PRUDENTIAL UNIT TRUSTS INS TX-EX SER 12 & INS MUL TX-EX SR 9, 497J, 1994-02-04

PRUDENTIAL UNIT TRUSTS INS TX-EX SER 12 & INS MUL TX-EX SR 9
497J, 1994-02-04

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                              Rule 497(j)
                              Registration No. 2-99177
                              Registration No. 2-99179 


Pursuant to Rule 497(j) promulgated under the Securities Act of
1933, the Registrant, Prudential Unit Trusts, Insured Tax-Exempt
Series 12 and Insured Multistate Tax-Exempt Series 9 hereby
certifies as follows:

1)   the form of prospectus that would have been filed under
paragraph (b) of Rule 497 does not differ from that contained in
the most recent amendment to the registration statement, and

2)   the text of the said amendment to the registration statement
has been filed electronically.

                         PRUDENTIAL UNIT TRUSTS, 
                         Insured Tax-Exempt Series 12
                         Insured Multistate Tax-Exempt Series 9


                         By: Prudential Securities Incorporated
                                  (Depositor)


                             Richard R. Hoffmann
                             Richard R. Hoffmann
                             Authorized Signatory