CERTIFICATION PURSUANT TO RULE 30A-2(b) UNDER THE 1940 ACT AND SECTION 906 OF
                             THE SARBANES-OXLEY ACT

I, Edward J. Roach, President & Treasurer of Chestnut Street Exchange Fund
(the "Registrant"), certify that:

      1.   The Form N-CSR of the Registrant (the "Report") fully complies
           with the requirements of Section 13(a) or 15(d) of the Securities
           Exchange Act of 1934, as amended; and

      2.   The information contained in the Report fairly presents, in all
           material respects, the financial condition and results of operations
           of the Registrant.

Date: August 23, 2006             /s/ Edward J. Roach
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                           Edward J. Roach, President & Treasurer
                           (Principal Executive and Principal Financial Officer)