SEARS MUNICIPAL TRUST LONG TERM PORTFOLIO SERIES 122, 497J, 1997-09-25

SEARS MUNICIPAL TRUST LONG TERM PORTFOLIO SERIES 122
497J, 1997-09-25

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                                             Rule 497(j)
                                             Reg. No. 33-47083

Pursuant to Rule 497 (j) promulgated under the Securities Act
of 1933, the Registrant, Dean Witter Select Municipal Trust,
Long Term Portfolio Series 122, 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.

                         DEAN WITTER SELECT MUNICIPAL TRUST,
                         LONG TERM PORTFOLIO SERIES 122

                         By:  Dean Witter Reynolds Inc.
                                 (Depositor)

                                Thomas Hines
                                Thomas Hines
                                Authorized signatory