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AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 19, 1996
REGISTRATION NO. 33-41494
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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
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POST-EFFECTIVE AMENDMENT NO. 4
TO
FORM S-6
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FOR REGISTRATION UNDER THE SECURITIES ACT
OF 1933 OF SECURITIES OF UNIT INVESTMENT
TRUSTS REGISTERED ON FORM N-8B-2
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A. EXACT NAME OF TRUST:
DEFINED ASSET FUNDS--
GOVERNMENT SECURITIES INCOME FUND
MONTHLY PAYMENT U.S. TREASURY SERIES--12
(A UNIT INVESTMENT TRUST)
B. NAMES OF DEPOSITORS:
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
SMITH BARNEY INC.
PAINEWEBBER INCORPORATED
PRUDENTIAL SECURITIES INCORPORATED
DEAN WITTER REYNOLDS INC.
C. COMPLETE ADDRESSES OF DEPOSITORS' PRINCIPAL EXECUTIVE OFFICES:
MERRILL LYNCH, PIERCE,
FENNER & SMITH
INCORPORATED
DEFINED ASSET FUNDS
POST OFFICE BOX 9051
PRINCETON, NJ 08543-9051 SMITH BARNEY INC.
388 GREENWICH
STREET--23RD FLOOR
NEW YORK, NY 10013
PAINEWEBBER INCORPORATED PRUDENTIAL SECURITIES DEAN WITTER REYNOLDS INC.
1285 AVENUE OF THE INCORPORATED TWO WORLD TRADE
AMERICAS ONE NEW YORK PLAZA CENTER--59TH FLOOR
NEW YORK, NY 10019 NEW YORK, NY 10292 NEW YORK, NY 10048
D. NAMES AND COMPLETE ADDRESSES OF AGENTS FOR SERVICE:
TERESA KONCICK, ESQ. LAURIE A. HESSLEIN ROBERT E. HOLLEY
P.O. BOX 9051 388 GREENWICH ST. 1200 HARBOR BLVD.
PRINCETON, NJ 08543-9051 NEW YORK, NY 10013 WEEHAWKEN, NJ 07087
LEE B. SPENCER, JR. DOUGLAS LOWE, ESQ. COPIES TO:
ONE NEW YORK PLAZA 130 LIBERTY STREET--29TH PIERRE DE SAINT PHALLE,
NEW YORK, NY 10292 FLOOR ESQ.
NEW YORK, NY 10006 450 LEXINGTON AVENUE
NEW YORK, NY 10017
The issuer hereby revokes its registration of an indefinite number of Units
under the Securities Act of 1933 pursuant to Rule 24f-2.
Check box if it is proposed that this filing will become effective immediately
upon filing pursuant to paragraph (b) of Rule 485. / x /
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DEFINED ASSET FUNDS--
GOVERNMENT SECURITIES INCOME FUND
CONTENTS OF REGISTRATION STATEMENT
This Post-Effective Amendment to the Registration Statement on Form S-6
comprises the following papers and documents:
The facing sheet of Form S-6.
The cross-reference sheet (incorporated by reference to Post-Effective
Amendment No. 2 to the Registration Statement on Form S-6 of The Government
Securities Income Fund, GNMA Series E, 1933 Act File No. 2-74993).
The Signatures.
R-1
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DEFINED ASSET FUNDS--
GOVERNMENT SECURITIES INCOME FUND
MONTHLY PAYMENT U.S. TREASURY SERIES--12
SIGNATURES
PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT,
DEFINED ASSET FUNDS--GOVERNMENT SECURITIES INCOME FUND, MONTHLY PAYMENT U.S.
TREASURY SERIES--12 (A UNIT INVESTMENT TRUST), CERTIFIES THAT IT MEETS ALL OF
THE REQUIREMENTS FOR EFFECTIVENESS OF THIS REGISTRATION STATEMENT PURSUANT TO
RULE 485(B) UNDER THE SECURITIES ACT OF 1933 AND HAS DULY CAUSED THIS
REGISTRATION STATEMENT OR AMENDMENT TO THE REGISTRATION STATEMENT TO BE SIGNED
ON ITS BEHALF BY THE UNDERSIGNED THEREUNTO DULY AUTHORIZED IN THE CITY OF NEW
YORK AND STATE OF NEW YORK ON THE 19TH DAY OF NOVEMBER, 1996.
SIGNATURES APPEAR ON PAGES R-3, R-4, R-5, R-6 AND R-7.
A majority of the members of the Board of Directors of Merrill Lynch,
Pierce, Fenner & Smith Incorporated has signed this Registration Statement or
Amendment to the Registration Statement pursuant to Powers of Attorney
authorizing the person signing this Registration Statement or Amendment to the
Registration Statement to do so on behalf of such members.
A majority of the members of the Board of Directors of Smith Barney Inc. has
signed this Registration Statement or Amendment to the Registration Statement
pursuant to Powers of Attorney authorizing the person signing this Registration
Statement or Amendment to the Registration Statement to do so on behalf of such
members.
A majority of the members of the Executive Committee of the Board of
Directors of PaineWebber Incorporated has signed this Registration Statement or
Amendment to the Registration Statement pursuant to Powers of Attorney
authorizing the person signing this Registration Statement or Amendment to the
Registration Statement to do so on behalf of such members.
A majority of the members of the Board of Directors of Prudential Securities
Incorporated has signed this Registration Statement or Amendment to the
Registration Statement pursuant to Powers of Attorney authorizing the person
signing this Registration Statement or Amendment to the Registration Statement
to do so on behalf of such members.
A majority of the members of the Board of Directors of Dean Witter Reynolds
Inc. has signed this Registration Statement or Amendment to the Registration
Statement pursuant to Powers of Attorney authorizing the person signing this
Registration Statement or Amendment to the Registration Statement to do so on
behalf of such members.
R-2
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MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
DEPOSITOR
By the following persons, who constitute a majority of Powers of Attorney
the Board of Directors of Merrill Lynch, Pierce, have been filed
Fenner & Smith Incorporated: under
Form SE and the
following 1933 Act
File
Number: 33-43466
and 33-51607
HERBERT M. ALLISON, JR.
BARRY S. FREIDBERG
EDWARD L. GOLDBERG
STEPHEN L. HAMMERMAN
JEROME P. KENNEY
DAVID H. KOMANSKY
DANIEL T. NAPOLI
THOMAS H. PATRICK
JOHN L. STEFFENS
DANIEL P. TULLY
ROGER M. VASEY
ARTHUR H. ZEIKEL
By DANIEL C. TYLER
(As authorized signatory for Merrill Lynch, Pierce,
Fenner & Smith Incorporated and
Attorney-in-fact for the persons listed above)
R-3
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PRUDENTIAL SECURITIES INCORPORATED
DEPOSITOR
By the following persons, who constitute a majority of Powers of Attorney
the Board of Directors of Prudential Securities have been filed
Incorporated: under Form SE and
the following 1933
Act File Number:
33-41631
ALAN D. HOGAN
GEORGE A. MURRAY
LELAND B. PATON
HARDWICK SIMMONS
By
WILLIAM W. HUESTIS
(As authorized signatory for Prudential Securities
Incorporated and Attorney-in-fact for the persons
listed above)
R-4
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SMITH BARNEY INC.
DEPOSITOR
By the following persons, who constitute a majority of Powers of Attorney
the Board of Directors of Smith Barney Inc.: have been filed
under the 1933 Act
File Numbers:
33-49753, 33-55073
and 333-10441
STEVEN D. BLACK
JAMES BOSHART III
ROBERT A. CASE
JAMES DIMON
ROBERT DRUSKIN
ROBERT H. LESSIN
WILLIAM J. MILLS, II
MICHAEL B. PANITCH
PAUL UNDERWOOD
By GINA LEMON
(As authorized signatory for
Smith Barney Inc. and
Attorney-in-fact for the persons listed above)
R-5
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DEAN WITTER REYNOLDS INC.
DEPOSITOR
By the following persons, who constitute Powers of Attorney have been filed
a majority of under Form SE and the following 1933
the Board of Directors of Dean Witter Act File Number: 33-17085
Reynolds Inc.:
CHARLES A. FIUMEFREDDO
JAMES F. HIGGINS
STEPHEN R. MILLER
PHILIP J. PURCELL
THOMAS C. SCHNEIDER
WILLIAM B. SMITH
By
MICHAEL D. BROWNE
(As authorized signatory for
Dean Witter Reynolds Inc.
and Attorney-in-fact for the persons listed above)
R-6
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PAINEWEBBER INCORPORATED
DEPOSITOR
By the following persons, who constitute Powers of Attorney have been filed
a majority of under
the Executive Committee of the Board the following 1933 Act File
of Directors of PaineWebber Number: 33-55073
Incorporated:
JOSEPH J. GRANO, JR.
DONALD B. MARRON
By
ROBERT E. HOLLEY
(As authorized signatory for
PaineWebber Incorporated
and Attorney-in-fact for the persons listed above)
R-7
