CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


We consent to the  incorporation by reference in the  registration  statement of
SIS  Bancorp,  Inc. On Form S-8 as filed  September  5, 1996 of our report dated
January  21,  1994 on our  audit  of the  financial  statements  of  Springfield
Institution  for Savings as of December 31, 1993 and for the year then ended. We
also consent to the reference to our firm under the caption "Experts."


/s/ Coopers & Lybrand L.L.P.

COOPERS & LYBRAND L.L.P.


Springfield, Massachusetts
September 5, 1996