deduction of certain fees and charges.
If the actual net  investment  experience of the  Subaccounts is less than the
assumed  investment  rate, then the dollar amount of the annuity payments will
decrease. If the net investment experience equals the assumed investment rate,
then the dollar  amount of the annuity  payments  will stay level.  If the net
investment  experience  exceeds the assumed  investment  rate, then the dollar
amount of the annuity  payments will  increase.  The assumed  investment  rate
under the Contract is 3%. For more information on how variable income payments
are determined, see the SAI.

      FIXED INCOME PAYMENTS

      If you choose to have any portion of your annuity payments come from the
fixed account, the payment amount will be fixed for the duration of the Income
Plan and guaranteed by us. We calculate the dollar amount of the fixed income
payment by multiplying  the portion of the Contract Value in the fixed account
on the Payout Start Date (minus any applicable  premium tax) by the value from
the income  payment table in your  Contract,  or, if higher,  the value we are
offering on your Payout Start Date.

      ANNUITY TRANSFERS

      After the Payout  Start Date,  you may not make any  transfers  from the
fixed  account.  You may  transfer  amounts  among  Subaccounts,  or from  the
variable income payment to the fixed income payment  starting six months after
the Payout Start Date. Transfers may be made once every six months thereafter.

      INCOME PLANS

      We offer the  following  Income Plans under the  Contract.  Other Income
Plans may be available upon request.

      INCOME  PLAN 1 - LIFE  INCOME  WITH  GUARANTEED  PAYMENTS:  We will make
payments for as long as the Annuitant  lives. If the Annuitant dies before the
selected  number of guaranteed  payments have been made,  then we will pay the
remainder of the guaranteed payments to the Beneficiary.

      INCOME PLAN 2 - JOINT AND SURVIVOR LIFE INCOME WITH GUARANTEED PAYMENTS:
We will make payments for as long as either the  Annuitant or joint  annuitant
named at the time of Income Plan  selection  lives.  If both the Annuitant and
the joint annuitant die before the selected number of guaranteed payments have
been made,  then we will pay the remainder of the  guaranteed  payments to the
Beneficiary.


                                      18

<PAGE>

      INCOME PLAN 3 - GUARANTEED NUMBER OF PAYMENTS: We will make payments for
a  specified  number of months,  beginning  on the Payout  Start  Date.  These
payments  do not depend on the  Annuitant's  life.  The  guaranteed  number of
months may range from 60 to 360. We will deduct a mortality  and expense  risk
charge from Variable  Account assets  supporting these payments even though we
do not bear any mortality risk.

      The length of any guaranteed payment period and the frequency of annuity
income payments under your selected Income Plan will affect the dollar amounts
of each income payment.  As a general rule, longer guarantee periods result in
lower annuity income payments,  all other things being equal. For example,  if
you  choose  an  Income  Plan  with  payments  that  depend on the life of the
Annuitant,  but with no minimum specified period for guaranteed payments,  the
income payments  generally will be greater than the income payments made under
the same Income Plan with a minimum specified period for guaranteed payments.

      You may  change the Income  Plan until 30 days  before the Payout  Start
Date.  If you chose an Income Plan which  depends on the life of the Annuitant
or joint  annuitant,  then we will require proof of age before we being making
income payments. We will assess applicable premium taxes. If you do not select
an Income Plan,  then we will make income  payments in accordance  with Income
Plan 1- Life Income with Guaranteed Payments for 120 Months.

      We currently use sex-distinct  annuity tables.  However,  if Congress or
the states pass  legislation,  then we reserve the right to use income payment
tables  that do not  distinguish  on the  basis  of  sex.  Special  rules  and
limitations may apply to certain Qualified Contracts.

      If the  Contract  Value to be  applied  to an  Income  Plan is less than
$2,000, or the monthly payments determined under the Income Plan are less than
$20, then we may pay the Contract Value, minus any applicable taxes, in a lump
sum or we may change the  payment  frequency  to an interval  that  results in
income payments of at least $20.

                                DEATH BENEFITS

      DEATH BENEFIT PAYMENT PROVISIONS

      We will pay a death  benefit if the Owner dies  before the Payout  Start
Date or, if the Owner is not a natural  person,  the Annuitant dies before the
Payout Start Date.

      If the new Owner  eligible to receive the death benefit is not a natural
person,  then the new Owner may elect to receive  the death  benefit in one or
more payments.  If the new Owner is a natural  person,  then the new Owner may
elect to receive  the death  benefit in one or more  payments  or in  periodic
payments through an Income Plan.

      The entire  death  benefit must be paid within five years after the date
of death unless the new Owner elects to receive the death  benefit  through an
Income Plan, or a surviving spouse continues the Contract.


                                      19

<PAGE>

      If the new Owner elects to receive the death  benefit  through an Income
Plan,  payments from the Income Plan must begin within one year of the date of
death and must be payable throughout:

      *     the new Owner's life; or
      *     a period not to exceed the new Owner's life expectancy; or
      *     the new Owner's life, with payments guaranteed for a period not to
            exceed the new Owner's life expectancy.

      If the  deceased  Owner's  surviving  spouse is the new Owner,  then the
spouse may elect one of the options  listed above or may continue the Contract
in the  accumulation  phase as if the  death  had not  occurred.  We will only
permit  the  Contract  to be  continued  once.  On the  day  the  Contract  is
continued,  we  will  set  the  Contract  Value  equal  to the  death  benefit
calculated as of the date on which we receive all the  information  we need to
process your  surviving  spouse's  request to continue the Contract after your
death.  Because the death benefit can never be less than the current  Contract
Value, our resetting the Contract Value will never cause the Contract Value to
decrease.

      DEATH BENEFIT AMOUNT

      The   death benefit amount is equal to the greater of:

      *     the sum of all purchase  payments,  less any prior withdrawals and
            premium taxes; or
      *     the Contract Value on the date we determine the death benefit.

      We will  determine  the  value of the  death  benefit  at the end of the
Valuation Period during which we receive a complete request for payment of the
death benefit.  A complete  request  includes  proof of death,  and such other
documentation as we may require.

                              FEDERAL TAX MATTERS

      INTRODUCTION

      THE  FOLLOWING  DISCUSSION IS GENERAL AND IS NOT INTENDED AS TAX ADVICE.
WE  MAKE  NO  GUARANTEE  REGARDING  THE  TAX  TREATMENT  OF  ANY  CONTRACT  OR
TRANSACTION INVOLVING A CONTRACT.

      Federal, state, local and other tax consequences of ownership or receipt
of  distributions   under  an  annuity  contract  depend  on  your  individual
circumstances.  If you are concerned about any tax consequences with regard to
your  individual  circumstances,  then you  should  consult  a  competent  tax
adviser.

      TAXATION OF ANNUITIES

      TAX DEFERRAL

      Generally,  you are not taxed on increases in the Contract Value until a
distribution occurs. This rule applies only where:

      *     the owner is a "natural person,"


                                      20

<PAGE>

      *     the   investments   of  the  Variable   Account  are   "adequately
            diversified" in accordance with Treasury  Department  Regulations,
            and
      *     Glenbrook  Life is  considered  the owner of the Variable  Account
            assets for federal income tax purposes.

      NONNATURAL OWNERS

      As a general rule, annuity contracts owned by nonnatural persons such as
corporations,  trusts,  or other entities are not treated as annuity contracts
for federal  income tax  purposes.  The income on such  contracts  is taxed as
ordinary  income  received or accrued by the owner  during the  taxable  year.
Please see the SAI for a discussion of several  exceptions to the general rule
for contracts owned by nonnatural persons.

      DIVERSIFICATION REQUIREMENTS

      For a  Contract  to be  treated as an  annuity  for  federal  income tax
purposes,  the  investments  in  the  Variable  Account  must  be  "adequately
diversified"  consistent with standards under Treasury Department regulations.
If the investments in the Variable Account are not adequately diversified, the
Contract  will not be treated as an annuity  contract  for federal  income tax
purposes.  As a result,  the income on the Contract  will be taxed as ordinary
income  received  or accrued by the Owner  during the taxable  year.  Although
Glenbrook Life does not control the Funds or their investments,  we expect the
Funds to meet the diversification requirements.

      OWNERSHIP TREATMENT

      The IRS has stated  that you will be  considered  the owner of  Variable
Account assets if you possess incidents of ownership in those assets,  such as
the ability to exercise  investment  control over the assets.  At the time the
diversification  regulations were issued,  the Treasury  Department  announced
that the regulations do not provide guidance concerning circumstances in which
investor control of the Variable Account  investments may cause an investor to
be treated as the owner of the Variable Account.  The Treasury Department also
stated that future  guidance would be issued  regarding the extent that owners
could direct  Subaccount  investments  without  being treated as owners of the
underlying assets of the Variable Account.

      Your rights under this  Contract are different  from those  described by
the IRS in rulings in which it found that  contract  owners were not owners of
separate account assets. For example, you have the choice to allocate premiums
and Contract  Value among more  investment  options.  Also, you may be able to
transfer among investment options more frequently than in such rulings.  These
differences  could  result in your being  treated as the owner of the Variable
Account.  If this  occurs,  income and gain from the Variable  Account  assets
would be  included  in your gross  income.  Glenbrook  Life does not know what
standards  will be set forth in any  regulations or rulings which the Treasury
Department may issue.  It is possible that future  standards  announced by the
Treasury Department could adversely affect the tax treatment of your Contract.
We reserve the right to modify the Contract as necessary to attempt to prevent
you from being  considered the owner of the assets of the Variable Account for
purposes  of  federal  tax  law.  However,  we make  no  guarantee  that  such
modification to the Contract will be successful.


                                      21

<PAGE>

      TAXATION OF PARTIAL AND FULL WITHDRAWALS

      If you make a partial withdrawal under a non-qualified contract, amounts
received are taxable to the extent the contract value, before the deduction of
any applicable surrender charges,  exceeds the investment in the contract. The
investment in the contract is the gross  premiums paid for the Contract  minus
any  amounts  previously  received  from the  Contract  if such  amounts  were
properly  excluded  from your gross income.  If you make a partial  withdrawal
under a qualified  contract,  the  portion of the payment  that bears the same
ratio  to  the  total  payment  as  the  investment  in  the  contract  (I.E.,
nondeductible IRA  contributions,  after tax contributions to qualified plans)
bears to the contract value, is excluded from your income.  If you make a full
withdrawal under a non-qualified  contract or a qualified contract, the amount
received  will be taxable only to the extent it exceeds the  investment in the
contract.

      "Non-qualified  distributions"  from Roth IRAs are  treated as made from
contributions  first and are  included in gross income only to the extent that
distributions exceed contributions.  "Qualified  distributions" from Roth IRAs
are  not  included  in  gross  income.   "Qualified   distributions"  are  any
distributions  made more than five taxable years after the taxable year of the
first contribution to any Roth IRA and which are:

      *     made on or after the date the individual attains age 59 1/2,
      *     made to a Beneficiary after the owner's death,
      *     attributable to the owner being disabled, or
      *     for a first time home  purchase  (first  time home  purchases  are
            subject to a lifetime limit of $10,000).

      If you  transfer a  non-qualified  contract  without  full and  adequate
consideration  to a person  other  than  your  spouse  (or to a former  spouse
incident  to a  divorce),  you  will be taxed on the  difference  between  the
contract  value and the  investment  in the  contract at the time of transfer.
Except for certain Qualified Contracts, any amount you receive as a loan under
a contract, and any assignment or pledge (or agreement to assign or pledge) of
the contract value is treated as a withdrawal of such amount or portion.

      TAXATION OF ANNUITY PAYMENTS

      Generally,  the rule for income  taxation  of payments  received  from a
non-qualified  contract  provides  for the  return of your  investment  in the
contract in equal  tax-free  amounts over the payment  period.  The balance of
each  payment  received is taxable.  For fixed  annuity  payments,  the amount
excluded from income is determined by multiplying  the payment by the ratio of
the  investment  in the contract  (adjusted  for any refund  feature or period
certain) to the total expected  value of annuity  payments for the term of the
contract.  If you elect variable  annuity  payments,  the amount excluded from
taxable income is determined by dividing the investment in the contract by the
total number of expected payments.  The annuity payments will be fully taxable
after the total amount of the  investment  in the  contract is excluded  using
these ratios. If you die and annuity payments cease before the total amount of
the investment in the contract is recovered,  the  unrecovered  amount will be
allowed as a deduction for your last taxable year.


                                      22

<PAGE>

      TAXATION OF DEATH BENEFITS

      Death of an owner, or death of the Annuitant if the contract is owned by
a  non-natural  person,  will cause a  distribution  of death  benefits from a
contract. Generally, such amounts are included in income as follows:

*    if distributed in a lump sum, the amounts are taxed in the same manner as a
     full withdrawal, or

*    if distributed  under an annuity option,  the amounts are taxed in the same
     manner as an annuity payment.

Please see the SAI for more detail on distribution at death requirements.

      PENALTY TAX ON PREMATURE DISTRIBUTIONS

      A 10%  penalty  tax  applies  to the  taxable  amount  of any  premature
distribution from a non-qualified  contract. The penalty tax generally applies
to any distribution  made before the date you attain age 59 1/2.  However,  no
penalty tax is incurred on distributions:

      *     made on or after the date the owner attains age 59 1/2,
      *     made as a result of an owner's death or disability,
      *     made in  substantially  equal  periodic  payments over the owner's
            life or life expectancy,
      *     made under an immediate annuity, or
      *     attributable  to an investment  in the contract  before August 14,
            1982.

      You should  consult a competent  tax advisor to  determine  if any other
exceptions  to the penalty apply to your  situation.  Similar  exceptions  may
apply to distributions from Qualified Contracts.

      AGGREGATION OF ANNUITY CONTRACTS

      All  non-qualified  deferred annuity  contracts issued by Glenbrook Life
(or our  affiliates)  to the same  owner  during  any  calendar  year  will be
aggregated and treated as one annuity contract for purposes of determining the
taxable amount of a distribution.

      TAX QUALIFIED CONTRACTS

      The Contract may be used as an investment with certain  Qualified Plans,
such as:

      *     IRAs under Section 408 of the Code;
      *     Roth IRAs under Section 408A of the Code;
      *     Simplified  Employee  Pension  Plans under  Section  408(k) of the
            Code;
      *     Savings Incentive Match Plans for Employees (SIMPLE) under Section
            408(p) of the Code Tax Sheltered Annuities under Section 403(b) of
            the Code;
      *     Corporate and Self-employed Pension and Profit Sharing Plans;
      *     and  State  and  Local  Government  and  Tax-exempt   Organization
            Deferred Compensation Plans.


                                      23

<PAGE>

      Glenbrook  Life  reserves  the  right to limit the  availability  of the
Contract for use with any of the qualified  plans listed above. In the case of
certain  qualified  plans,  the  terms of the plans  may  govern  the right to
benefits, regardless of the terms of the Contract.

      RESTRICTIONS UNDER SECTION 403(B) PLANS

      Section  403(b)  of the  Internal  Revenue  Code  provides  tax-deferred
retirement  savings plans for employees of certain  non-profit and educational
organizations.  Under Section 403(b), any Contract used for a 403(b) plan must
provide that distributions attributable to salary reduction contributions made
after December 31, 1988, and all earnings on salary  reduction  contributions,
may be made only:

      *     on or after the date the  employee--attains  age 59 1/2, separates
            from service, dies, becomes disabled; or
      *     on   account   of   hardship.   (Earnings   on  salary   reduction
            contributions may not be distributed on account of hardship.)

      These  limitations do not apply to withdrawals  where  Glenbrook Life is
directed  to transfer  some or all of the  Contract  Value to another  Section
403(b) plan.

      INCOME TAX WITHHOLDING

      We are required to withhold  federal  income tax at a rate of 20% on all
"eligible rollover distributions" unless you elect to make a "direct rollover"
of such  amounts to an IRA or  eligible  retirement  plan.  Eligible  rollover
distributions  generally include all distributions  from Qualified  Contracts,
excluding IRAs, with the exception of:

      *     required minimum distributions;
      *     a series of  substantially  equal  periodic  payments  made over a
            period of at least 10 years; or
      *     over  the  life  (or  joint   lives)  of  the   participant   (and
            Beneficiary).

      Glenbrook  Life may be  required to  withhold  federal and state  income
taxes on any distributions from nonqualified Contracts, or Qualified Contracts
that are not  eligible  rollover  distributions,  unless you notify us of your
election not to have taxes withheld.

                                GENERAL MATTERS

      OWNER

      The Owner has the sole right to exercise all rights and privileges under
the Contract,  except as otherwise provided in the Contract. A non-natural and
natural person cannot jointly own the Contract.


                                      24

<PAGE>

      BENEFICIARY

      Subject to the terms of any irrevocable Beneficiary designation, you may
change the  Beneficiary at any time by sending us written  notice.  Any change
will be  effective  at the  time  you  sign  the  notice,  whether  or not the
Annuitant is living when we receive the change.  We will not be liable for any
payment or settlement made before we receive the written notice.

      Unless  otherwise  provided  in  the  Beneficiary   designation,   if  a
Beneficiary   predeceases   the  Owner  and  there  are  no  other   surviving
beneficiaries,  then the new Beneficiary  will be the Owner's  spouse.  If the
Owner's spouse is deceased,  then the Owner's  children (in equal shares).  If
all of the Owner's children are deceased, then the Owner's estate.

      Multiple  beneficiaries may be named.  Unless otherwise  provided in the
Beneficiary designation, if more than one Beneficiary survives the Owner, then
the surviving beneficiaries will share equally in any amounts due.

      ASSIGNMENTS

      We will  not  honor  an  assignment  of an  interest  in a  Contract  as
collateral or security for a loan.  The Owner may assign other  benefits under
the Contract  before the Payout Start Date. No Beneficiary may assign benefits
under the Contract  until they are due. We will not be bound by an  assignment
unless it is signed by the Owner and filed with us. We are not responsible for
assessing  the validity of an  assignment.  Federal law prohibits or restricts
the assignment of benefits under many types of retirement plans, and the terms
of such plans may themselves contain restrictions on assignments.

      DELAY OF PAYMENTS

      Payment of any amounts due from the Variable  Account under the Contract
will be made  within  seven  days,  unless:

      *     the NYSE is closed for other than usual  weekends or holidays,  or
            trading on the NYSE is otherwise restricted;
      *     an emergency exists as defined by the SEC;
      *     or the SEC permits delay for the protection of the Owners.

      Payments or transfers  from the fixed account may be delayed for up to 6
months.

      MODIFICATION

      We cannot modify the Contract without your consent, except:

      *     to make the  Contract  meet  the  requirements  of the  Investment
            Company Act;
      *     to make the  Contract  comply  with any  changes  in the  Internal
            Revenue Code; or
      *     to make any changes  required by the  Internal  Revenue Code or by
            any other applicable law.


                                      25

<PAGE>

      CUSTOMER INQUIRIES

      If  you   would   like   additional   information,   please   contact  a
representative of Glenbrook Life or call us at:

      Glenbrook Life and Annuity Company
      Customer Service Center
      8301 Maryland Avenue
      St. Louis, Missouri 63105
      1-800-242-4402

                         DISTRIBUTION OF THE CONTRACTS

      Allstate Life  Financial  Services,  Inc.  ("ALFS"),  3100 Sanders Road,
Northbrook,  Illinois,  a wholly owned  subsidiary of Allstate Life  Insurance
Company,  acts  as  the  principal  underwriter  of  the  Contracts.  ALFS  is
registered with the SEC as a broker-dealer  under the Securities  Exchange Act
of 1934 and is a member of the National  Association  of  Securities  Dealers,
Inc.  ("NASD").  Glenbrook Life may pay ALFS a commission for  distribution of
the Contracts.


      Contracts  will be  offered  via the  Internet  and sold by  registered
representatives  of  Discover  Brokerage  who are  licensed  insurance  agents
appointed by Glenbrook  Life--either  individually  or through an incorporated
insurance agency.

      We  will  pay  commissions  to  Discover  Brokerage  for  sales  of the
Contract.  Commissions  paid may vary, but we estimate that total  commissions
paid on all Contract sales will not exceed [ %] of all purchase payments. From
time to time,  we may pay or permit  other  promotional  incentives,  in cash,
credit or other compensation. The commission is intended to cover distribution
expenses incurred by Discover Brokerage in selling the Contracts.


                                 VOTING RIGHTS

      The Owner or anyone with a voting  interest in a Subaccount may instruct
us on how to vote at the Fund's shareholder meetings. We will solicit and cast
each vote  according  to the  procedures  set up by the Fund and to the extent
required by law. We reserve the right to vote the  eligible  shares in our own
right,  if  subsequently   permitted  by  the  Investment   Company  Act,  its
regulations or interpretations thereof.

      We will vote Fund shares for which no timely  instructions were received
in proportion to the voting  instructions which we receive with respect to all
Contracts participating in that Subaccount.  We will apply voting instructions
to abstain on a pro-rata basis to reduce the votes eligible to be cast.

      Before the  Payout  Start  Date,  you hold the  voting  interest  in the
Subaccount. We will determine the number of your votes by dividing the portion
of your Contract  Value in the  Subaccount by the net asset value per share of
the applicable portfolio.


                                      26

<PAGE>

      After the Payout  Start  Date,  the  person  receiving  variable  income
payments has the voting  interest,  and the votes decrease as income  payments
are made and the reserves for the Contract  decrease.  That person's number of
votes will be determined  by dividing the reserve for such Contract  allocated
to  the  applicable  Subaccount  by the  net  asset  value  per  share  of the
corresponding eligible portfolio.

                              GENERAL PROVISIONS

      LEGAL PROCEEDINGS

      From time to time we are involved in pending and  threatened  litigation
in the normal course of our business in which claims for monetary  damages are
asserted.   Management,  after  consultation  with  legal  counsel,  does  not
anticipate  the ultimate  liability  arising  from such pending or  threatened
litigation to have a material effect on our financial condition.

      FINANCIAL STATEMENTS

      Our financial  statements  and the financial  statements of the Variable
Account are included in the SAI.

      LEGAL MATTERS

      Porter,  Wright,  Morris & Arthur,  LLP has  provided  advice on certain
legal matters relating to the federal  securities laws applicable to the issue
and sale of the Contracts. Michael J. Velotta, General Counsel of the Company,
has passed upon all  matters of Arizona and  Illinois  law  pertaining  to the
Contracts, including the validity of the Contracts and our right to issue such
Contracts under Arizona insurance law.

      YEAR 2000

      We are heavily dependent upon complex computer systems for all phases of
our  operations,  including  customer  service,  and contract  administration.
Because many of our older computer software  programs  recognize only the last
two digits of the year in any date, some software may fail to operate properly
in or after the year 1999,  if software  is not  reprogrammed,  remediated  or
replaced,  ("Year 2000 Issue"). We believe that many of our counterparties and
suppliers also have Year 2000 Issues that could affect us.

      In 1995,  Allstate  commenced a plan intended to mitigate and/or prevent
the adverse  effects of Year 2000  Issues.  These  strategies  include  normal
development and enhancement of new and existing systems, upgrades to operating
systems  already  covered  by  maintenance  agreements  and  modifications  to
existing  systems  to make them Year 2000  compliant.  The plan also  includes
actively  working  with our major  external  counterparties  and  suppliers to
assess their compliance efforts and our exposure to them.


                                      27

<PAGE>

      Allstate   currently  is   identifying   key  processes  and  developing
contingency  plans in the event that the systems  supporting its key processes
are not  Year  2000  compliant  at the end of  1999.  Until  these  plans  are
complete, management is unable to determine an estimate of the most reasonably
possible worst case scenario  resulting from issues  relating to the Year 2000
Issue.  We  presently  believe  that we will  resolve the Year 2000 Issue in a
timely manner, and the financial impact will not materially affect the results
of our operations,  liquidity or financial  position.  The costs of addressing
Year 2000 Issues are and will be expensed as incurred.


                                      28

<PAGE>

      ORDER FORM

      Please  send  me a copy  of the  most  recent  Statement  of  Additional
Information for the Glenbrook Life Discover Variable Account A.

      Date:___________________________________________________________________

      Name:___________________________________________________________________

      Street Address:_________________________________________________________

      City, State, Zip Code:__________________________________________________


      Send to:  Glenbrook Life and Annuity Company
                Customer Service Center
                8301 Maryland Avenue
                St. Louis, Missouri   63105


                                      29

<PAGE>

                      STATEMENT OF ADDITIONAL INFORMATION

                                    For the

                           DISCOVER VARIABLE ANNUITY

   Individual and Group Flexible Premium Deferred Variable Annuity Contracts

                                Issued Through

                 GLENBROOK LIFE DISCOVER VARIABLE ACCOUNT A

                                  Offered by

                      GLENBROOK LIFE AND ANNUITY COMPANY
                            Customer Service Center
                             8301 Maryland Avenue
                              St. Louis, MO 63105
                                1-877-839-4214
                                  -----------

This  Statement of  Additional  Information  provides  further  discussion  of
subjects  presented  in the  current  prospectus  for  the  Discover  Variable
Annuity, a flexible premium deferred variable annuity (the "Contract") offered
by Glenbrook Life and Annuity Company ("Glenbrook Life," "we," "us"). We are a
wholly owned subsidiary of Allstate Life Insurance Company.

You may obtain a copy of the  prospectus  dated [ ,] 1999,  by  calling  (877)
839-4214 or writing to us at the address listed above.


      THIS STATEMENT OF ADDITIONAL  INFORMATION IS NOT A PROSPECTUS AND SHOULD
BE READ ONLY IN CONJUNCTION WITH THE PROSPECTUS FOR THE CONTRACT.

                                DATED , 1999


<PAGE>

<TABLE>
<CAPTION>
                               TABLE OF CONTENTS
<S>                                                                                             <C>
IMPORTANT TERMS................................................................................. 1

ADDITIONS, DELETIONS OR SUBSTITUTIONS OF INVESTMENTS............................................ 1

REINVESTMENT.................................................................................... 2

THE CONTRACT.................................................................................... 2

  PURCHASE OF CONTRACTS......................................................................... 2

PERFORMANCE DATA................................................................................ 2

CALCULATION OF PERFORMANCE DATA................................................................. 2

OTHER PERFORMANCE DATA.......................................................................... 3

  CUMULATIVE TOTAL RETURNS...................................................................... 3
  ADJUSTED HISTORICAL PORTFOLIO TOTAL RETURNS................................................... 3

TAX-FREE EXCHANGES (1035 EXCHANGES, ROLLOVERS AND TRANSFERS).................................... 4

PREMIUM TAXES................................................................................... 4

TAX RESERVES.................................................................................... 4

INCOME PAYMENTS................................................................................. 5

   CALCULATION OF VARIABLE ANNUITY UNIT VALUES.................................................. 5

GENERAL MATTERS................................................................................. 5

  INCONTESTABILITY.............................................................................. 5
  SETTLEMENTS................................................................................... 5
  SAFEKEEPING OF VARIABLE ACCOUNT ASSETS........................................................ 5
  SAFEKEEPING OF VARIABLE ACCOUNT RECORDS....................................................... 6

FEDERAL TAX MATTERS............................................................................. 6

  INTRODUCTION.................................................................................. 6
  TAXATION OF GLENBROOK LIFE AND ANNUITY COMPANY................................................ 6
  EXCEPTIONS TO THE NONNATURAL OWNER RULE....................................................... 7
  IRS REQUIRED DISTRIBUTION AT DEATH RULES...................................................... 7
  QUALIFIED PLANS............................................................................... 7
  TYPES OF QUALIFIED PLANS...................................................................... 8
    IRAS........................................................................................ 8
    ROTH IRAS................................................................................... 8
    SIMPLIFIED EMPLOYEE PENSION PLANS........................................................... 8
    SAVINGS INCENTIVE MATCH PLANS FOR EMPLOYEES (SIMPLE PLANS).................................. 9
    TAX SHELTERED ANNUITIES..................................................................... 9
    CORPORATE AND SELF-EMPLOYED PENSION AND PROFIT SHARING PLANS................................ 9
    STATE AND LOCAL GOVERNMENT AND TAX-EXEMPT ORGANIZATION DEFERRED COMPENSATION PLANS.......... 9


                                      i

<PAGE>

UNDERWRITERS....................................................................................10

LEGAL MATTERS...................................................................................10

EXPERTS.........................................................................................10

FINANCIAL STATEMENTS............................................................................11
</TABLE>


                                      ii

<PAGE>

                                IMPORTANT TERMS

      The special terms in this SAI are the ones defined in the prospectus and
the following.

      *     ANNUITY UNIT:  The measure used to calculate the amount of annuity
            income payments after the Payout Start Date.
      *     ANNUITY UNIT VALUE:  The monetary  value of each Annuity Unit that
            is calculated on each Valuation  Date. Each Subaccount has its own
            Annuity Unit Value.

             ADDITIONS, DELETIONS OR SUBSTITUTIONS OF INVESTMENTS

      We retain the right,  subject to any  applicable  law, to make additions
to,  deletions  from  or  substitutions  for  the  Fund  shares  held  by  any
Subaccount.  We also reserve the right to  eliminate  the shares of any of the
Funds and to  substitute  shares of  another  Fund,  or of  another  open-end,
registered investment company, if the shares of a Fund are no longer available
for  investment,  or if, in our judgment,  investment in any Fund would become
inappropriate in view of the purposes of the Variable Account.

      Substitutions  of shares in a Subaccount will not be made until you have
been notified of the change, and until the Securities and Exchange  Commission
has  approved  the change,  to the extent such  notification  and approval are
required by the  Investment  Company Act of 1940.  Nothing  contained  in this
Statement of Additional  Information  shall prevent the Variable  Account from
purchasing other securities for other series or classes of contracts,  or from
effecting a conversion  between series or classes of contracts on the basis of
requests made by Owners.

      We also may establish  additional  Subaccounts of the Variable  Account.
Each  additional  Subaccount  would  purchase  shares of a new or an  existing
underlying  fund.  New  Subaccounts  may be  established  when,  in  our  sole
discretion,   marketing  needs  or  investment  conditions  warrant.  Any  new
Subaccounts offered in conjunction with the Contract will be made available to
existing  Owners as determined by Glenbrook Life. We may also eliminate one or
more  Subaccounts  if, in its sole  discretion,  marketing,  tax or investment
conditions so warrant.

      In the event of any such  substitution or change, we may, by appropriate
endorsement,  make  such  changes  in the  Contract  as may  be  necessary  or
appropriate  to reflect such  substitution  or change.  If deemed to be in the
best  interests  of persons  having  voting  rights  under the  policies,  the
Variable Account may be operated as a management  company under the Investment
Company Act or it may be deregistered  under the Investment Company Act in the
event registration is no longer required.


                                      1

<PAGE>

                                 REINVESTMENT

      All  dividends  and  capital  gains  distributions  from the  Funds  are
automatically  reinvested in shares of the distributing  Fund at its net asset
value.

                                 THE CONTRACT

PURCHASE OF CONTRACTS

      We offer the Contracts to the public via the Internet, through Discover
Brokerage and certain of its registered representatives who are licensed under
the federal  securities laws and state insurance laws. We will pay commissions
to Discover Brokerage for sales of the Contract.

                               PERFORMANCE DATA

      From  time to time  the  Variable  Account  may  publish  advertisements
containing performance data relating to its Subaccounts.  The performance data
for the Subaccounts  (other than for a money market Subaccount) will always be
accompanied  by  total  return  quotations.  Performance  figures  used by the
Variable Account are based on actual historical performance of its Subaccounts
for  specific  periods.  The  figures  are  not  estimates  or  guarantees  of
investment performance, and do not necessarily represent the actual experience
of amounts invested by a particular Contract Owner.

      We may disclose  performance data in a standardized format prescribed by
the US Securities  and Exchange  Commission,  and in  nonstandardized  format.
Standardized  performance  data must accompany  disclosure of  nonstandardized
performance data.

      Because the  Subaccounts  available under this Contract did not commence
operation  before the date of the  prospectus  for the  Contract,  there is no
standardized performance data, or non-standardized  presentation of cumulative
total returns, to present at this time.

                        CALCULATION OF PERFORMANCE DATA


      The  average  annual  total  return  of a  subaccount  assumes  that  an
investment  has been  held in the  subaccount  for  certain  periods  of time,
including the period measured from the date the subaccount  began  operations.
We will provide the average annual total return for each  subaccount  that has
been in operation for 1, 5, and 10 years,  or from the date of commencement of
subaccount operations,  if shorter than any of the foregoing time periods. The
total return  quotations will represent the average annual compounded rates of
return that an initial  investment  of $1,000 would earn as of the last day of
the 1, 5 and 10 year periods (or from the date of  commencement  of subaccount
operations, if shorter than any of the foregoing time periods).

      Total returns will be calculated  using  accumulation  unit values which
Glenbrook  calculates on each Valuation  Date based on the  performance of the
subaccount's  corresponding  underlying  Fund, and are reduced by all fees and
charges under the Contract, including the mortality and expense risk charge of
0.50% and an administrative expense charge of 0.10%.

Total return is calculated according to the following formula: TR=(ERV/P)1/N-1


                                      2

<PAGE>

Where:

TR    = The average  annual total return net of subaccount  recurring  charges
        for the Contracts.
ERV   = The  redeemable  value of the  hypothetical  account at the end of the
        period.
P     = A hypothetical single payment of $1,000.
N     = The number of years in the period.

      NEITHER THE YIELD NOR THE TOTAL  RETURN  CALCULATIONS  TAKE INTO ACCOUNT
ANY APPLICABLE PREMIUM TAXES. APPLYING PREMIUM TAXES WILL REDUCE THE YIELD AND
TOTAL RETURN OF A CONTRACT.

                            OTHER PERFORMANCE DATA

CUMULATIVE TOTAL RETURNS

      We may disclose  average annual total return in nonstandard  formats and
cumulative  total  return.  This  means  that the data  may be  presented  for
different time periods and different  dollar  amounts.  The  Cumulative  Total
Returns will be calculated using the following formula:

                         CTR = ([GRAPHIC OMITTED]) - 1

Where:

      *     CTR= The  Cumulative  Total  Return  net of  subaccount  recurring
            charges for the period.
      *     ERV= The ending redeemable value of the hypothetical investment at
            the end of the period.
      *     P= A hypothetical single payment of $1,000.

ADJUSTED HISTORICAL PORTFOLIO TOTAL RETURNS

      We also may present historic  performance data for the Funds since their
inception,   reduced  by  all  fees  and  charges  you  would  pay  under  the
Contract--the mortality and expense risk charge of 0.50% and an administrative
expense charge of 0.10%. Such adjusted historic performance includes data that
precedes the inception dates of the  Subaccounts,  but is designed to show the
performance that would have resulted if the Contract had been available during
that time.


                                       3

<PAGE>

      We may report other  information,  including the effect of  tax-deferred
compounding on a Subaccount's  returns,  through  tables,  graphs,  or charts.
Tax-deferred  compounding  can lead to substantial  long-term  accumulation of
assets, if the investment experience of a Fund is positive.

      Sales literature, advertisements or other reports also may refer to A.M.
Best's rating of Glenbrook Life as an insurance company.  Several  independent
rating  agencies  regularly  evaluate life  insurer's  claims-paying  ability,
quality of investments and overall  stability.  For financial  strength,  A.M.
Best  Company  assigns an [A+r] to us,  and an [A+] to  Allstate  Life,  which
automatically reinsures all of our [net business]. Standard & Poor's Insurance
Rating Services  assigns us a financial  strength rating of AA+ (very strong).
Moody's  assigns us a  financial  strength  rating of Aa2  (Excellent).  These
ratings do not relate to the investment performance of the Variable Account.

         TAX-FREE EXCHANGES (1035 EXCHANGES, ROLLOVERS AND TRANSFERS)

      We accept purchase payments that are the proceeds of an annuity contract
in a transaction  qualifying for a tax-free exchange under Section 1035 of the
Internal  Revenue Code.  Except as required by federal law in calculating  the
basis of the annuity contract,  we do not  differentiate  between Section 1035
purchase payments and non-Section 1035 purchase payments.

      We also accept  "rollovers"  and transfers from contracts  qualifying as
tax-sheltered annuities ("TSAs"),  individual retirement annuities or accounts
("IRAs"),  or any other qualified contract that is eligible to "rollover" into
an IRA. We differentiate among non-qualified  contracts,  TSAs, IRAs and other
Qualified  Contracts to the extent  necessary to comply with federal tax laws.
For example,  we restrict the assignment,  transfer or pledge of TSAs and IRAs
so the contracts  will continue to qualify for special tax  treatment.  If you
are contemplating any such exchange,  rollover or transfer of a contract,  you
should  contact a competent tax adviser with respect to the potential  effects
of such a transaction.

                                 PREMIUM TAXES

      Applicable  premium tax rates depend on your state of residency  and the
insurance  laws and status of Glenbrook  Life in those  states  where  premium
taxes  are  incurred.  Premium  tax  rates  may  be  changed  by  legislation,
administrative interpretations or judicial acts.

                                 TAX RESERVES

      We do not  establish  capital  gains tax reserves for the  Subaccount or
deduct  charges  for tax  reserves  because  we  believe  that  capital  gains
attributable to the Variable Account will not be taxable.  However, we reserve
the right to deduct  charges to establish tax reserves for potential  taxes on
realized or unrealized capital gains.


                                      4

<PAGE>

                                INCOME PAYMENTS

CALCULATION OF VARIABLE ANNUITY UNIT VALUES

      We  calculate  the amount of the first income  payment by applying  your
Contract Value allocated to each Subaccount,  less any applicable  premium tax
charge  deducted at this time, to the income  payment  tables in the Contract.
The first annuity income payment is divided by the  Subaccount's  then current
annuity unit value (the measure used to determine  the number of annuity units
upon which later income  payments  will be based).  Unless  transfers are made
among Subaccounts, each variable income payment after the first will equal the
sum of the  number  of  annuity  units  determined  in this  manner  for  each
Subaccount  times the then  current  annuity  unit  value for each  respective
Subaccount.

      Annuity units in each Subaccount are valued  separately and annuity unit
values will depend upon the investment  experience of the  particular  Fund in
which  the  Subaccount  invests.  The  value  of the  annuity  unit  for  each
Subaccount at the end of any Valuation Period is calculated by:

      *     MULTIPLYING  the annuity unit value at the end of the  immediately
            preceding  Valuation  Period by the  Subaccount's  Net  Investment
            Factor during the period; and then
      *     DIVIDING the product by the sum of 1.0 plus the assumed investment
            rate for the period.  The assumed  investment rate adjusts for the
            interest  rate  assumed  in the  Income  Payment  tables  used  to
            determine the dollar amount of the first  variable  annuity income
            payment,  and is at an effective annual rate which is disclosed in
            the Contract.

      We determine the amount of the first annuity  income  payment paid under
an Income Plan using the interest  rate and mortality  table  disclosed in the
Contract.  Different  annuity tables may be used, as appropriate,  taking into
account judicial or legislative  developments regarding the use of tables that
do not differentiate on the basis of sex.

                                GENERAL MATTERS

INCONTESTABILITY

      We will not contest the Contract after it is issued.

SETTLEMENTS

      Due  proof of the death of the  Owner(s)  (or the  Annuitant's  death if
there is a nonnatural  Owner) must be received  before  settlement  of a death
claim.

SAFEKEEPING OF VARIABLE ACCOUNT ASSETS

      We hold title to the assets of the Variable Account. The assets are kept
physically  segregated,  held  separate  and apart from our general  corporate


                                      5

<PAGE>

assets.  Records  are  maintained  of all  purchases  and  redemptions  of the
portfolio shares held by each of the Subaccounts.

      The Funds do not issue certificates. We hold the Variable Account assets
in open account in lieu of stock certificates. Each Fund prospectus provides a
more detailed description of the custodian of that Fund.

SAFEKEEPING OF VARIABLE ACCOUNT RECORDS

      All accounts,  books,  records and other documents which are required to
be maintained for the Variable Account are maintained by Glenbrook Life.

                              FEDERAL TAX MATTERS

INTRODUCTION

      THE  FOLLOWING  DISCUSSION IS GENERAL AND IS NOT INTENDED AS TAX ADVICE.
GLENBROOK LIFE MAKES NO GUARANTEE  REGARDING THE TAX TREATMENT OF ANY CONTRACT
OR  TRANSACTION  INVOLVING A  CONTRACT.  Federal,  state,  local and other tax
consequences  of  ownership  or  receipt  of  distributions  under an  annuity
contract  depend on the individual  circumstances  of each person.  If you are
concerned  about  any  tax   consequences   with  regard  to  your  individual
circumstances, you should consult a competent tax adviser.

TAXATION OF GLENBROOK LIFE AND ANNUITY COMPANY

      We are taxed as a life insurance company under Part I of Subchapter L of
the Internal Revenue Code. The Variable Account is not an entity separate from
Glenbrook Life; its operations  form a part of Glenbrook  Life.  Consequently,
the  Variable  Account  is not taxed  separately  as a  "Regulated  Investment
Company" under Subchapter M of the Internal Revenue Code.

      Investment income and realized capital gains of the Variable Account are
applied automatically to increase reserves under the Contract.  Glenbrook Life
believes  that,  under existing  federal income tax law, the Variable  Account
investment  income and capital gains will not be taxed to the extent that such
income and gains are  applied to increase  the  reserves  under the  Contract.
Generally,  reserves are amounts that Glenbrook  Life is required,  by law, to
accumulate  and  maintain  in  order  to meet  future  obligations  under  the
Contracts.

      Glenbrook Life does not anticipate that it will incur any federal income
tax liability attributable to the Variable Account. Therefore we do not intend
to make provisions for any such taxes. If we are taxed on investment income or
capital gains of the Variable Account, then we may impose a charge against the
Variable Account in order to make provision for such taxes.


                                      6

<PAGE>

EXCEPTIONS TO THE NONNATURAL OWNER RULE

      Generally,  contracts  held by a  nonnatural  owner are not  treated  as
annuity  contracts  for  federal  income tax  purposes,  unless one of several
exceptions  applies.  Contracts generally will be treated as held by a natural
person if the nominal owner is a trust or other entity that holds the contract
for the benefit of a natural person.  However, this special exception will not
apply in the case of an employer who is the nominal owner of a contract  under
a  non-qualified  deferred  compensation  arrangement  for  employees.   Other
exceptions to the nonnatural owner rule are:

      *     contracts  acquired  by an estate of a  decedent  by reason of the
            death of the decedent;
      *     certain Qualified Contracts;
      *     contracts  purchased by employers upon the  termination of certain
            qualified plans;
      *     certain  contracts used in connection with  structured  settlement
            agreements, and
      *     contracts  purchased  with  a  single  premium  when  the  annuity
            starting date is no later than a year from purchase of the annuity
            and  substantially  equal  periodic  payments  are made,  not less
            frequently than annually, during the annuity period.

IRS REQUIRED DISTRIBUTION AT DEATH RULES

      To qualify as an annuity  contract for federal  income tax  purposes,  a
nonqualifed contract must provide:

      *     if any contract owner dies on or after the annuity start date, but
            before the entire  interest in the contract has been  distributed,
            the  remaining  portion of such interest  must be  distributed  at
            least as rapidly as under the method of distribution being used as
            of the date of that owner's death;
      *     if any  contract  owner dies  before the annuity  start date,  the
            entire  interest in the contract will be  distributed  within five
            years after the date of that owner's death.

      The five year requirement is satisfied if:

      *     any portion of the contract owner's interest which is payable to a
            designated  beneficiary  is  distributed  over  the  life  of such
            beneficiary  (or  over a  period  not  extending  beyond  the life
            expectancy of the beneficiary), and
      *     the  distributions  begin within one year of the contract  owner's
            death.

      If the designated  beneficiary  of the contract is the contract  owner's
surviving  spouse,  the contract may be continued with the surviving spouse as
the new contract  owner.  If the contract  owner is a nonnatural  person,  the
Annuitant  is treated as the  contract  owner for  purposes  of  applying  the
distribution  at death  rules.  In  addition,  a change in the  Annuitant on a
contract  owned by a  nonnatural  person  will be  treated as the death of the
contract owner.

QUALIFIED PLANS

      This  Contract  may be used  with  several  types  of  qualified  plans.
Glenbrook  Life reserves the right to limit the  availability  of the Contract
for use with any of the qualified plans listed below. The tax rules applicable


                                      7

<PAGE>

to participants in such qualified plans vary according to the type of plan and
the terms and conditions of the plan. Qualified plan participants, and owners,
annuitants and beneficiaries  under the Contract,  may be subject to the terms
and conditions of the qualifed plan, regardless of the terms of the Contract.

TYPES OF QUALIFIED PLANS

IRAS

      Section 408 of the Internal Revenue Code permits eligible individuals to
contribute  to an  individual  retirement  program  known as an IRA.  IRAs are
subject to limitations  on the amount that can be contributed  and on the time
when  distributions may commence.  Certain  distributions  from other types of
qualified  plans may be "rolled over" on a tax-deferred  basis into an IRA. An
IRA  generally  may not  provide  life  insurance,  but it may provide a death
benefit  that equals the greater of the premiums  paid or the contract  value.
The contract provides a death benefit that in certain circumstances may exceed
the greater of the purchase  payments or the contract value. If the IRS treats
the death benefit as violating the prohibition on investment in life insurance
contracts, the contract would not qualify as an IRA.

ROTH IRAS

      Section 408A of the Internal Revenue Code permits  eligible  individuals
to make nondeductible  contributions to an individual retirement program known
as a Roth IRA. Roth IRAs are subject to  limitations on the amount that can be
contributed.  In certain instances,  distributions from Roth IRAs are excluded
from gross  income.  Subject  to  certain  limits,  a  traditional  IRA may be
converted or "rolled over" to a Roth IRA. The taxable  portion of a conversion
or rollover distribution is included in gross income, but is exempted from the
10% penalty tax on premature distributions.

SIMPLIFIED EMPLOYEE PENSION PLANS

      Section  408(k)  of  the  Internal  Revenue  Code  allows  employers  to
establish  simplified  employee pension plans for their employees,  if certain
criteria are met.  Under these plans the employer  may,  within  limits,  make
deductible  contributions  on  behalf  of the  employees  to their  individual
retirement  annuities.  Employers  intending to use the Contract in connection
with such plans should seek competent advice.


                                      8

<PAGE>

SAVINGS INCENTIVE MATCH PLANS FOR EMPLOYEES (SIMPLE PLANS)

      Sections 408(p) and 401(k) of the Internal  Revenue Code allow employers
with 100 or fewer  employees to establish  SIMPLE  retirement  plans for their
employees. SIMPLE plans may be structured as a SIMPLE retirement account using
an employee's IRA to hold the assets, or as a Section 401(k) qualified cash or
deferred arrangement.  In general, a SIMPLE plan consists of a salary deferral
program for eligible employees, and matching or nonelective contributions made
by  employers.  Employers  intending to use the Contract in  conjunction  with
SIMPLE plans should seek competent tax and legal advice.

TAX SHELTERED ANNUITIES

      Section  403(b) of the  Internal  Revenue  Code  permits  public  school
systems and certain  types of tax-exempt  organizations  (specified in Section
501(c)(3)  of the  Internal  Revenue  Code) to  purchase  contracts  for their
employees.  Subject to certain  limitations,  a Section 403(b) plan permits an
employer to exclude the purchase  payments from an employee's  gross income. A
contract  used for a Section  403(b)  plan  must  provide  that  distributions
attributable to salary reduction  contributions  made after December 31, 1988,
and all earnings on salary reduction contributions, may be made only:

      *     on or after the date the  employee--attains  age 59 1/2, separates
            from service, dies, becomes disabled; or
      *     on account of hardship.

(Distributions  attributable  to salary  reduction  contributions  made  after
December 31, 1988, may be made; distributions attributable to EARNINGS on such
salary reduction  contributions may not.) These limitations would not apply to
withdrawals  occurring when Glenbrook Life is directed to transfer some or all
of the Contract Value to another 403(b) plan.

CORPORATE AND SELF-EMPLOYED PENSION AND PROFIT SHARING PLANS

      Sections 401(a) and 403(a) of the Internal Revenue Code permit corporate
employers  to  establish  various  types of tax favored  retirement  plans for
employees.  The Internal  Revenue Code permits  self-employed  individuals  to
establish tax favored  retirement  plans for themselves  and their  employees.
Such retirement plans may permit the purchase of contracts to provide benefits
under the plans.

STATE AND LOCAL GOVERNMENT AND TAX-EXEMPT  ORGANIZATION  DEFERRED COMPENSATION
PLANS

      Section 457 of the Internal Revenue Code permits  employees of state and
local  governments  and tax-exempt  organizations  to defer a portion of their
compensation  without paying current taxes. The employees must be participants
in an eligible deferred  compensation plan. Employees with contracts under the
plan are considered general creditors of the employer.  The employer, as owner
of the  contract,  has  the  sole  right  to  the  proceeds  of the  contract.
Generally, under the nonnatural owner rules, such contracts are not treated as
annuity  contracts  for  federal  income  tax  purposes.  Under  these  plans,
contributions made for the benefit of an employee will not be included in that


                                      9

<PAGE>

employee's  gross income until  distributed  from the plan.  However,  all the
compensation  deferred  under a 457 plan must remain the sole  property of the
employer.  As property of the employer,  the assets of the plan are subject to
the claims of the employer's general creditors,  until such time as the assets
are made available to the employee or a beneficiary.

                                 UNDERWRITERS

      The Contracts are distributed through the principal underwriter for the
Variable  Account,   Allstate  Life  Financial  Services,  Inc.  ("ALFS"),  an
affiliate of Glenbrook Life and Annuity Company.  We may pay ALFS a commission
for  distribution  of the  Contracts.  The  underwriting  agreement  with ALFS
provides that we will reimburse ALFS for expenses incurred in distributing the
Contracts,  including any liability to Owners arising out of services rendered
or Contracts issued.

      The offering of the Contracts is  continuous  and we do not  anticipate
discontinuing the offering of the Contracts.  However, we reserve the right to
discontinue the offering of the Contracts.

                                 LEGAL MATTERS

      Porter,  Wright,  Morris & Arthur LLP of  Washington,  D.C. has provided
advice on certain legal matters  relating to the federal  securities laws. All
matters of Arizona and Illinois law pertaining to the Contracts, including the
validity of the Contract and Glenbrook's authority to issue the Contract under
Arizona  Insurance  Law, have been passed upon by Michael J. Velotta,  General
Counsel of Glenbrook Life and Annuity Company.

                                    EXPERTS

     The financial  statements of Glenbrook life and annuity Company included in
this Statement of Additional  Information (which is incorporated by reference in
the  prospectus  of  Glenbrook  Life  Discover  Variable  Annuity  Account  A of
Glenbrook Life and annuity Company) have been audited by Deloitte & Touche, LLP,
180 N. Stetson Avenue,  Chicago,  Illinois 60601-6701,  independent auditors, as
stated in their report appearing  herein,  and are included in reliance upon the
report of such firm given  upon their  authority  as experts in  accounting  and
auditing.

                                      10

<PAGE>

                             FINANCIAL STATEMENTS

      The financial  statements of Glenbrook Life,  which are included in this
Statement of Additional  Information,  should be considered as bearing only on
our  ability to meet our  obligation  under the  Contract.  They should not be
considered as bearing on the investment  performance of the assets held in the
Variable Account.

      Because the  Subaccounts  available under this Contract did not commence
operation  before  the  date of the  prospectus  for the  Contract,  financial
information  about the  Subaccounts  is not included in that  prospectus or in
this SAI.
<PAGE>
                                         PART C
                                    OTHER INFORMATION

ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS.

Financial Statements

All required  financial  statements are included in Part B of this  registration
statement.

Exhibits

(1)  Resolution of the Board of Directors of Glenbrook  Life and Annuity
     Company  authorizing  establishment of the Glenbrook Life Discover Variable
     Account (A).

(2)  Not Applicable.

(3)  Form of Underwriting Agreement. 1/

(4)  Form of Discover Variable Annuity Contract.

(5)  Form of Discover Variable Annuity Contract Application.

(6)  (a)(i) Articles of Incorporation  of Glenbrook Life and Annuity  Company.2/

        (ii) Amended and Restated  Articles of  Incorporation  and Articles of
             Redomestication of Glenbrook Life and Annuity Company.3/

     (b)(i) Bylaws of  Glenbrook  Life and Annuity  Company.2/

        (ii) Amended  and  Restated  Bylaws  of  Glenbrook  Life  and  Annuity
             Company.3/

(7)  Form of Reinsurance  Agreement  between  Glenbrook Life and Annuity Company
     and Allstate Life Insurance Company.4/

(8)  Form of Participation Agreement.5/

(9)  Opinion and Consent of Michael J. Velotta,  Vice  President,  Secretary and
     General Counsel of Glenbrook Life and Annuity Company.5/

(10) (a) Consent of Porter, Wright, Morris and Arthur, LLP.5/
     (b) Consent of Deloitte & Touche, LLP 5/

(11) Not Applicable.

(12) Not Applicable.

(13) Computation of Performance Quotations. 5/

(14) Not Applicable.

(15) Powers of Attorney.

1/  Incorporated  herein  by  reference  to  Depositor's  Form N-4  registration
statement  filed  with  the SEC  via  EDGARLINK  on  July  31,  1998  (File  No.
333-60337).

2/  Incorporated  herein  by  reference  to  depositor's  Form S-1  registration
statement  filed  with  the SEC  via  EDGARLINK  on  June  28,  1996  (File  No.
333-07275).

3/ Incorporated  herein by reference to Depositor's Form 10-K filed with the SEC
via EDGARLINK on March 31, 1999.

4/ Incorporated herein by reference to depositor's pre-effective amendment No. 1
to Form N-4 registration  statement filed with the SEC via EDGARLINK on November
22, 1995 (File No. 033-62203).

5/ To be filed by subsequent pre-effective amendment.

25.      DIRECTORS AND OFFICERS OF THE DEPOSITOR
<TABLE>
<CAPTION>

<S>                      <C>                         <C>
                         NAME AND PRINCIPAL
                         BUSINESS ADDRESS             POSITIONS AND OFFICES WITH
DEPOSITOR

                         Louis G. Lower, II           Chairman of the Board and Chief
                                                      Executive Officer
                         Michael J. Velotta           Vice President, Secretary,
                                                      General Counsel and Director
                         Brent H. Hamann              Director
                         John R. Hunter               Director
                         Thomas J. Wilson, II         Director and Vice Chairman
                         Marla G. Friedman            Vice President
                         Kevin R. Slawin              Vice President and Director
                         G. Craig Whitehead           Assistant Vice President and
                                                      Director
                         Timothy N. Vander Pas        Assistant Vice President and
                                                      Director
                         A. Sales Miller              Vice President, Operations
                         James P. Zils                Treasurer
                         Casey J. Sylla               Chief Investment Officer
                         Sarah R. Donahue             Assistant Vice President and
                                                      Director
                         Emma M. Kalaidjian           Assistant Secretary
                         Paul N. Kierig               Assistant Secretary
                         Mary J. McGinn               Assistant Secretary
                         Samuel H. Pilch              Controller
                         Barry S. Paul                Assistant Vice President
                         Robert N. Roeters            Assistant Vice President
                         C. Nelson Strom              Assistant Vice President and
                                                      Corporate Actuary
                         Kathleen Urbanowicz          Assistant Vice President,
                                                      Operations
                         Brenda D. Sneed              Assistant Secretary and Assistant
                                                      General Counsel
                         Nancy M. Bufalino            Assistant Treasurer
                         Patricia W. Wilson           Assistant Treasurer
                         Gregory C. Sernett           Assistant Secretary
                         Joanne M. Derrig             Assistant Secretary and Chief
                                                      Compliance Officer
</TABLE>

The principal  business address of the foregoing  officers and directors is 3100
Sanders Road, Northbrook, Illinois 60062.

26.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH DEPOSITOR OR REGISTRANT

Incorporated  herein by  reference  to the Form  10-K  Report,  Commission  File
#1-11840, March 31, 1999, The Allstate Corporation.

27.  NUMBER OF CONTRACT OWNERS

Not applicable.

28.  INDEMNIFICATION

The bylaws of both Glenbrook Life and Annuity  Company  (Depositor) and Allstate
Life  Financial  Services,  Inc.  (Principal   Underwriter),   provide  for  the
indemnification  of its directors,  officers and  controlling  persons,  against
expenses,  judgments,  fines and amounts paid in  settlement as incurred by such
person,  if such person  acted  properly.  No  indemnification  shall be made in
respect of any claim,  issue or matter as to which such  person  shall have been
adjudged to be liable for negligence or misconduct in the  performance of a duty
to the  Company,  unless a court  determines  such  person is  entitled  to such
indemnity.

Insofar as  indemnification  for liability  arising under the  Securities Act of
1933 may be permitted to  directors,  officers  and  controlling  persons of the
registrant pursuant to the foregoing  provisions,  or otherwise,  the registrant
has been advised that in the opinion of the Securities  and Exchange  Commission
such  indemnification  is against  public policy as expressed in the Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the registrant of expenses incurred
or paid by a director,  officer or  controlling  person of the registrant in the
successful  defense  of any  action,  suit,  or  proceeding)  is  asserted  such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

29.  RELATIONSHIP OF PRINCIPAL UNDERWRITER TO OTHER INVESTMENT COMPANIES

(a)  Allstate  Life  Financial  Services,  Inc.,  currently  acts as a principal
underwriter,  depositor,  sponsor,  or  investment  adviser  for  the  following
entities:

          -          Allstate Financial Advisors Separate Account I
          -          Glenbrook Life and Annuity Company Variable Annuity Account
          -          Glenbrook Life Multi-Manager Variable Account
          -          Allstate Life of New York Separate Account A
          -          Glenbrook Life Variable Life Separate Account A
          -          Glenbrook Life and Annuity Company Separate Account A
          -          Glenbrook Life AIM Variable Life Separate Account A
          -          Glenbrook Life Variable Life Separate Account B
          -          Allstate Life Insurance Company Separate Account A

(b) Following are the names, business addresses, positions, and offices, of each
director, officer, or partner of the principal underwriter:


NAME AND PRINCIPAL
BUSINESS ADDRESS                            POSITION OR OFFICE

Louis G. Lower, II                           Director
Kevin R. Slawin                              Director
Michael J. Velotta                           Director and Secretary
John R. Hunter                               President, Chief
                                             Executive Officer and Director
Janet M. Albers                              Vice President and
                                             Controller
Brent H. Hamann                              Vice President
Andrea J. Schur                              Vice President
Terry Young                                  General Counsel and
                                             Assistant Secretary
James P. Zils                                Treasurer
Lisa A. Burnell                              Assistant Vice President and
                                             Compliance Officer
Robert N. Roeters                            Assistant Vice President
Emma M. Kalaidjian                           Assistant Secretary
Brenda D. Sneed                              Assistant Secretary
Gregory C. Sernett                           Assistant Secretary
Nancy M. Bufalino                            Assistant Treasurer

The principal address of the foregoing officers,  directors and partners is 3100
Sanders Road, Northbrook, Illinois 60062.

(c) Underwriter compensation during fiscal year ended December 31, 1998:
<TABLE>
<CAPTION>

          (1)                      (2)                    (3)                     (4)                    (5)
<S>                          <C>                       <C>                 <C>                       <C>
                            NET UNDERWRITING
   NAME OF PRINCIPAL          DISCOUNTS AND
      UNDERWRITER              COMMISSIONS                                 COMPENSATION ON            BROKERAGE
                                                       REDEMPTION             COMMISSION            COMPENSATION


     Allstate Life               _______                  None                   None                   None
Financial Services, Inc.
</TABLE>


30.       LOCATION OF ACCOUNTS AND RECORDS

The depositor,  Glenbrook Life and Annuity  Company,  is located at 3100 Sanders
Road, Northbrook, Illinois 60062.

The principal underwriter, Allstate Life Financial Services, Inc., is located at
3100 Sanders Road, Northbrook, Illinois 60062.

Each company  maintains  physical  possession  of each  account,  book, or other
document  required  to be  maintained  by Section  31(a) of the 1940 Act and the
Rules under it.

31.      MANAGEMENT SERVICES

None.

32.      UNDERTAKINGS

The registrant promises to file a post-effective  amendment to this registration
statement as  frequently  as is  necessary to ensure that the audited  financial
statements in the  registration  statement are never more than 16 months old for
so long as  payments  under the  variable  annuity  contracts  may be  accepted.
Registrant  furthermore  agrees to include either as part of any  application to
purchase a contract  offered by the  prospectus,  a space that an applicant  can
check to request a statement of additional information or a post card or similar
written  communication  affixed  to or  included  in  the  prospectus  that  the
applicant can remove to send for a statement of additional information. Finally,
the registrant agrees to deliver any statement of additional information and any
financial  statements required to be made available under this Form N-4 promptly
upon written or oral request.

Representations Pursuant to Section 403(b) of the Internal Revenue Code

The depositor, Glenbrook Life and Annuity Company ("Glenbrook Life"), represents
that it is relying upon a November 28, 1988  Securities and Exchange  Commission
no-action letter issued to the American  Council of Life Insurance  ("ACLI") and
that the provisions of paragraphs 1-4 of the no-action letter have been complied
with.

Representations Regarding Contract Expense

The depositor,  Glenbrook Life,  represents  that the fees and charges  deducted
under the  individual  and group  flexible  premium  deferred  variable  annuity
contracts hereby  registered by this registration  statement,  in the aggregate,
are reasonable in relation to the services rendered, the expenses expected to be
incurred, and the risks assumed by Glenbrook Life.


<PAGE>



                                       SIGNATURES

As  required by the  Securities  Act of 1933 and the  Investment  Company Act of
1940, the Registrant,  Glenbrook Life Discover  Variable Account (A),  certifies
that it has duly caused this registration  statement to be signed on its behalf,
in the Township of  Northfield,  and the State of Illinois,  on this 11th day of
October, 1999.

                      GLENBROOK LIFE DISCOVER VARIABLE ACCOUNT (A)
                                      (REGISTRANT)
                         BY: GLENBROOK LIFE AND ANNUITY COMPANY
                                       (DEPOSITOR)
(SEAL)

Attest:       /s/JOANNE M. DERRIG          By:  /s/MICHAEL J. VELOTTA
              -------------------               ---------------------
              Joanne M. Derrig                  Michael J. Velotta
              Assistant Secretary               Vice President, Secretary
                                                  and General Counsel

Pursuant to the  requirements  of the  Securities Act of 1933 and the Investment
Company Act of 1940, this  registration  statement has been duly signed below by
the following  directors and officers of Glenbrook  Life and Annuity  Company on
the 11th day of October, 1999.
<TABLE>
<CAPTION>

<S>                                         <C>
* LOUIS G. LOWER, II                        Chairman of the Board of Directors and Chief
- --------------------                        Executive Officer
Louis G. Lower, II                          (Principal Executive Officer)

/s/ MICHAEL J. VELOTTA                      Vice President, Secretary, General Counsel
- ----------------------                      and Director
Michael J. Velotta

* JOHN R. HUNTER                            Director
- ----------------
John R. Hunter

* BRENT H. HAMANN                           Director
- -----------------
Brent H. Hamann

* TIMOTHY N. VANDER PAS                     Director
- -----------------------
Timothy N. Vander Pas

* THOMAS J. WILSON III                      Vice Chairman and Director
- ----------------------
Thomas J. Wilson III

* KEVIN R. SLAWIN                           Vice President and Director
- -----------------                           (Principal Financial Officer)
Kevin R. Slawin

* SARAH R. DONAHUE                          Assistant Vice President and Director
- ------------------
Sarah R. Donahue

* G. CRAIG WHITEHEAD                        Assistant Vice President and Director
- --------------------
G. Craig Whitehead


<PAGE>



* JAMES P. ZILS                             Treasurer
- ---------------
James P. Zils

* CASEY J. SYLLA                            Chief Investment Officer
- ----------------
Casey J. Sylla

*SAMUEL H. PILCH                            Controller
- ----------------                            (Principal Accounting Officer)
Samuel H. Pilch

* By: /s/ Michael J. Velotta, pursuant to Power of Attorney previously filed and
filed herewith.
</TABLE>


<PAGE>




                                      Exhibit Index


Exhibit 1         Resolution of The Board of Directors of Glenbrook Life
                  and Annuity Company authorizing establishment of the
                  Glenbrook Life Discover Variable Account A.

Exhibit 4         Form of Discover Variable Annuity Contract.

Exhibit 5         Form of Discover Variable Annuity Contract Application.

Exhibit 15        Powers of Attorney.




Glenbrook Life Discover Variable Account A

                  RESOLVED, that the Corporation,  pursuant to the provisions of
Section  20-651 of the Arizona  Insurance  Laws,  hereby  establishes a separate
account  designated  Glenbrook Life Discover  Variable Account A. (hereafter the
"Separate  Account") for the  following  use and  purposes,  and subject to such
conditions as hereinafter set forth.

                  FURTHER   RESOLVED,   that  the  Separate   Account  shall  be
established  for the purpose of providing for the issuance by the Corporation of
such variable annuity or such other contracts  ("Contracts") as the President or
designated  representative may designate for such purpose and shall constitute a
separate  account  into  which  are  allocated  amounts  paid  to or held by the
Corporation under such Contracts.

                  FURTHER RESOLVED,  that the income, gains and losses,  whether
or not  realized,  from assets  allocated  to the  Separate  Account  shall,  in
accordance  with the Contracts,  be credited to or charged  against such account
without regard to other income, gains, or losses of the Corporation.

                  FURTHER  RESOLVED,  that the fundamental  investment policy of
the Separate  Account  shall be to invest or reinvest the assets of the Separate
Account in securities  issued by an investment  company or investment  companies
registered  under  the  Investment  Company  Act of  1940,  as  amended,  as the
President or designated  representative may designate pursuant to the provisions
of the Contracts.

                  FURTHER RESOLVED,  that multiple subaccount  divisions be, and
hereby are,  established within the Separate Account to which net payments under
the Contracts will be allocated in accordance  with  instructions  received from
contractholders,  and that the  President or designated  representative  be, and
hereby is, authorized to increase or decrease the number of investment divisions
in the Separate Account as deemed necessary or appropriate.

                  FURTHER  RESOLVED,  that the  President  and Treasurer be, and
they hereby are, authorized to deposit such amount in the Separate Account or in
each  investment  division  thereof  as  may  be  necessary  or  appropriate  to
facilitate the commencement of the Separate Account's operations.

                  FURTHER  RESOLVED,  that the President of the  Corporation  or
designated   representative   be,  and  hereby  is,  authorized  to  change  the
designation of the Separate  Account to such other  designation as the President
or designated representative may deem necessary or appropriate.


                  FURTHER  RESOLVED,   that  the  appropriate  officers  of  the
Corporation, with such assistance from the Corporation's auditors, legal counsel
and independent  consultants or others as they may require,  be, and they hereby
are,  authorized and directed to take all action  necessary to: (a) register the
Separate Account as a unit investment trust under the Investment  Company Act of
1940, as amended;  (b) register the  Contracts in such amounts,  which may be an
indefinite  amount,  as the officers of the Corporation  shall from time to time
deem  appropriate  under  the  Securities  Act of 1933;  and (c) take all  other
actions which are necessary in  connection  with the offering of said  Contracts
for sale and the  operation of the Separate  Account in order to comply with the
Investment  Company  Act of 1940,  the  Securities  Exchange  Act of  1934,  the
Securities Act of 1933, and other applicable federal laws,  including the filing
of  any  amendments  to  registration  statements,  any  undertakings,  and  any
applications  for exemptions  from the  Investment  Company Act of 1940 or other
applicable  federal laws as the officers of the Corporation shall deem necessary
or appropriate.

                  FURTHER RESOLVED,  that the President and the General Counsel,
and  either  of them  with full  power to act  without  the  other,  hereby  are
authorized  and  empowered  to  prepare,  execute and cause to be filed with the
Securities and Exchange  Commission on behalf of the Separate Account and by the
Corporation as sponsor and depositor,  a Form of Notification of Registration on
Form N-8A, a  Registration  Statement  registering  the  Separate  Account as an
investment  company under the Investment Company Act of 1940, and a Registration
Statement under the Securities Act of 1933.

                  FURTHER  RESOLVED,   that  the  appropriate  officers  of  the
Corporation  be,  and they  hereby  are,  authorized  on behalf of the  Separate
Account  and on behalf of the  Corporation  to take any and all action that they
may deem  necessary or advisable in order to sell the  Contracts,  including any
registrations,  filings and  qualifications  of the  Corporation,  its officers,
agents and employees,  and the Contracts under the insurance and securities laws
of any of the states of the United States of America or other jurisdictions, and
in  connection  therewith,  to  prepare,  execute,  deliver  and  file  all such
applications,  reports,  covenants,  resolutions,  applications  for exemptions,
consents  to service  of process  and other  papers  and  instruments  as may be
required  under such laws,  and to take any and all  further  action  which said
officers of the Corporation may deem necessary or desirable  (including entering
into  whatever  agreements  and contracts may be necessary) in order to maintain
such  registrations or qualifications  for as long as said officers deem them to
be in the best interests of the Separate Account and the Corporation.







                  FURTHER RESOLVED, that the General Counsel for the Corporation
or designated  representative  be, and hereby is, authorized in the names and on
behalf  of the  Separate  Account  and  the  Corporation  to  execute  and  file
irrevocable  written  consents  on the part of the  Separate  Account and of the
Corporation  to be used in such  states  wherein  such  consents  to  service of
process may be  requisite  under the  insurance  or  securities  laws therein in
connection with said  registration or  qualification of Contracts and to appoint
the appropriate  state official,  or such other person as may be allowed by said
insurance  or  securities  laws,  agent  of  the  Separate  Account  and  of the
Corporation for the purpose of receiving and accepting process.

                  FURTHER  RESOLVED,  that the President of the  Corporation  or
designated representative be, and hereby is, authorized to establish criteria by
which the Corporation  shall institute  procedures to provide for a pass-through
of voting rights to the owners of such  Contracts as required by the  applicable
laws with respect to securities owned by the Separate Account.

                  FURTHER  RESOLVED,  that the President of the  Corporation  or
designated  representative  is hereby  authorized  to execute such  agreement or
agreements on such terms and subject to such  modifications  as deemed necessary
or  appropriate  (i) with a qualified  entity that will be  appointed  principal
underwriter  and  distributor  for  the  Contracts  and  (ii)  with  one or more
qualified banks or other  qualified  entities to provide  administrative  and/or
custodial  services in connection with the  establishment and maintenance of the
Separate Account and the design, issuance, and administration of the Contracts.

                  FURTHER RESOLVED,  that since it is expected that the Separate
Account  will  invest  in  the  securities  issued  by one  or  more  investment
companies,  the appropriate officers of the Corporation are hereby authorized to
execute  whatever  agreement or agreements as may be necessary or appropriate to
enable such investments to be made.

FURTHER RESOLVED, that the appropriate officers of the Corporation,  and each of
them, are hereby authorized to execute and deliver all such documents and papers
and to do or  cause  to be done  all  such  acts  and  things  as they  may deem
necessary or desirable to carry out the foregoing resolutions and the intent and
purposes thereof.





Glenbrook Life
and Annuity Company
A Stock Company

Headquarters: 3100 Sanders Road, Northbrook, Illinois 60062


Discover Variable Annuity, a Flexible Premium Deferred Variable Annuity

This  Certificate  is issued to customers of  participating  financial  services
corporations  according to the terms of Master Policy number  64900050 issued by
Glenbrook  Life and  Annuity  Company to the Trustee of the  Financial  Services
Group  Insurance  Trust.  The Trustee of the Financial  Services Group Insurance
Trust is called the Master Policyholder. This Certificate is issued in the state
of Illinois and is governed by Illinois law.

              We Will Make Periodic Income Payments Subject to the
             Provisions of This Certificate Beginning on the Payout
                 Start Date Specified on the Annuity Data Page.

            Death Benefits Are Provided Before the Payout Start Date.

         Income Payment Amounts Are Not Guaranteed as to Dollar Amounts
                          Before the Payout Start Date.

                                Nonparticipating

 This Is a Legal Certificate Between You and Glenbrook Life and Annuity Company
                               Insurance Company.
                     Please Read Your Certificate Carefully.

Return Privilege
Upon written request, we will provide you with factual information regarding the
benefits and  provisions  contained in this  Contract.  If you are not satisfied
with this  Certificate  for any  reason,  you may return it to us within 20 days
after you receive  it. We will refund any  purchase  payments  allocated  to the
Variable Account,  adjusted to reflect  investment gain or loss from the date of
allocation to the date of cancellation,  plus any purchase payments allocated to
the Fixed Account(s).  If this Certificate is qualified under Section 408 of the
Internal  Revenue Code,  we will refund the greater of any purchase  payments or
the Certificate Value.

            The Certificate Value or Income Payments May Increase or
               Decrease Based on the Investment Experience of the
                 Selected Sub-accounts of the Variable Account.

If you have any questions about your Discover Variable  Annuity,  please contact
Glenbrook Life and Annuity Company at (800) 242-4402.
- ---------------------------------------------------------------------------
[GRAPHIC OMITTED]
- ---------------------------------------------------------------------------
- ---------------------------------------------------------------------------
[GRAPHIC OMITTED]
- ---------------------------------------------------------------------------






         Secretary                   Chairman and Chief Executive Officer

GLA89                               Page 1
<PAGE>


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

TABLE OF CONTENTS
- ----------------------------------------------------------------------------

INDEX........................................................................3

CERTIFICATE SUMMARY..........................................................4

DEFINITIONS..................................................................5

THE PERSONS INVOLVED.........................................................7

ACCUMULATION PHASE...........................................................8

PAYMENTS ON DEATH...........................................................11

PAYOUT PHASE................................................................12

INCOME PAYMENT TABLES.......................................................14

GENERAL PROVISIONS..........................................................16

GLA89                               Page 2
<PAGE>



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

INDEX
- -----------------------------------------------------------------------------

Accounting Procedures........................................................10
Administrative Expense Charge................................................10
Annual Statement.............................................................16
Annuitant.....................................................................8
Annuity Transfers............................................................13
Annuity Unit Value...........................................................13
Beneficiary...................................................................8
Certificate Value............................................................10
Charges......................................................................10
Crediting Interest............................................................9
Death Benefit................................................................12
Death of Owner or Annuitant..................................................11
Deferment of Payments........................................................16
Entire Contract, The.........................................................16
Fixed Amount Income Payments.................................................13
Income Payments..............................................................13
Income Plans.................................................................13
Incontestability.............................................................16
Misstatement of Age or Sex...................................................16
Mortality and Expense Risk Charge............................................11
Net Investment Factor........................................................10
Owner.........................................................................7
Payout Start Date............................................................12
Payout Terms and Conditions..................................................14
Purchase Payments.............................................................8
Settlements..................................................................12
Standard Fixed Account........................................................9
Taxes........................................................................11
Transfers.....................................................................9
Variable Account Modifications...............................................17
Variable Amount Income Payments..............................................13
Withdrawal...................................................................11





GLA89                               Page 3

<PAGE>


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

CERTIFICATE SUMMARY
- -----------------------------------------------------------------------------


This is a no sales load flexible premium deferred variable annuity.  It provides
a Death Benefit if the Owner dies before the Payout Start Date. It also provides
periodic income payments if you are living on the Payout Start Date. The initial
purchase  payment is shown on the  Annuity  Data Page.  You may make  additional
purchase  payments subject to the limitations  described in the Purchase Payment
provision.

The  Certificate  Value will vary  according  to how you  allocate  the purchase
payments.  Allocations  may be made to one or more of the Variable  Sub-accounts
and to the Standard Fixed Account. The amount of the Certifictae Value will vary
with the investment  performance of the selected  Variable  Sub-accounts and the
Standard Fixed Account.

You may withdraw part or all of the  Certificate  Value at any time on or before
the Payout  Start Date.  Any such  withdrawal  will cause the amount of periodic
income payments to be reduced.

Above  is a  brief  description  of the  provisions  of  this  Certificate.  The
provisions are fully described on the remaining pages of the Certificate.



GLA89                               Page 4
<PAGE>


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

DEFINITIONS
- -----------------------------------------------------------------------------

Accumulation  Phase The "Accumulation  Phase" is the first of two phases of your
Certificate.  During this phase,  purchase  payments  are  allocated to selected
Investment Alternatives and the Certificate Value accumulates.  The Accumulation
Phase  begins on the Issue Date of the  Certificate  stated on the Annuity  Data
Page.  This  phase  will  continue  until  the  Payout  Start  Date  unless  the
Certificate is terminated before that date.

Accumulation Unit An "Accumulation Unit" is a measure of your ownership interest
in a Variable Sub-account before the Payout Start Date.

Accumulation  Unit  Value  The  "Accumulation  Unit  Value" is the value of each
Accumulation  Unit  which is  calculated  each  Valuation  Date.  Each  Variable
Sub-account has its own Accumulation Unit Value.

Annuitant  The  "Annuitant"  is the person whose life is used to  determine  the
duration  and  amount of any  income  payments.  The  Annuitant  is named on the
Annuity Data Page but may be changed by the Owner.

Beneficiary The "Beneficiary" will become the new Owner as follows.  If the sole
surviving Owner dies before the Payout Start Date, the  Beneficiary,  as the new
Owner,  will receive the Death Benefit.  If the sole surviving  Owner dies after
the Payout  Start Date,  the  Beneficiary,  as the new Owner,  will  receive any
remaining  guaranteed  income payments.  The Beneficiary is named on the Annuity
Data Page, but may be changed by the Owner.

Certificate Value  "Certificate  Value" is the total value of the amounts in the
Variable  Sub-accounts  plus the total value in the Standard Fixed Account as of
any Valuation Date on or before the Payout Start Date.

Certificate Year "Certificate  Year" is a one year period beginning on the Issue
Date of the Certificate and on each anniversary of the Issue Date.

Death  Benefit  The "Death  Benefit"  is the  amount we will pay if you,  or the
Annuitant if you are not a Natural Person, die before the Payout Start Date. The
amount of the Death Benefit is defined in the Death Benefit provision.

GLA89                               Page 5
<PAGE>

Fixed Amount Income Payments  "Fixed Amount Income  Payments" are income payment
amounts that are fixed for the duration of the Income Plan.

Investment   Alternatives  The  "Investment   Alternatives"   are  the  Variable
Sub-accounts  and the Standard  Fixed  Account shown on the  enrollment.  We may
offer additional Variable  Sub-accounts at our discretion.  We reserve the right
to limit the availability of the Investment Alternatives.

Income  Plan An  "Income  Plan" is a series of  payments  on a  scheduled  basis
beginning on the Payout Start Date. The available  Income Plans are described in
the Income Plans provision.

Issue Age "Issue Age" is the age of the Annuitant on the Annuitant's birthday on
or before the Issue Date.

Issue Date The "Issue  Date" is the date when  coverage  under this  Certificate
becomes effective.  It is also the date used to determine Certificate Years. The
Issue Date is shown on the Annuity Data Page.

Joint  Annuitant  "Joint  Annuitant" is applicable  only if a Joint and Survivor
Income Plan is selected. The Joint Annuitant will be named at the time of Income
Plan selection.

Natural Person "Natural  Person" is a living  individual or trust entity that is
treated as an  individual  for Federal  Income Tax  purposes  under the Internal
Revenue Code.

Net Investment Factor For each Variable Sub-account, the "Net Investment Factor"
is the  proportional  change in the  Accumulation  Unit Value during a Valuation
Period.

Owner The "Owner" is referred  to as "you" and "your" in this  Certificate.  The
Owner is named on the Annuity Data Page, but may be changed.

Payout  Phase  The  "Payout  Phase"  is the  second  of the two  phases  of your
Certificate.  During this phase the Certificate  Value less any applicable taxes
is  applied to the Income  Plan you  choose and is paid out as  provided  in the
chosen plan.  The Payout  Phase  begins on the Payout  Start Date.  It continues
until we make the last payment as provided by the Income Plan chosen.

Payout Start Date The "Payout Start Date" is the date the Certificate Value less
any applicable taxes is applied to an Income Plan. The anticipated  Payout Start
Date is shown on the Annuity Data Page.  You may change the Payout Start Date by
writing to us at least 30 days before this date.

Valuation  Date A  "Valuation  Date" is any date the New York Stock  Exchange is
open for trading except for days in which there is  insufficient  trading in the
Variable Account's  portfolio  securities such that the value of accumulation or
annuity  units might not be  materially  affected by changes in the value of the
portfolio securities.

GLA89                               Page 6
<PAGE>


Valuation Period A "Valuation  Period" is the period that begins on the close of
one Valuation Date and ends on the close of the succeeding Valuation Date.

Variable  Account The "Variable  Account" for this  Certificate is the Glenbrook
Life Variable Account A. This account is a separate  investment account to which
we allocate assets  contributed  under this and certain other  certificates  and
Certificates. These assets will not be charged with liabilities arising from any
other business we may have.

Variable  Sub-accounts The Variable Account is divided into  Sub-accounts.  Each
"Variable  Sub-account"  invests  solely  in  the  shares  of  the  mutual  fund
underlying that Sub-account.

Variable Amount Income  Payments  "Variable  Amount Income  Payments" are income
payment amounts that vary based on any Variable Sub-account.


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

THE PERSONS INVOLVED
- -----------------------------------------------------------------------------

Owner  The  person  named  at the  time  of  enrollment  is the  Owner  of  this
Certificate unless subsequently changed. As Owner, you will receive any periodic
income payments, unless you have directed us to pay them to someone else.

You may exercise all rights stated in this Certificate, subject to the rights of
any irrevocable Beneficiary.

You may  change  the  Owner  or  Beneficiary  at any  time.  You may  name a new
Annuitant only upon the death of the current Annuitant.  Once we have received a
satisfactory  written request for a change of Owner or  Beneficiary,  the change
will take effect as of the date you signed it. We are not liable for any payment
we make or other  action we take  before  receiving  any  written  request for a
change  from  you.  You may not  assign  an  interest  in  this  Certificate  as
collateral or security for a loan.

If the sole surviving  Owner dies before the Payout Start Date, the  Beneficiary
becomes the new Owner.  If the sole surviving  Owner dies after the Payout Start
Date,  the  Beneficiary  becomes the new Owner and will  receive any  subsequent
guaranteed income payments.

If more than one person is designated as Owner:

GLA89                               Page 7
<PAGE>

o    Owner as used in this  Certificate  refers to all persons  named as Owners,
     unless otherwise indicated;

o    any request to exercise ownership rights must be signed by all Owners; and

o    on the death of any person who is an Owner,  the surviving  person(s) named
     as Owner will continue as Owner.

Annuitant  The  Annuitant  is the person  named on the  Annuity  Data Page.  The
Annuitant must be a living individual.  If the Annuittant dies before the payout
start date, the new Annuitant will be:

o    the youngest Owner, if the Owner(s) are living; otherwise,

o    the youngest Beneficiary

Beneficiary The Beneficiary is the person(s) named on the Annuity Data Page, but
may be  changed  by the  Owner,  as  described  above.  We  will  determine  the
Beneficiary  from the most recent written  request we have received from you. If
you do not name a Beneficiary or if the  Beneficiary  named is no longer living,
the Beneficiary will be:

o    your spouse if living; otherwise

o    your children equally if living; otherwise

o    your estate.

The  Beneficiary may become the Owner under the  circumstances  described in the
Owner provision above.

Natural  Person  As used in this  Certificate,  Natural  Person  means a  living
individual or trust entity that is treated as an individual  for Federal  Income
Tax purposes under the Internal Revenue Code.


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

ACCUMULATION PHASE
- -----------------------------------------------------------------------------

Purchase  Payments  The initial  purchase  payment is shown on the Annuity  Data
Page. You may make subsequent  purchase payments during the Accumulation  Phase.
The number of purchase  payments is unlimited.  The minimum amount of additional
purchase payments we will accept is $100.

GLA89                               Page 8
<PAGE>

We will invest the purchase payments in the Investment  Alternatives you select.
You may allocate any portion of your purchase  payment in whole percents from 0%
to 100% to any of the Investment  Alternatives.  The total allocation must equal
100%.

The  allocation  of the initial  purchase  payment is shown on the Annuity  Data
Page.  Allocation of each  subsequent  purchase  payment will be the same as the
allocation  for  the  most  recent  purchase   payment  unless  you  change  the
allocation. You may change the allocation of subsequent purchase payments at any
time,  without charge,  simply by giving us written  notice.  Any change will be
effective at the time we receive the notice and will  reflect the next  computed
price(s).

Standard Fixed Account We reserve the right to offer a Standard Fixed Account at
our  discretion.  The guarantee  periods of the Standard Fixed Account may range
from 1 - 10 years. We reserve the right to offer any of these guarantee  periods
at our  discretion.  Money in the Standard  Fixed Account will earn interest for
the  guarantee  period  chosen  at the  current  rate in  effect  at the time of
allocation or transfer to the Standard Fixed Account. After the guarantee period
expires,  a renewal rate will be declared at our discretion.  Subsequent renewal
dates will be on anniversaries of the first renewal date.

Crediting  Interest We credit interest daily to money allocated to each Standard
Fixed  Account at a rate which  compounds  over one year to the interest rate we
guaranteed when the money was allocated.  We will credit interest to the initial
purchase  payment  from the Issue Date.  We will credit  interest to  subsequent
purchase  payments  from the date we receive  them at a rate  declared by us. We
will  credit  interest to  transfers  from the date the  transfer  is made.  The
interest  rate for each  Standard  Fixed Account will never be less than 3.0% as
shown on the Annuity Data Page.

Transfers  Before  the  Payout  Start  Date,  you  may  transfer  amounts  among
Investment Alternatives.  You may make 12 transfers during each Certificate Year
without charge.  Each transfer after the 12th transfer in any  Certificate  Year
may be assessed a $10 transfer fee. All transfers  made at the same time will be
treated as one request.

We reserve the right to limit the number of transfers in any Certificate Year or
to refuse any  transfer  request for an Owner or certain  Owners if, in our sole
discretion, we believe that:

o    excessive trading by such Owner or Owners or a specific transfer request or
     group of transfer requests may have a detrimental  effect on Unit Values or
     the  share  prices  of the  underlying  mutual  funds  or  would  be to the
     disadvantage of other Certificate Owners; or

o    we are  informed  by one or more of the  underlying  mutual  funds that the
     purchase or redemption  of shares is to be restricted  because of excessive
     trading or a specific  transfer or group of  transfers  is deemed to have a
     detrimental effect on share prices of affected underlying mutual funds.

GLA89                               Page 9
<PAGE>

Such  restrictions may be applied in any manner which is reasonably  designed to
prevent any use of the  transfer  right which is  considered  by us to be to the
disadvantage of the other Certificate Owners.

We reserve the right to waive the transfer fees and  restrictions  contained in
this Certificate.

Certificate Value On the Issue Date of the Certificate, the Certificate Value is
equal to the initial  purchase  payment.  After the Issue Date, the "Certificate
Value" is equal to the sum of:

o    the  number of  Accumulation  Units you hold in each  Variable  Sub-account
     multiplied by the Accumulation  Unit Value for that Sub-account on the most
     recent Valuation Date; plus

o    the total value you have in the Standard Fixed Account.

If you withdraw  the entire  Certificate  Value,  you may receive an amount less
than the  Certificate  Value because income tax  withholding,  and a premium tax
charge may apply.

Accounting  Procedures The portion of the Certificate  Value  attributed to each
Variable  Sub-account  is maintained in  Accumulation  Units.  Amounts which you
allocate to a Variable  Sub-account are used to purchase  Accumulation  Units in
that Sub-account. Additions or transfers to a Variable Sub-account will increase
the number of Accumulation Units for that Sub-account.  Withdrawals or transfers
from a Variable  Sub-account will decrease the number of Accumulation  Units for
that Sub-account.

An  Accumulation   Unit  Value  is  determined  for  each  Valuation  Date.  The
Accumulation  Unit Value for each Sub-account at the end of any Valuation Period
is equal to the Accumulation Unit Value at the end of the immediately  preceding
Valuation Period times the Sub-account's Net Investment Factor for the Valuation
Period.  Each Accumulation Unit Value may go up or down based on the performance
of the mutual fund underlying the Sub-account.

Net Investment Factor For each Variable Sub-account, the "Net Investment Factor"
for a Valuation Period is equal to:

o    The sum of:

     o    the net asset  value  per  share of the  mutual  fund  underlying  the
          Sub-account  determined  at the end of the current  Valuation  Period,
          plus

     o    the per share  amount of any  dividend or capital  gain  distributions
          made by the mutual fund underlying the Sub-account  during the current
          Valuation Period.

GLA89                               Page 10
<PAGE>

o    Divided by the net asset value per share of the mutual fund  underlying the
     Sub-account determined as of the end of the immediately preceding Valuation
     Period.

o    The  result  is  reduced  by the  Administrative  Expense  Charge  and  the
     Mortality  and  Expense  Risk  Charge  corresponding  to the portion of the
     current calendar year that is in the current Valuation Period.

Charges The charges for this Certificate include Administrative Expense Charges,
Mortality and Expense Risk Charges, transfer fees, and taxes.

Administrative Expense Charge The annualized  Administrative Expense Charge will
never be greater than 0.10%. (See Net Investment Factor for a description of how
this charge is applied.)

Mortality  and Expense  Risk Charge The  annualized  Mortality  and Expense Risk
Charge  will never be  greater  than  0.50%.  (See Net  Investment  Factor for a
description of how this charge is applied.)

Our actual mortality and expense experience will not adversely affect the dollar
amount of variable benefits or other  contractual  payments or values under this
Certificate.

Taxes Any premium tax or income tax withholding relating to this Certificate may
be deducted  from  purchase  payments or the  Certificate  Value when the tax is
incurred or at a later time.

Withdrawal You have the right to withdraw part or all of your Certificate  Value
at any time on or before the Payout Start Date.  A  withdrawal  must be at least
$50. If any withdrawal  reduces the  Certificate  Value to less than $1,000,  we
will treat the request as a withdrawal of the entire  Certificate  Value. If you
withdraw the entire Certificate Value, the Certificate will terminate.

You must  specify the  Investment  Alternative(s)  from which you wish to make a
withdrawal.  When you make a withdrawal,  your Certificate Value will be reduced
by any applicable taxes and the amount paid to you.

We reserve  the right to waive the  withdrawal  restrictions  contained  in this
Certificate.


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

PAYMENTS ON DEATH
- -----------------------------------------------------------------------------

Death  of Owner or  Annuitant  A  benefit  may be paid to the  Owner  determined
immediately after the death if, before the Payout Start Date:

o    any Owner dies; or

o    the Annuitant dies and the Owner is not a Natural Person.

If the Owner  eligible to receive a benefit is not a Natural  Person,  the Owner
may elect to receive the benefit in one or more distributions. Otherwise, if the
Owner is a Natural  Person,  the Owner may elect to receive a benefit  either in
one or more distributions or by periodic payments through an Income Plan.

GLA89                               Page 11
<PAGE>

The entire value of the  Certificate  must be distributed  within five (5) years
after the date of death  unless an Income Plan is elected or a surviving  spouse
continues the Certificate in accordance with the provisions below.

If an Income Plan is elected,  payments  from the Income Plan must begin  within
one year of the date of death and must be payable throughout:

o    the life of the Owner; or

o    a period not to exceed the life expectancy of the Owner; or

o    the life of the Owner with payments  guaranteed  for a period not to exceed
     the life expectancy of the Owner.

If the surviving spouse of the deceased Owner is the new Owner,  then the spouse
may elect one of the options listed above or may continue the Certificate in the
Accumulation Phase as if the death had not occurred.

Death  Benefit  Before the Payout Start Date,  the Death Benefit is equal to the
greater of the following Death Benefit alternatives:

o    the sum of all purchase  payments  less any prior  withdrawals  and premium
     taxes; or

o    the Certificate Value on the date we determine the Death Benefit.

We will  determine the value of the Death Benefit as of the end of the Valuation
Period  during  which we receive a  complete  request  for  payment of the Death
Benefit. A complete request includes due proof of death.

Settlements  We may require that this  Certificate  be returned to us before any
settlement.  We must receive due proof of death of the Owner or Annuitant before
settlement of a death claim.

Any full  withdrawal or Death Benefit  under this  Certificate  will not be less
than the  minimum  benefits  required  by any  statute of the state in which the
Certificate is delivered.


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

PAYOUT PHASE
- -----------------------------------------------------------------------------

Payout Start Date The anticipated Payout Start Date is shown on the Annuity Data
Page.  You may change  the  Payout  Start Date by writing to us at least 30 days
before this date.

GLA89                               Page 12
<PAGE>

The Payout Start Date must be on or before the later of:

o    the Annuitant's 90th birthday; or

o    the 10th anniversary of the Certificate's Issue Date.

Income Plans The Certificate Value on the Payout Start Date, less any applicable
taxes, will be applied to your Income Plan choice from the following list:

1.   Life Income with Guaranteed Payments.  We will make payments for as long as
     the Annuitant  lives.  If the Annuitant dies before the selected  number of
     guaranteed  payments  have been made, we will continue to pay the remainder
     of the guaranteed payments.

2.   Joint and  Survivor  Life Income  with  Guaranteed  Payments.  We will make
     payments for as long as either the Annuitant or Joint  Annuitant  lives. If
     both the Annuitant and the Joint  Annuitant die before the selected  number
     of  guaranteed  payments  have  been  made,  we  will  continue  to pay the
     remainder of the guaranteed payments.

3.   Guaranteed Number of Payments. We will make payments for a specified number
     of months  beginning on the Payout Start Date. These payments do not depend
     on the Annuitant's  life. The number of months guaranteed may be from 60 to
     360.

We reserve the right to make available other Income Plans.

Income Payments  Income payment amounts may be Variable Amount Income  Payments,
Fixed Amount Income  Payments,  or both. The method of  calculating  the initial
payment is different for the two types of payments.

Variable  Amount Income  Payments  Variable  Amount Income Payments will vary to
reflect the  performance  of the  Variable  Account.  The portion of the initial
income  payment based upon a particular  Variable  Sub-account  is determined by
applying the amount of the Certificate  Value in that  Sub-account on the Payout
Start Date, less any applicable  premium tax, to the appropriate  value from the
Income Payment  Table.  This portion of the initial income payment is divided by
the Annuity Unit Value on the Payout Start Date for that Variable Sub-account to
determine the number of Annuity Units from that  Sub-account  which will be used
to  determine  subsequent  income  payments.  Unless  transfers  are made  among
Variable Sub-accounts, each subsequent income payment from that Sub-account will
be that number of Annuity Units times the Annuity Unit Value for the Sub-account
for the Valuation Date on which the income payment is made.

Annuity Unit Value The Annuity Unit Value for each Variable  Sub-account  at the
end of any Valuation Period is calculated by:

o    multiplying the Annuity Unit Value at the end of the immediately  preceding
     Valuation  Period by the  Sub-account's  Net  Investment  Factor during the
     period; and then

GLA89                               Page 13
<PAGE>

o    dividing  the  result by 1.000  plus the  assumed  investment  rate for the
     period.  The assumed  investment rate is an effective annual rate of 3%. We
     reserve the right to offer an assumed investment rate greater than 3%.

Fixed Amount Income  Payments The income  payment  amount derived from any money
allocated to the Fixed Account  Options during the  Accumulation  Phase is fixed
for the  duration  of the  Income  Plan.  The Fixed  Amount  Income  Payment  is
calculated by applying the portion of the Certificate Value in the Fixed Account
Options on the Payout  Start  Date,  less any  applicable  premium  tax,  to the
greater of the appropriate  value from the Income Payment Table selected or such
other value as we are offering at that time.

Annuity Transfers After the Payout Start Date, no transfers may be made from the
Fixed Amount Income Payment.  Transfers between Variable  Sub-accounts,  or from
the Variable Amount Income Payment to the Fixed Amount Income  Payment,  may not
be made for six months after the Payout Start Date.  Transfers  may be made once
every six months thereafter.

Payout Terms and  Conditions  The income  payments are subject to the  following
terms and conditions:

o    If the Certificate  Value is less than $2,000,  or not enough to provide an
     initial payment of at least $20, we reserve the right to:

     o    change the payment frequency to make the payment at least $20; or

     o    terminate the Certificate and pay you the Certificate  Value, less any
          applicable taxes, in a lump sum.

o    If we do not  receive a written  choice of an Income Plan from you at least
     30 days before the Payout  Start Date,  the Income Plan will be Life Income
     with Guaranteed Payments for 120 months.

o    If you choose an Income Plan which  depends on any  person's  life,  we may
     require:

     o    proof of age and sex before income payments begin; and

     o    proof that the  Annuitant or Joint  Annuitant is still alive before we
          make each payment.

o    After the  Payout  Start  Date,  the  Income  Plan  cannot be  changed  and
     withdrawals  cannot be made unless income  payments are being made from the
     Variable Account under Income Plan 3. You may terminate the income payments
     being made from the  Variable  Account  under Income Plan 3 at any time and
     withdraw their value.

GLA89                               Page 14
<PAGE>

o    If any Owner dies during the Payout Phase,  the remaining  income  payments
     will be paid to the successor Owner as scheduled.


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

INCOME PAYMENT TABLES
- -----------------------------------------------------------------------------

The initial income payment will be at least the amount based on the adjusted age
of the  Annuitant(s)  and the tables below,  less any federal income taxes which
are  withheld.  The  adjusted  age is the actual  age on the  Payout  Start Date
reduced  by one year for each six full  years  between  January  1, 1983 and the
Payout Start Date.  Income payments for ages and guaranteed  payment periods not
shown below will be determined on a basis consistent with that used to determine
those that are shown.  The Income  Payment Tables are based on 3.0% interest and
the 1983a Annuity Mortality Tables.

Income Plan 1 - Life Income with Guaranteed Payments for 120 Months
<TABLE>
<CAPTION>

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

                           Monthly Income Payment for each $1,000 Applied to this Income Plan
============================================================================================================================
- ------------------- ---------------------- ---------------- ---------------------- ---------------- ========================

Annuitant's  Adjusted                      Annuitant's                             Annuitant's
Age                   Male     Female      Adjusted Age       Male     Female      Adjusted Age       Male    Female
- ------------------- ---------------------- ---------------- ---------------------- ---------------- ========================
- ------------------- ---------------------- ---------------- ---------------------- ---------------- ========================

<S>    <C>             <C>       <C>              <C>          <C>      <C>               <C>          <C>      <C>
       35              $3.43     $3.25            49           $4.15    $3.82             63           $5.52    $4.97
       36               3.47      3.28            50            4.22     3.88             64            5.66     5.09
       37               3.51      3.31            51            4.29     3.94             65            5.80     5.22
       38               3.55      3.34            52            4.37     4.01             66            5.95     5.35
       39               3.60      3.38            53            4.45     4.07             67            6.11     5.49
       40               3.64      3.41            54            4.53     4.14             68            6.27     5.64
       41               3.69      3.45            55            4.62     4.22             69            6.44     5.80
       42               3.74      3.49            56            4.71     4.29             70            6.61     5.96
       43               3.79      3.53            57            4.81     4.38             71            6.78     6.13
       44               3.84      3.58            58            4.92     4.46             72            6.96     6.31
       45               3.90      3.62            59            5.02     4.55             73            7.13     6.50
       46               3.96      3.67            60            5.14     4.65             74            7.31     6.69
       47               4.02      3.72            61            5.26     4.75             75            7.49     6.88
       48               4.08      3.77            62            5.39     4.86
- ------------------- ---------------------- ---------------- ---------------------- ---------------- ========================
</TABLE>

<TABLE>
<CAPTION>
Income Plan 2 - Joint and Survivor Life Income with Guaranteed Payments for 120 Months
==============================================================================================================================

                            Monthly Income Payment for each $1,000 Applied to this Income Plan
==============================================================================================================================
- -------------------- =========================================================================================================

                     Female Annuitant's Adjusted Age
- -------------------- =========================================================================================================
- -------------------- ---------- ------------ ----------- ---------- ---------- ---------- ---------- --------- ===============

      Male
Annuitant's  Adjusted   35         40        45          50         55           60         65           70         75
Age
- -------------------- ---------- ------------ ----------- ---------- ---------- ---------- ---------- --------- ===============
- -------------------- ---------- ---------- ---------- ---------- ----------- ---------- ------------ ----------- =============

<S>    <C>            <C>        <C>        <C>        <C>        <C>         <C>        <C>          <C>         <C>
       35             $3.09      $3.16      $3.23      $3.28      $3.32       $3.36      $3.39        $3.40       $3.42
       40              3.13       3.22       3.31       3.39       3.46        3.51       3.56         3.59        3.61
       45              3.17       3.28       3.39       3.50       3.60        3.69       3.76         3.81        3.85
       50              3.19       3.32       3.45       3.60       3.74        3.87       3.98         4.07        4.14
       55              3.21       3.35       3.51       3.68       3.87        4.06       4.23         4.37        4.48
       60              3.23       3.37       3.55       3.75       3.98        4.23       4.47         4.70        4.88
       65              3.24       3.39       3.57       3.80       4.07        4.37       4.71         5.04        5.34
       70              3.24       3.40       3.59       3.83       4.13        4.48       4.90         5.36        5.81
       75              3.25       3.41       3.61       3.86       4.17        4.56       5.04         5.61        6.22
- -------------------- ---------- ---------- ---------- ---------- ----------- ---------- ------------ ----------- =============
</TABLE>
GLA89                               Page 15
<PAGE>

Income Plan 3 - Guaranteed Number of Payments
- --------------------------------- =============================================

                                  Monthly Income Payment for each
    Specified Period              $1,000 Applied to this Income Plan
- --------------------------------- =============================================
- --------------------------------- =============================================

        10 Years                                    $9.61
        11 Years                                     8.86
        12 Years                                     8.24
        13 Years                                     7.71
        14 Years                                     7.26
        15 Years                                     6.87
        16 Years                                     6.53
        17 Years                                     6.23
        18 Years                                     5.96
        19 Years                                     5.73
        20 Years                                     5.51
- --------------------------------- =============================================


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

GENERAL PROVISIONS
- -----------------------------------------------------------------------------

     The Entire Contract The entire contract consists of this  Certificate,  the
     Master Policy, the Master Policy application,  any written application, and
     any Certificate endorsements and riders.

     All statements made in a written  application are  representations  and not
     warranties.  No  statement  will be used by us in  defense of a claim or to
     void the Certificate unless it is included in a written application.

     We may not modify this Certificate without your consent,  except to make it
     comply with any changes in the Internal  Revenue Code or as required by any
     other  applicable  law. Only our officers may change this  Certificate.  No
     other individual may do this.

     Master Policy  Amendment or Termination The Master Policy may be amended by
     us, terminated by us, or terminated by the Master Policyholder  without the
     consent of any other person. No termination  completed after the issue date
     of  this   Certificate   will  adversely  affect  your  rights  under  this
     Certificate.

     Incontestability We will not contest the validity of this Certificate after
     the issue date.

     Misstatement  of Age or Sex If any age or sex has been  misstated,  we will
     pay the amounts which would have been paid at the correct age and sex.

     If we find the  misstatement of age or sex after the income payments begin,
     we will:

     o    pay  all  amounts  underpaid   including  interest  calculated  at  an
          effective annual rate of 6%; or

GLA89                               Page 16
<PAGE>

     o    stop  payments  until the total  payments  are equal to the  corrected
          amount.


     Annual  Statement At least once a year,  before the Payout  Start Date,  we
     will send you a statement containing Certificate Value information. We will
     provide you with Certificate Value information at any time upon request.
     The information presented will comply with any applicable law.

     Deferment of Payments We will pay any amounts due from the Variable Account
     under this Certificate within seven days, unless:

     o    the New York Stock Exchange is closed for other than usual weekends or
          holidays, or trading on such Exchange is restricted;

     o    an  emergency  exists  as  defined  by  the  Securities  and  Exchange
          Commission; or

     o    the  Securities  and  Exchange   Commission   permits  delay  for  the
          protection of Certificate holders.

We reserve the right to postpone  payments or transfers  from the Standard Fixed
Account for up to six months. If we elect to postpone payments or transfers from
the Fixed Account  Options for 30 days or more, we will pay interest as required
by  applicable  law. Any interest  would be payable from the date the payment or
transfer request is received by us to the date the payment or transfer is made.

Variable Account  Modifications We reserve the right, subject to applicable law,
to make  additions  to,  deletions  from, or  substitutions  for the mutual fund
shares underlying the Variable  Sub-accounts.  We will not substitute any shares
attributable  to your interest in a Variable  Sub-account  without notice to you
and  beforeapproval  of the  Securities and Exchange  Commission,  to the extent
required by the Investment Company Act of 1940, as amended.

We reserve the right to  establish  additional  Variable  Sub-accounts,  each of
which would invest in shares of another mutual fund. You may then instruct us to
allocate  purchase  payments or transfers to such  Sub-accounts,  subject to any
terms set by us or the mutual fund.

In the event of any such substitution or change, we may by endorsement make such
changes as may be  necessary or  appropriate  to reflect  such  substitution  or
change.

If we deem it to be in the best  interests of persons having voting rights under
the Certificates,  the Variable Account may be operated as a management  company
under the Investment Company Act of 1940, as amended,  or it may be deregistered
under such Act in the event such registration is no longer required.

GLA89                               Page 17




DPG89

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

ANNUITY DATA
- ------------------------------------------------------------------------------

CERTIFICATE  NUMBER:.................................................444444444

ISSUE DATE:........................................................May 1, 1999

INITIAL PURCHASE PAYMENT:...........................................$10,000.00
                                                                           IRA

INITIAL ALLOCATION OF PURCHASE PAYMENT:

                                    ALLOCATED
                                   AMOUNT (%)

VARIABLE SUB-ACCOUNTS
        MSUF Value                                   20%
        Van Kampen LIT Emerging                      20%
        Dreyfus Capital Appreciation                 20%
        Scudder International                        20%

                                                   ANNUALIZED       RATE
                                      ALLOCATED    GUARANTEED       GUARANTEE
                                      AMOUNT (%)   INTEREST RATE    THROUGH

STANDARD FIXED ACCOUNT
        1 Year Guarantee Period        20%            5.00%         05/01/2000


MINIMUM GUARANTEED RATE FOR STANDARD FIXED ACCOUNT :.....................3.00%

PAYOUT START DATE:.................................................May 1, 2054
        (Latest date when income payments must begin.)


OWNER:................................................................John Doe

ANNUITANT:............................................................John Doe
        AGE AT ISSUE:....................................................35
        SEX:.............................................................Male


BENEFICIARY           RELATIONSHIP TO OWNER               PERCENTAGE
- -----------           ---------------------               ----------
Jane Doe                       Wife                          100%

CONTINGENT BENEFICIARY         RELATIONSHIP TO OWNER              PERCENTAGE
- ----------------------         ---------------------              ----------
June Doe                             Daughter                         100%





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these presents that Sarah R. Donahue,  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, her attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or her  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/SARAH R. DONAHUE
- ----------------------------
Sarah R. Donahue


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents that Brent H. Hamann,  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ BRENT H. HAMANN
- ----------------------------
Brent H. Hamann


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents  that John R.  Hunter  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ JOHN R. HUNTER
- ----------------------------
John R. Hunter


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these presents that Louis G. Lower, II, whose signature
appears below, constitutes and appoints Michael J. Velotta his attorney-in-fact,
with  power of  substitution,  and herein  any and all  capacities,  to sign any
reports and  amendments  thereto for the Form N-4 for  Glenbrook  Life  Discover
Variable  Account  (A) and to file the same,  with  exhibits  thereto  and other
documents, in connection therewith, with the Securities and Exchange Commission,
hereby ratifying and confirming all that each of said  attorney-in-fact,  or his
substitute or substitutes, may do or cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ LOUIS G. LOWER, II
- ----------------------------
Louis G. Lower, II


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents that Samuel H. Pilch,  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ SAMUEL H. PILCH
- ----------------------------
Samuel H. Pilch


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents that Kevin R. Slawin,  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ KEVIN R. SLAWIN
- ----------------------------
Kevin R. Slawin


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents  that Casey J. Sylla,  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ CASEY J. SYLLA
- ----------------------------
Casey J. Sylla


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents  that  Timothy  N.  Vander  Pas,  whose
signature  appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and
Michael  J.  Velotta,  and each of them,  his  attorney-in-fact,  with  power of
substitution,  and  herein  any and all  capacities,  to sign  any  reports  and
amendments thereto for the Form N-4 for Glenbrook Life Discover Variable Account
(A) and to file  the  same,  with  exhibits  thereto  and  other  documents,  in
connection  therewith,  with the  Securities  and  Exchange  Commission,  hereby
ratifying  and  confirming  all  that  each  of said  attorneys-in-fact,  or his
substitute or substitutes, may do or cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ TIMOTHY N. VANDER PAS
- ----------------------------
Timothy N. Vander Pas


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these presents that Michael J. Velotta, whose signature
appears   below,   constitutes   and   appoints   Louis  G.   Lower,   II,   his
attorney-in-fact, with power of substitution, and herein any and all capacities,
to sign any reports and  amendments  thereto for the Form N-4 for Glenbrook Life
Discover  Variable  Account (A) and to file the same, with exhibits  thereto and
other  documents,  in connection  therewith,  with the  Securities  and Exchange
Commission,   hereby   ratifying   and   confirming   all  that   each  of  said
attorney-in-fact,  or his substitute or substitutes,  may do or cause to be done
by virtue hereof.

Date:  October 8, 1999

/s/ MICHAEL J. VELOTTA
- ----------------------------
Michael J. Velotta


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these presents that G. Craig Whitehead, whose signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ G. CRAIG WHITEHEAD
- ----------------------------
G. Craig Whitehead


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by  these  presents  that  Thomas  J.  Wilson,  II,  whose
signature  appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and
Michael  J.  Velotta,  and each of them,  his  attorney-in-fact,  with  power of
substitution,  and  herein  any and all  capacities,  to sign  any  reports  and
amendments thereto for the Form N-4 for Glenbrook Life Discover Variable Account
(A) and to file  the  same,  with  exhibits  thereto  and  other  documents,  in
connection  therewith,  with the  Securities  and  Exchange  Commission,  hereby
ratifying  and  confirming  all  that  each  of said  attorneys-in-fact,  or his
substitute or substitutes, may do or cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ THOMAS J. WILSON, II
- ----------------------------
Thomas J. Wilson, II


<PAGE>





                                Power of Attorney

  With Respect to the Glenbrook Life and Annuity Company Filing on Form N-4 for
                The Glenbrook Life Discover Variable Account (A)

         Know all men by these  presents  that  James P. Zils,  whose  signature
appears  below,  constitutes  and  appoints  Louis G. Lower,  II, and Michael J.
Velotta, and each of them, his attorney-in-fact, with power of substitution, and
herein any and all  capacities,  to sign any reports and amendments  thereto for
the Form N-4 for Glenbrook  Life Discover  Variable  Account (A) and to file the
same, with exhibits thereto and other documents,  in connection therewith,  with
the Securities and Exchange Commission, hereby ratifying and confirming all that
each of said  attorneys-in-fact,  or his  substitute or  substitutes,  may do or
cause to be done by virtue hereof.

Date:  October 8, 1999

/s/ JAMES P. ZILS
- ----------------------------
James P. Zils





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