NUVEEN TAX EXEMPT UNIT TRUST SERIES 763
497, 1994-11-03
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<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     NATIONAL
     INSURED
     TRUST 281
 
            Estimated Current Return
            First
            Year: 6.13% to 6.37%
            Subsequent
            Years: 6.15% to 6.39%
            as of 11/01/94
 
            Estimated Long Term Return
            6.23% to 6.48%
             75,000 units in a
             diversified $7,500,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6710A3 316 Monthly Payment Option
                  6710A3 324 Quarterly Payment Option
                  6710A3 332 Semi-Annual Payment Option
 
                  Registered in all states
                    John Nuveen & Co. Incorporated
                    Investment Bankers
 
<TABLE>
<S>                           <C>
Chicago:                      Atlanta
333 W. Wacker Dr.             Austin
Chicago, Illinois 60606       Boca Raton
Telephone: 312.917.7700       Boston
                              Columbus
New York:                     Dallas/Ft. Worth
Swiss Bank Tower              Irvine
10 East 50th Street           Philadelphia
New York, New York 10022      Phoenix
Telephone: 212.207.2000       San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, NATIONAL INSURED TRUST 281
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT NOVEMBER 2, 1994
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                             Ratings
                                                                                    Optional         -----------------------
  Aggregate            Name of Issuer and Title of Issue Represented               Redemption        Standard
  Principal               by Sponsor's Contracts to Purchase Bonds                 Provisions        & Poor's       Moody's
  <C>       <C> <S>                                                              <C>                 <C>           <C>
  --------------------------------------------------------------------------------------------------------------------------
  $  750,000    State Public Works Board of the State of California, Lease         2004 at 102          AAA           Aaa
                  Revenue Bonds (Department of Corrections), 1994 Series A
                  (California State Prison-Monterey County (Soledad II)),
                  6.875% Due 11/1/14. (When issued.)
     750,000    City of Tampa, Florida, Allegany Health System Revenue             2004 at 102          AAA           Aaa
                  Bonds, St. Joseph's Hospital, Inc. Issue, Series 1994,
                  6.50% Due 12/1/23. (When issued.)
     750,000    Board of Governors of State Colleges and Universities              2004 at 102          AAA           Aaa
                  (Illinois), Eastern Illinois University, Auxiliary
                  Facilities System Revenue Bonds, Series 1994A, 6.375% Due
                  4/1/16.
   1,000,000    Metropolitan Pier and Exposition Authority (Illinois),             2003 at 102          AAA           Aaa
                  McCormick Place Expansion Project Bonds, Series 1992A,
                  6.50% Due 6/15/22.
     750,000    The Pollution Control Financing Authority of Salem County          2004 at 102          AAA           Aaa
                  (New Jersey), Pollution Control Revenue Refunding Bonds,
                  1994 Series D (Public Service Electric and Gas Company
                  Project), 6.55% Due 10/1/29.
     500,000    Wayne County Hospital and Health Facilities Authority, Wayne       2004 at 100          AAA           Aaa
                  County, Pennsylvania, County Guaranteed Hospital Revenue
                  Bonds, Series of 1994 (Wayne Memorial Hospital Project),
                  6.375% Due 7/1/24. (General Obligation Bonds.)
     750,000    The Health, Educational and Housing Facilities Board of the        2003 at 102          AAA           Aaa
                  County of Sullivan, Tennessee, Hospital Revenue Bonds,
                  Series 1993 (Holston Valley Health Care, Inc.), 5.75% Due
                  2/15/20.
     750,000    Harris County, Texas, Toll Road Senior Lien Revenue Bonds,         2004 at 102          AAA           Aaa
                  Series 1994A, 6.375% Due 8/15/24. (When issued.)
     750,000    King County, Washington, Department of Metropolitan                2004 at 102          AAA           Aaa
                  Services, General Obligation Sewer Revenue Bonds, 1994
                  Series A, 6.25% Due 1/1/34.
     750,000    Washington Public Power Supply System, Nuclear Project No. 2       2003 at 102          AAA           Aaa
                  Refunding Revenue Bonds, Series 1993A, 5.75% Due 7/1/12.
  ----------
  $7,500,000
  ----------
  ----------
</TABLE>
 
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION    The sales charges/volume discounts below
apply on all concurrent purchases of any Nuveen trust units, unless any such
purchases are made by a class of investors for which a separate sales charge is
applicable as described more fully in the Prospectus. Estimated Current Return
equals net income divided by offering price. Estimated Long Term Return
represents an average of the yields to maturity (or call) of the Bonds in the
Trust adjusted to reflect expenses and sales charges.
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                              Estimated Current Return (2)
          AMOUNT PURCHASED                         Public      -----------------------------------------------------------
- -------------------------------------  Sales      Offering         Monthly           Quarterly            Semi-Annual
     Units              Dollars        Charge     Price (1)        Payment            Payment               Payment
- ----------------  -------------------  ------    -----------   ---------------    ---------------    ---------------------
<S>               <C>                  <C>       <C>           <C>       <C>      <C>       <C>      <C>       <C>
50-499                 $5,000-$49,999   4.90 %   $     99.37     (6.13%)  6.15%     (6.17%)  6.18%     (6.18%)  6.20%
500-999                 50,000-99,999   4.75           99.21     (6.14)   6.16      (6.18)   6.19      (6.19)   6.21
1,000-2,499           100,000-249,999   4.50           98.95     (6.16)   6.17      (6.19)   6.21      (6.21)   6.22
2,500-4,999           250,000-499,999   4.25           98.69     (6.18)   6.19      (6.21)   6.22      (6.23)   6.24
5,000-9,999           500,000-999,999   3.50           97.93     (6.22)   6.24      (6.26)   6.27      (6.28)   6.29
10,000-24,999     1,000,000-2,499,999   3.00           97.42     (6.26)   6.27      (6.29)   6.30      (6.31)   6.32
25,000-49,999     2,500,000-4,999,999   2.50           96.92     (6.29)   6.30      (6.32)   6.34      (6.34)   6.35
50,000 and over    5,000,000 and over   2.00           96.43     (6.32)   6.33      (6.35)   6.37      (6.37)   6.39
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         Estimated Long Term Return (3)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $     99.37          6.23%            6.27%            6.29%
500-999                 50,000-99,999   4.75           99.21          6.24             6.27             6.29
1,000-2,499           100,000-249,999   4.50           98.95          6.26             6.29             6.31
2,500-4,999           250,000-499,999   4.25           98.69          6.27             6.31             6.33
5,000-9,999           500,000-999,999   3.50           97.93          6.32             6.36             6.38
10,000-24,999     1,000,000-2,499,999   3.00           97.42          6.35             6.39             6.41
25,000-49,999     2,500,000-4,999,999   2.50           96.92          6.39             6.43             6.45
50,000 and over    5,000,000 and over   2.00           96.43          6.42             6.46             6.48
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(1) As of the business day prior to the Date of Deposit. Units are offered at
    the Public Offering Price plus accrued interest.
(2) All figures as of the business day prior to the Date of Deposit. Figures in
    brackets represent the current return. The first year's estimated current
    returns are slightly lower than those for subsequent years because a portion
    of the monies received in the first year only will be treated as a return of
    principal due to the inclusion in the portfolio of "when issued" or other
    Bonds having delivery dates after the date of settlement for a purchase made
    on the Date of Deposit.
(3) In contrast to Estimated Current Return, Estimated Long Term Return reflects
    the amortization of premium or accretion of discount, if any, on the bonds
    in the Trust's portfolio.
 
- --------------------------------------------------------------------------------
 
REINVESTMENT OPTIONS   Specify automatic reinvestment of trust income, with no
sales charge, to earn compounded dividends with Nuveen mutual funds.
- --------------------------------------------------------------------------------
 
INTEREST DISTRIBUTIONS TO UNITHOLDERS   Unitholders may elect to have interest
distributions made on a monthly, quarterly, or semi-annual basis. Record Dates
are May 1 and November 1 for semi-annual distributions; February 1, May 1,
August 1 and November 1 for quarterly distributions; and the first of each month
for monthly distributions. Details of interest distributions per unit under the
various plans appear in the following table based upon estimated net annual
interest income at the Date of Deposit:
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                                       Normal
                                                                                                                   Distributions
National Insured Trust                    1994                                  1995                                 per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>            <C>
- -------------------------------------------------------------------------------------------------------------      --------------
Record Date*..........................       12/1            2/1            5/1            8/1           11/1
Distribution Date.....................      12/15           2/15           5/15           8/15          11/15
- ---------------------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .4918(1)                                                               $  6.1081
                                                             --------    $.5088 every month    --------
Quarterly Distribution Plan...........  $   .4918(1)   $  1.0230(2)   $  1.5345      $  1.5345      $  1.5345      $  6.1401
Semi-Annual Distribution Plan.........  $   .4918(1)                  $  2.5650(3)                  $  3.0780      $  6.1591
- ---------------------------------------------------------------------------------------------------------------------------------
<FN>
  * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May 1,
    August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
</TABLE>
<PAGE>
<TABLE>
<S>         <C>
(1) The first distribution will be paid to all Unitholders, regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) The second distribution under the quarterly distribution plan represents a 2-month distribution; subsequent quarterly
    distributions will be regular 3-month distributions.
(3) The second distribution under the semi-annual distribution plan represents a 5-month distribution; subsequent semi-annual
    distributions will be regular 6-month distributions.
</TABLE>
 
+ Interest for Unitholders of this series began to accrue as of the Date of
Deposit. Units purchased on the Date of Deposit will have $.12 of accrued
interest that will be added to the Public Offering Price on the Settlement Date.
After provision for expenses of the Fund, the daily rate of accrual from the
Date of Deposit to the first Record Date is $.01696 per unit per day.
Consequently, on the first Record Date (12/01/94), accrued interest will total
$0.4918 per unit for the 29-day period. All interest accrued from the Date of
Deposit to the first Record Date, less expenses, will be distributed on the
first Distribution Date to Unitholders of Record as of the first Record Date.
The first payment to all Unitholders of Record on 12/01/94 is $.4918 per unit.
After the first Record Date daily rates of accrual are:
              Monthly - $0.01696              Quarterly - $0.01705
                             Semi-Annual - $0.01710
This daily rate of accrual, and the annual distributions shown above, will
remain the same as long as the portfolio size and composition remain the same.
 
- --------------------------------------------------------------------------------
<PAGE>
- -------------------------------------------------
 
DIVERSIFICATION OF PORTFOLIO INCOME
 
There are 10 Tax-exempt bond issues in this trust; this diversified portfolio
yields current income from issuers in 8 states.
- -------------------------------------------------------
<TABLE>
<CAPTION>
                   Percent
                   of Total
                   Income
<S>                    <C>        <C>
- ------------------------
                                  %
California                  10.9
Florida                     10.3
Illinois                    23.7
New Jersey                  10.3
 
<CAPTION>
                   Percent
                   of Total
                   Income
- ------------------------
<S>                    <C>        <C>
                                  %
Pennsylvania                 6.7
Tennessee                    9.1
Texas                       10.1
Washington                  18.9
</TABLE>
 
- -------------------------------------------------
 
AVERAGE PORTFOLIO LIFE The average maturity
of portfolio bonds is 27.4 years. The first bond is scheduled to mature in July,
2012, with the last bond maturity being January, 2034.
 
- -------------------------------------------------
 
BONDS INSURED BY MBIA   Each bond in this Nuveen Insured series has been
insured* by the Municipal Bond Investors Assurance Corporation, which guarantees
timely payments of principal and interest. Premium payments have been fully paid
by the Date of Deposit.
 
- -------------------------------------------------
 
CALL PROTECTION   Bonds are first subject to optional redemption by the issuers
in the years and at the prices shown under the Redemption Provisions column in
the Schedule of Investments. Unless otherwise stated, in subsequent years, bonds
are redeemable at declining prices, but not usually below par value. Some issues
or some portions of issues may also be subject to sinking fund redemption or
extraordinary redemption without premium prior to the dates shown.
 
- -------------------------------------------------
 
UNITS OF THE TRUST ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK AND ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY AND
INVOLVE INVESTMENT RISK, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
 
- -------------------------------------------------
 
* Insurance relates specifically to the bonds and not to the units or to the
  market value of units. Terms of the insurance are more fully described in the
  prospectus. No representation is made as to the insurer's ability to meet its
  commitments. See Section 5 of the prospectus for details.
 
- -------------------------------------------------------
 
FOR A PROSPECTUS CONTAINING MORE COMPLETE INFORMATION, INCLUDING CHARGES AND
EXPENSES, ON THIS NUVEEN TAX-EXEMPT UNIT TRUST AND ANY OTHER NUVEEN FUND, CALL
YOUR BROKER . . . OR NUVEEN AT
 
                                 1-800-257-8787
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
 
763
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     FLORIDA
     INSURED
     TRUST 199
 
            Estimated Current Return
            First
            Year: 5.94% to 6.18%
            Subsequent
            Years: 5.96% to 6.19%
            as of 11/01/94
 
            Estimated Long Term Return
            6.09% to 6.33%
             35,000 units in a
             diversified $3,500,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6706H3 556 Monthly Payment Option
                  6706H3 564 Quarterly Payment Option
                  6706H3 572 Semi-Annual Payment Option
 
                  Registered in Florida
                    John Nuveen & Co. Incorporated
                    Investment Bankers
 
<TABLE>
<S>                           <C>
Chicago:                      Atlanta
333 W. Wacker Dr.             Austin
Chicago, Illinois 60606       Boca Raton
Telephone: 312.917.7700       Boston
                              Columbus
New York:                     Dallas/Ft. Worth
Swiss Bank Tower              Irvine
10 East 50th Street           Philadelphia
New York, New York 10022      Phoenix
Telephone: 212.207.2000       San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, FLORIDA INSURED TRUST 199
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT NOVEMBER 2, 1994
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                             Ratings
                                                                                    Optional         -----------------------
  Aggregate            Name of Issuer and Title of Issue Represented               Redemption        Standard
  Principal               by Sponsor's Contracts to Purchase Bonds                 Provisions        & Poor's       Moody's
  <C>       <C> <S>                                                              <C>                 <C>           <C>
  --------------------------------------------------------------------------------------------------------------------------
  $  500,000    State Board of Education of Florida, Public Education              2004 at 101          AAA           Aaa
                  Capital Outlay Bonds, 1993 Series E, 5.80% Due 6/1/24.
                  (General Obligation Bonds.)
     500,000    Hillsborough County Aviation Authority, Florida, Tampa             2003 at 102          AAA           Aaa
                  International Airport Revenue Refunding Bonds, 1993 Series
                  B, 5.60% Due 10/1/19.
     500,000    Lee County, Florida, Capital and Transportation Facilities         2003 at 102          AAA           Aaa
                  Refunding Revenue Bonds, Series 1993A, 5.60% Due 10/1/21.
     500,000    Orange County, Florida, Tourist Development Tax Revenue            2004 at 102          AAA           Aaa
                  Bonds, Series 1994B, 6.00% Due 10/1/14.
     485,000    South Broward Hospital District (Florida), Hospital Revenue        2003 at 102          AAA           Aaa
                  and Refunding Revenue Bonds, Series 1993, 5.50% Due
                  5/1/28.
     515,000    City of Tampa, Florida, Allegany Health System Revenue             2004 at 102          AAA           Aaa
                  Bonds, St. Joseph's Hospital, Inc. Issue, Series 1994,
                  6.50% Due 12/1/23. (When issued.)
     500,000    Commonwealth of Puerto Rico, Public Improvement Bonds of           2004 at 101          AAA           Aaa
                  1994 (General Obligation Bonds), 6.50% Due 7/1/23.                   1/2
  ----------
  $3,500,000
  ----------
  ----------
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION    The sales charges/volume discounts below
apply on all concurrent purchases of any Nuveen trust units, unless any such
purchases are made by a class of investors for which a separate sales charge is
applicable as described more fully in the Prospectus. Estimated Current Return
equals net income divided by offering price. Estimated Long Term Return
represents an average of the yields to maturity (or call) of the Bonds in the
Trust adjusted to reflect expenses and sales charges.
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                              Estimated Current Return (2)
          AMOUNT PURCHASED                         Public      -----------------------------------------------------------
- -------------------------------------  Sales      Offering         Monthly           Quarterly            Semi-Annual
     Units              Dollars        Charge     Price (1)        Payment            Payment               Payment
- ----------------  -------------------  ------    -----------   ---------------    ---------------    ---------------------
<S>               <C>                  <C>       <C>           <C>       <C>      <C>       <C>      <C>       <C>
50-499                 $5,000-$49,999   4.90 %   $     95.65     (5.94%)  5.96%     (5.97%)  5.99%     (5.99%)  6.01%
500-999                 50,000-99,999   4.75           95.50     (5.95)   5.97      (5.98)   6.00      (6.00)   6.02
1,000-2,499           100,000-249,999   4.50           95.25     (5.97)   5.98      (6.00)   6.01      (6.02)   6.03
2,500-4,999           250,000-499,999   4.25           95.00     (5.98)   6.00      (6.01)   6.03      (6.03)   6.05
5,000-9,999           500,000-999,999   3.50           94.26     (6.03)   6.04      (6.06)   6.08      (6.08)   6.10
10,000-24,999     1,000,000-2,499,999   3.00           93.77     (6.06)   6.08      (6.09)   6.11      (6.11)   6.13
25,000-49,999     2,500,000-4,999,999   2.50           93.29     (6.09)   6.11      (6.12)   6.14      (6.15)   6.16
50,000 and over    5,000,000 and over   2.00           92.82     (6.12)   6.14      (6.16)   6.17      (6.18)   6.19
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         Estimated Long Term Return (3)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $     95.65          6.09%            6.12%            6.14%
500-999                 50,000-99,999   4.75           95.50          6.09             6.13             6.15
1,000-2,499           100,000-249,999   4.50           95.25          6.11             6.15             6.17
2,500-4,999           250,000-499,999   4.25           95.00          6.13             6.16             6.18
5,000-9,999           500,000-999,999   3.50           94.26          6.18             6.22             6.23
10,000-24,999     1,000,000-2,499,999   3.00           93.77          6.21             6.25             6.27
25,000-49,999     2,500,000-4,999,999   2.50           93.29          6.24             6.28             6.30
50,000 and over    5,000,000 and over   2.00           92.82          6.27             6.31             6.33
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(1) As of the business day prior to the Date of Deposit. Units are offered at
    the Public Offering Price plus accrued interest.
(2) All figures as of the business day prior to the Date of Deposit. Figures in
    brackets represent the current return. The first year's estimated current
    returns are slightly lower than those for subsequent years because a portion
    of the monies received in the first year only will be treated as a return of
    principal due to the inclusion in the portfolio of "when issued" or other
    Bonds having delivery dates after the date of settlement for a purchase made
    on the Date of Deposit.
(3) In contrast to Estimated Current Return, Estimated Long Term Return reflects
    the amortization of premium or accretion of discount, if any, on the bonds
    in the Trust's portfolio.
 
- --------------------------------------------------------------------------------
 
INTEREST DISTRIBUTIONS TO UNITHOLDERS   Unitholders may elect to have interest
distributions made on a monthly, quarterly, or semi-annual basis. Record Dates
are May 1 and November 1 for semi-annual distributions; February 1, May 1,
August 1 and November 1 for quarterly distributions; and the first of each month
for monthly distributions. Details of interest distributions per unit under the
various plans appear in the following table based upon estimated net annual
interest income at the Date of Deposit:
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                                       Normal
                                                                                                                   Distributions
Florida Insured Trust                     1994                                  1995                                 per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>            <C>
- -------------------------------------------------------------------------------------------------------------      --------------
Record Date*..........................       12/1            2/1            5/1            8/1           11/1
Distribution Date.....................      12/15           2/15           5/15           8/15          11/15
- ---------------------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .4587(1)                                                               $  5.6970
                                                             --------    $.4746 every month    --------
Quarterly Distribution Plan...........  $   .4587(1)   $   .9546(2)   $  1.4319      $  1.4319      $  1.4319      $  5.7290
Semi-Annual Distribution Plan.........  $   .4587(1)                  $  2.3940(3)                  $  2.8728      $  5.7480
- ---------------------------------------------------------------------------------------------------------------------------------
<FN>
  * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May 1,
    August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1) The first distribution will be paid to all Unitholders, regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) The second distribution under the quarterly distribution plan represents a 2-month distribution; subsequent quarterly
    distributions will be regular 3-month distributions.
(3) The second distribution under the semi-annual distribution plan represents a 5-month distribution; subsequent semi-annual
    distributions will be regular 6-month distributions.
</TABLE>
 
+ Interest for Unitholders of this series began to accrue as of the Date of
Deposit. Units purchased on the Date of Deposit will have $.11 of accrued
interest that will be added to the Public Offering Price on the Settlement Date.
After provision for expenses of the Fund, the daily rate of accrual from the
Date of Deposit to the first Record Date is $.01582 per unit per day.
Consequently, on the first Record Date (12/01/94), accrued interest will total
$0.4587 per unit for the 29-day period. All interest accrued from the Date of
Deposit to the first Record Date, less expenses, will be distributed on the
first Distribution Date to Unitholders of Record as of the first Record Date.
The first payment to all Unitholders of Record on 12/01/94 is $.4587 per unit.
After the first Record Date daily rates of accrual are:
              Monthly - $0.01582              Quarterly - $0.01591
                             Semi-Annual - $0.01596
This daily rate of accrual, and the annual distributions shown above, will
remain the same as long as the portfolio size and composition remain the same.
 
- --------------------------------------------------------------------------------
 
                                                          763
<PAGE>
- -------------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 27.5 years.
The first bond is scheduled to mature in October, 2014, with the last bond
maturity being May, 2028.
 
- -------------------------------------------------------
 
BONDS INSURED BY MBIA   Each bond in this Nuveen Insured series has been
insured* by the Municipal Bond Investors Assurance Corporation, which guarantees
timely payments of principal and interest. Premium payments have been fully paid
by the Date of Deposit.
 
- -------------------------------------------------------
 
CALL PROTECTION   Bonds are first subject to optional redemption by the issuers
in the years and at the prices shown under the Redemption Provisions column in
the Schedule of Investments. Unless otherwise stated, in subsequent years, bonds
are redeemable at declining prices, but not usually below par value. Some issues
or some portions of issues may also be subject to sinking fund redemption or
extraordinary redemption without premium prior to the dates shown.
 
- -------------------------------------------------------
 
NO CHARGE FOR REDEMPTION   The Trustee, United States Trust Company of New York,
will redeem units at net asset value. In addition, John Nuveen & Co.
Incorporated intends to maintain a secondary market for this Nuveen Tax-Exempt
Unit Trust. Inasmuch as all securities investments are subject to market price
fluctuation, net asset value at the time of redemption could be more or less
than the initial investment.
 
- -------------------------------------------------------
 
REINVESTMENT OPTIONS   Specify automatic reinvestment of trust income, with no
sales charge, to earn compounded dividends with Nuveen mutual funds.
 
- -------------------------------------------------------
 
UNITS OF THE TRUST ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK AND ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY AND
INVOLVE INVESTMENT RISK, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
 
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* Insurance relates specifically to the bonds and not to the units or to the
  market value of units. Terms of the insurance are more fully described in the
  prospectus. No representation is made as to the insurer's ability to meet its
  commitments. See Section 5 of the prospectus for details.
 
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FOR A PROSPECTUS CONTAINING MORE COMPLETE INFORMATION, INCLUDING CHARGES AND
EXPENSES, ON THIS NUVEEN TAX-EXEMPT UNIT TRUST AND ANY OTHER NUVEEN FUND, CALL
YOUR BROKER . . . OR NUVEEN AT
 
                                 1-800-257-8787
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.


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