NUVEEN TAX EXEMPT UNIT TRUST SERIES 721
497, 1994-03-25
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<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
      NORTH CAROLINA
     TRUST 274
              (NORTH CAROLINA TRADITIONAL TRUST 274)
 
            Estimated Current Return
            5.24% to 5.40%
            as of 03/23/94
 
            Estimated Long Term Return
            5.31% to 5.47%
             35,000 units in a
             diversified $3,500,000
             portfolio of tax-exempt
             bonds
                  Cusip:
                  670958 701 Monthly Payment Option
                  670958 719 Quarterly Payment Option
                  670958 727 Semi-Annual Payment Option
 
                  Registered in North Carolina
                    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--NORTH CAROLINA TRADITIONAL TRUST 274
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT MARCH 24, 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    North Carolina Municipal Power Agency Number 1, Catawba            2003 at 100          AAA           Aaa
                  Electric Revenue Bonds, Series 1992, 5.75% Due 1/1/20.
                  (Original issue discount bonds delivered on or about
                  December 10, 1992 at a price of 92.75% of principal
                  amount.)(MBIA Insured.)
     500,000    Metropolitan Sewerage District of Buncombe County (North           2003 at 102          AAA           Aaa
                  Carolina), Sewerage System Revenue Refunding Bonds, Series
                  1993A, 5.50% Due 7/1/22. (FGIC Insured.)
     500,000    County of Catawba, North Carolina, Hospital Revenue Bonds          2002 at 102          AAA           Aaa
                  (Catawba Memorial Hospital Project), Series 1992, 6.00%
                  Due 10/1/17. (AMBAC Insured.)
     425,000    City of Charlotte, North Carolina, General Obligation Bonds,       2003 at 102          AAA           Aaa
                  Water and Sewer Bonds, Series 1993, 5.25% Due 2/1/11.
     500,000    City of Charlotte, North Carolina, Refunding Certificates of       2003 at 102          AAA           Aaa
                  Participation (Convention Facility Project), Series 1993C,
                  5.25% Due 12/1/20. (Original issue discount bonds
                  delivered on or about August 25, 1993 at a price of
                  93.801% of principal amount.)(AMBAC Insured.)
     500,000    County of Cumberland, North Carolina, Hospital Facility            2003 at 100          AAA           Aaa
                  Revenue Refunding Bonds (Cumberland County Hospital
                  System, Inc.), Series 1993, 5.50% Due 10/1/14. (MBIA
                  Insured.)
     500,000    County of New Hanover, North Carolina Hospital Revenue Bonds       2003 at 102          AAA           Aaa
                  (New Hanover Regional Medical Center Project), Series
                  1993, 4.75% Due 10/1/23. (Original issue discount bonds
                  delivered on or about October 26, 1993 at a price of
                  92.775% of principal amount.)(AMBAC Insured.)
      75,000    Commonwealth of Puerto Rico, Public Improvement Bonds of           2002 at 101          AAA           Aaa
                  1993 (General Obligation Bonds.), 5.875% Due 7/1/18.                 1/2
                  (AMBAC Insured.)
  ----------
  $3,500,000
  ----------
  ----------
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION
Sales charge/volume discount applies on all concurrent purchases of any Nuveen
trust units. 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>
50-999                 $5,000-$99,999   4.90 %   $    100.56          5.24%            5.27%            5.29%
1,000-2,499           100,000-249,999   4.50          100.14          5.26             5.30             5.31
2,500-4,999           250,000-499,999   4.25           99.87          5.28             5.31             5.33
5,000-9,999           500,000-999,999   3.50           99.10          5.32             5.35             5.37
10,000 and over    1,000,000 and over   3.00           98.59          5.35             5.38             5.40
</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>
50-999                 $5,000-$99,999   4.90 %   $    100.56          5.31%            5.35%            5.36%
1,000-2,499           100,000-249,999   4.50          100.14          5.33             5.37             5.39
2,500-4,999           250,000-499,999   4.25           99.87          5.34             5.38             5.40
5,000-9,999           500,000-999,999   3.50           99.10          5.39             5.42             5.44
10,000 and over    1,000,000 and over   3.00           98.59          5.41             5.45             5.47
</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 Date of Deposit. The estimated
    current return for purchases made on such date will be as shown, as long as
    the portfolio size and composition remain the same.
(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
North Carolina Traditional Trust                         1994                                  1995                  per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>            <C>
- -------------------------------------------------------------------------------------------------------------      --------------
Record Date*..........................        6/1            8/1           11/1            2/1            5/1
Distribution Date.....................       6/15           8/15          11/15           2/15           5/15
- ---------------------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2613(1)                                                               $  5.2709
                                                             --------    $.4392 every month    --------
Quarterly Distribution Plan...........  $   .2613(1)   $   .8838(2)   $  1.3257      $  1.3257      $  1.3257      $  5.3029
Semi-Annual Distribution Plan.........  $   .2613(1)                  $  2.2174(3)                  $  2.6609      $  5.3219
- ---------------------------------------------------------------------------------------------------------------------------------
<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.
(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 $.10 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 $.01464 per unit per day.
Consequently, on the first Record Date (06/01/94), accrued interest will total
$0.9808 per unit for the 67-day period. Because a substantial portion of this
interest will not yet be due from the issuers of the bonds in the Fund, the
first payment to all Unitholders of Record on 06/01/94 is $.2613, and the
remaining $.7195 of accrued interest will remain an asset of the Trust and be
distributed in subsequent periods as portfolio bonds mature, or are redeemed, or
sold and the accrued interest on these bonds is collected. After the first
Record Date daily rates of accrual are:
              Monthly - $0.01464              Quarterly - $0.01473
                             Semi-Annual - $0.01478
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.
 
- --------------------------------------------------------------------------------
 
                                                          721
<PAGE>
- -------------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 24.6 years.
The first bond is scheduled to mature in February, 2011, with the last bond
maturity being October, 2023.
 
- -------------------------------------------------
 
QUALITY OF PORTFOLIO AS RATED BY
STANDARD & POOR'S CORPORATION
OR MOODY'S INVESTORS SERVICES
- -------------------------------------------------
 
<TABLE>
<CAPTION>
       Rating          Percent of Portfolio
      Category              Par Value
<S>                    <C>                   <C>
- -------------------------------------------------------------
AAA                        100%
                           ---
                           100%
</TABLE>
 
- -------------------------------------------------
 
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.
 
- -------------------------------------------------
 
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
 
                                 1-800-351-4100
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     VIRGINIA
     TRUST 284
              (VIRGINIA TRADITIONAL TRUST 284)
 
            Estimated Current Return
            5.44% to 5.60%
            as of 03/23/94
 
            Estimated Long Term Return
            5.52% to 5.68%
             35,000 units in a
             diversified $3,500,000
             portfolio of tax-exempt
             bonds
                  Cusip:
                  6706L5 226 Monthly Payment Option
                  6706L5 234 Quarterly Payment Option
                  6706L5 242 Semi-Annual Payment Option
 
                  Registered in Virginia
                    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--VIRGINIA TRADITIONAL TRUST 284
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT MARCH 24, 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    Virginia Resources Authority, Sewer System Revenue Bonds           2003 at 100          AA            --
                  (Harrisonburg-Rockingham Regional Sewer Authority
                  Project), 1992 Series A, 6.00% Due 5/1/22.
     500,000    Commonwealth Transportation Board, Commonwealth of Virginia,       2003 at 102          AA            Aa
                  Transportation Revenue Bonds, Series 1993B (U.S. Route 58
                  Corridor Development Program), 5.50% Due 5/15/18.
     525,000    Industrial Development Authority of Albemarle County,              2003 at 102          --             A
                  Virginia, Hospital Refunding Revenue Bonds (Martha
                  Jefferson Hospital), Series 1993, 5.50% Due 10/1/20.
                  (Original issue discount bonds delivered on or about July
                  1, 1993 at a price of 93.313% of principal amount.)
     475,000    Industrial Development Authority of Fairfax County,                No Optional          AA-           Aa
                  Virginia, Hospital Revenue Refunding Bonds (Inova Health            Call
                  System Hospitals Project), Series 1993A, 5.00% Due
                  8/15/23. (Original issue discount bonds delivered on or
                  about November 3, 1993 at a price of 94.807% of principal
                  amount.)
     500,000    Fairfax County (Virginia), Water Authority, Water Refunding        2002 at 100          AA-           Aa
                  Revenue Bonds, Series 1992, 5.75% Due 4/1/29. (Original
                  issue discount bonds delivered on or about December 8,
                  1992 at a price of 92.25% of principal amount.)
     500,000    Industrial Development Authority of the Town of Louisa,            2004 at 102           A            A2
                  Virginia, Pollution Control Revenue Bonds (Virginia
                  Electric and Power Company Project), Series 1994, 5.45%
                  Due 1/1/24.
     500,000    Richmond Metropolitan Authority (Virginia), Expressway             2002 at 100          AAA           Aaa
                  Revenue and Refunding Bonds, Series 1992-A, 5.75% Due
                  7/15/22. (Original issue discount bonds delivered on or
                  about June 9, 1992 at a price of 91.375% of principal
                  amount.)(FGIC Insured.)
  ----------
  $3,500,000
  ----------
  ----------
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION
Sales charge/volume discount applies on all concurrent purchases of any Nuveen
trust units. 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>
50-999                 $5,000-$99,999   4.90 %   $     99.26          5.44%            5.47%            5.49%
1,000-2,499           100,000-249,999   4.50           98.85          5.46             5.49             5.51
2,500-4,999           250,000-499,999   4.25           98.59          5.47             5.51             5.53
5,000-9,999           500,000-999,999   3.50           97.82          5.52             5.55             5.57
10,000 and over    1,000,000 and over   3.00           97.32          5.55             5.58             5.60
</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>
50-999                 $5,000-$99,999   4.90 %   $     99.26          5.52%            5.55%            5.57%
1,000-2,499           100,000-249,999   4.50           98.85          5.54             5.58             5.60
2,500-4,999           250,000-499,999   4.25           98.59          5.55             5.59             5.61
5,000-9,999           500,000-999,999   3.50           97.82          5.60             5.64             5.66
10,000 and over    1,000,000 and over   3.00           97.32          5.63             5.67             5.68
</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 Date of Deposit. The estimated
    current return for purchases made on such date will be as shown, as long as
    the portfolio size and composition remain the same.
(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
Virginia Traditional Trust                               1994                                  1995                  per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>            <C>
- -------------------------------------------------------------------------------------------------------------      --------------
Record Date*..........................        6/1            8/1           11/1            2/1            5/1
Distribution Date.....................       6/15           8/15          11/15           2/15           5/15
- ---------------------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2860(1)                                                               $  5.3968
                                                             --------    $.4497 every month    --------
Quarterly Distribution Plan...........  $   .2860(1)   $   .9047(2)   $  1.3571      $  1.3571      $  1.3571      $  5.4288
Semi-Annual Distribution Plan.........  $   .2860(1)                  $  2.2699(3)                  $  2.7238      $  5.4478
- ---------------------------------------------------------------------------------------------------------------------------------
<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.
(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 $.10 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 $.01499 per unit per day.
Consequently, on the first Record Date (06/01/94), accrued interest will total
$1.0043 per unit for the 67-day period. Because a substantial portion of this
interest will not yet be due from the issuers of the bonds in the Fund, the
first payment to all Unitholders of Record on 06/01/94 is $.2860, and the
remaining $.7183 of accrued interest will remain an asset of the Trust and be
distributed in subsequent periods as portfolio bonds mature, or are redeemed, or
sold and the accrued interest on these bonds is collected. After the first
Record Date daily rates of accrual are:
              Monthly - $0.01499              Quarterly - $0.01508
                             Semi-Annual - $0.01513
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.
 
- --------------------------------------------------------------------------------
 
                                                          721
<PAGE>
- -------------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 28.7 years.
The first bond is scheduled to mature in May, 2018, with the last bond maturity
being April, 2029.
 
- -------------------------------------------------
 
QUALITY OF PORTFOLIO AS RATED BY
STANDARD & POOR'S CORPORATION
OR MOODY'S INVESTORS SERVICES
- -------------------------------------------------
 
<TABLE>
<CAPTION>
       Rating          Percent of Portfolio
      Category              Par Value
<S>                    <C>                   <C>
- -------------------------------------------------------------
AAA                         14%
AA                          57
A                           29
                           ---
                           100%
</TABLE>
 
- -------------------------------------------------
 
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.
 
- -------------------------------------------------
 
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
 
                                 1-800-351-4100
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     SHORT INTERMEDIATE
     INSURED
     TRUST 29
 
            Estimated Current Return
            First
            Year: 4.15% to 4.25%
            Subsequent
            Years: 4.16% to 4.26%
            as of 03/23/94
 
            Estimated Long Term Return
            4.38% to 4.47%
             100,000 units in a
             diversified $10,000,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6710A0 163 Monthly Payment Option
                  6710A0 171 Quarterly Payment Option
                  6710A0 189 Semi-Annual Payment Option
 
                  Registered in all states
                    John Nuveen & Co. Incorporated
                    Investment Bankers
<PAGE>
 
<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           Los Angeles
New York, New York 10022      Philadelphia
Telephone: 212.207.2000       Phoenix
                              San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, SHORT INTERMEDIATE INSURED TRUST 29
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT MARCH 24, 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>
  --------------------------------------------------------------------------------------------------------------------------
  $1,000,000    Municipality of Anchorage, Alaska, 1993 General Obligation         No Optional          AAA           Aaa
                  Refunding General Purpose Bonds, Series B, 4.25% Due                Call
                  8/1/98.
   1,500,000    City of Tucson, Arizona, Junior Lien Street and Highway User       No Optional          AAA           Aaa
                  Revenue Refunding Bonds, Series 1993, 4.60% Due 7/1/99.             Call
     500,000    San Diego County Water Authority (California), Water Revenue       No Optional          AAA           Aaa
                  Refunding Certificates of Participation, Series 1993A,              Call
                  4.90% Due 5/1/99.
   1,000,000    State of California, Various Purpose, General Obligation           No Optional          AAA           Aaa
                  Bonds, 4.70% Due 3/1/99.                                            Call
   1,000,000    City of Tampa, Florida, Allegany Health System Revenue             No Optional          AAA           Aaa
                  Bonds, St. Mary's Hospital, Inc. Issue, Series 1993, 3.95%          Call
                  Due 12/1/98.
   1,000,000    Public Building Commission of Chicago (Illinois), Building         No Optional          AAA           Aaa
                  Revenue Bonds, Series A of 1993 (Board of Education of the          Call
                  City of Chicago), 4.70% Due 12/1/99. (General Obligation
                  Bonds.)
   1,000,000    Parish School Board of the Parish of Jefferson, State of           No Optional          AAA           Aaa
                  Louisiana, Sales Tax School Bonds, Refunding Series 1994,           Call
                  4.20% Due 2/1/99.
     200,000    New Jersey Wastewater Treatment Trust, Wastewater Treatment        No Optional          AAA           Aaa
                  Refunding Bonds, Series 1994A, 0.00% Due 9/1/98. (Original          Call
                  issue discount bonds will be delivered on or about March
                  31, 1994 at a price of 81.615% of principal amount.)(When
                  issued.)
     200,000    Dormitory Authority of the State of New York, State                No Optional          AAA           Aaa
                  University Educational Facilities Revenue Bonds, Series             Call
                  1994A, 0.00% Due 5/15/99. (Original issue discount bonds
                  delivered on or about March 3, 1994 at a price of 80.767%
                  of principal amount.)
   1,000,000    Hospital Facility Authority of the Western Lane Hospital           No Optional          AAA           Aaa
                  District (Oregon), Revenue Refunding Bonds, Series 1994,            Call
                  (Sisters of St. Joseph of Peace, Health and Hospital
                  Services), 4.75% Due 8/1/99. (When issued.)
     600,000    Washington Public Power Supply System, Nuclear Project No. 1       No Optional          AAA           Aaa
                  Refunding Revenue Bonds, Series 1993A, 4.625% Due 7/1/98.           Call
   1,000,000    Wisconsin Health and Educational Facilities Authority,             No Optional          AAA           Aaa
                  Revenue Bonds, Series 1992 (Marquette University Project),          Call
                  5.30% Due 12/1/98.
  ----------
  $10,000,000
  ----------
  ----------
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION
Sales charge/volume discount applies on all concurrent purchases of any Nuveen
trust units. 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>
50-999                 $5,000-$99,999   3.00 %   $    101.94     (4.15%)  4.16%     (4.18%)  4.19%     (4.20%)  4.21%
1,000-2,499           100,000-249,999   2.60          101.52     (4.17)   4.18      (4.20)   4.21      (4.22)   4.23
2,500-4,999           250,000-499,999   2.35          101.26     (4.18)   4.19      (4.21)   4.22      (4.23)   4.24
5,000-9,999           500,000-999,999   2.10          101.00     (4.19)   4.20      (4.22)   4.23      (4.24)   4.25
10,000 and over    1,000,000 and over   1.85          100.74     (4.20)   4.21      (4.23)   4.24      (4.25)   4.26
</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>
50-999                 $5,000-$99,999   3.00 %   $    101.94          4.38%            4.41%            4.42%
1,000-2,499           100,000-249,999   2.60          101.52          4.39             4.43             4.44
2,500-4,999           250,000-499,999   2.35          101.26          4.40             4.44             4.45
5,000-9,999           500,000-999,999   2.10          101.00          4.42             4.45             4.46
10,000 and over    1,000,000 and over   1.85          100.74          4.42             4.46             4.47
</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
Short Intermediate Insured Trust                         1994                                  1995                  per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>            <C>
- -------------------------------------------------------------------------------------------------------------      --------------
Record Date*..........................        6/1            8/1           11/1            2/1            5/1
Distribution Date.....................       6/15           8/15          11/15           2/15           5/15
- ---------------------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .1769(1)                                                               $  4.2410
                                                             --------    $.3534 every month    --------
Quarterly Distribution Plan...........  $   .1769(1)   $   .7121(2)   $  1.0682      $  1.0682      $  1.0682      $  4.2730
Semi-Annual Distribution Plan.........  $   .1769(1)                  $  1.7883(3)                  $  2.1460      $  4.2920
- ---------------------------------------------------------------------------------------------------------------------------------
<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.
(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 $.08 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 $.01178 per unit per day.
Consequently, on the first Record Date (06/01/94), accrued interest will total
$0.7892 per unit for the 67-day period. Because a substantial portion of this
interest will not yet be due from the issuers of the bonds in the Fund, the
first payment to all Unitholders of Record on 06/01/94 is $.1769, and the
remaining $.6123 of accrued interest will remain an asset of the Trust and be
distributed in subsequent periods as portfolio bonds mature, or are redeemed, or
sold and the accrued interest on these bonds is collected. After the first
Record Date daily rates of accrual are:
              Monthly - $0.01178              Quarterly - $0.01187
                             Semi-Annual - $0.01192
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 12 Tax-exempt bond issues in this trust; this diversified portfolio
yields current income from issuers in 9 states.
- -------------------------------------------------
<TABLE>
<CAPTION>
                   Percent
                   of Total
                   Income
<S>                    <C>        <C>
- ------------------------
                                  %
Alaska                       9.7
Arizona                     15.5
California                  16.3
Florida                      9.0
Illinois                    10.7
 
<CAPTION>
                   Percent
                   of Total
                   Income
- ------------------------
<S>                    <C>        <C>
                                  %
Louisiana                    9.6
Oregon                      10.8
Washington                   6.3
Wisconsin                   12.1
</TABLE>
 
- -------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 4.9 years.
The first bond is scheduled to mature in July, 1998, with the last bond maturity
being December, 1999.
 
- -------------------------------------------------
 
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.
 
- -------------------------------------------------
 
* 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
 
                                 1-800-351-4100
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
 
721
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     TENNESSEE
     INSURED
     TRUST 25
 
            Estimated Current Return
            First
            Year: 5.25% to 5.41%
            Subsequent
            Years: 5.28% to 5.44%
            as of 03/23/94
 
            Estimated Long Term Return
            5.32% to 5.47%
             35,000 units in a
             diversified $3,500,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  67100U 820 Monthly Payment Option
                  67100U 838 Quarterly Payment Option
                  67100U 846 Semi-Annual Payment Option
 
                  Registered in Tennessee
                    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, TENNESSEE INSURED TRUST 25
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT MARCH 24, 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>
  --------------------------------------------------------------------------------------------------------------------------
  $  475,000    Commonwealth of Puerto Rico, Public Improvement Refunding          2003 at 101          AAA           Aaa
                  Bonds, Series 1993 (General Obligation Bonds.), 5.25% Due            1/2
                  7/1/18. (Original issue discount bonds delivered on or
                  about July 15, 1993 at a price of 93.414% of principal
                  amount.)
      50,000    Commonwealth of Puerto Rico, Public Improvement Refunding          2002 at 101          AAA           Aaa
                  Bonds, Series 1992A (General Obligation Bonds.), 6.00% Due           1/2
                  7/1/14.
     510,000    Cumberland Utility District of Roane and Morgan Counties,          2004 at 102          AAA           Aaa
                  Tennessee, Waterworks Revenue Refunding Bonds, Series
                  1994, 5.90% Due 1/1/23. (When issued.)
     500,000    The Health and Educational Facilities Board of the City of         2004 at 102          AAA           Aaa
                  Johnson City, Tennessee, Hospital Revenue Refunding Bonds,
                  Series 1994 (Johnson City Medical Center Hospital), 5.00%
                  Due 7/1/13. (Original issue discount bonds delivered on or
                  about March 8, 1994 at a price of 94.484% of principal
                  amount.)
     500,000    The Health, Educational and Housing Facilities Board of the        2003 at 102          AAA           Aaa
                  County of Knox (Tennessee), Hospital Facilities Revenue
                  Refunding Bonds, Series 1993 B (Mercy Health System),
                  6.00% Due 9/1/19.
     500,000    Memphis-Shelby County Airport Authority (Tennessee), Airport       2003 at 102          AAA           Aaa
                  Revenue Refunding Bonds, Series 1993, 5.65% Due 9/1/15.
     500,000    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
                  2/15/13.
     465,000    Williamson County, Tennessee, Series 1994, General                 2004 at 102          AAA           Aaa
                  Obligation School Bonds, 5.60% Due 9/1/12. (When issued.)
  ----------
  $3,500,000
  ----------
  ----------
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION
Sales charge/volume discount applies on all concurrent purchases of any Nuveen
trust units. 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>
50-999                 $5,000-$99,999   4.90 %   $    102.76     (5.25%)  5.28%     (5.28%)  5.31%     (5.30%)  5.33%
1,000-2,499           100,000-249,999   4.50          102.33     (5.27)   5.30      (5.30)   5.33      (5.32)   5.35
2,500-4,999           250,000-499,999   4.25          102.07     (5.29)   5.32      (5.32)   5.35      (5.34)   5.37
5,000-9,999           500,000-999,999   3.50          101.27     (5.33)   5.36      (5.36)   5.39      (5.38)   5.41
10,000 and over    1,000,000 and over   3.00          100.75     (5.36)   5.39      (5.39)   5.42      (5.41)   5.44
</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>
50-999                 $5,000-$99,999   4.90 %   $    102.76          5.32%            5.35%            5.36%
1,000-2,499           100,000-249,999   4.50          102.33          5.34             5.37             5.39
2,500-4,999           250,000-499,999   4.25          102.07          5.35             5.38             5.40
5,000-9,999           500,000-999,999   3.50          101.27          5.39             5.42             5.44
10,000 and over    1,000,000 and over   3.00          100.75          5.42             5.45             5.47
</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
Tennessee Insured Trust                                  1994                                  1995                  per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>            <C>
- -------------------------------------------------------------------------------------------------------------      --------------
Record Date*..........................        6/1            8/1           11/1            2/1            5/1
Distribution Date.....................       6/15           8/15          11/15           2/15           5/15
- ---------------------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2264(1)                                                               $  5.4268
                                                             --------    $.4522 every month    --------
Quarterly Distribution Plan...........  $   .2264(1)   $   .9098(2)   $  1.3647      $  1.3647      $  1.3647      $  5.4588
Semi-Annual Distribution Plan.........  $   .2264(1)                  $  2.2824(3)                  $  2.7389      $  5.4778
- ---------------------------------------------------------------------------------------------------------------------------------
<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.
(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 $.01507 per unit per day.
Consequently, on the first Record Date (06/01/94), accrued interest will total
$1.0096 per unit for the 67-day period. Because a substantial portion of this
interest will not yet be due from the issuers of the bonds in the Fund, the
first payment to all Unitholders of Record on 06/01/94 is $.2264, and the
remaining $.7832 of accrued interest will remain an asset of the Trust and be
distributed in subsequent periods as portfolio bonds mature, or are redeemed, or
sold and the accrued interest on these bonds is collected. After the first
Record Date daily rates of accrual are:
              Monthly - $0.01507              Quarterly - $0.01516
                             Semi-Annual - $0.01522
 
                                                          721
<PAGE>
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.
 
- --------------------------------------------------------------------------------
 
                                                          721
<PAGE>
- -------------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 22.4 years.
The first bond is scheduled to mature in September, 2012, with the last bond
maturity being January, 2023.
 
- -------------------------------------------------
 
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.
 
- -------------------------------------------------
 
* 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
 
                                 1-800-351-4100
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.


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