Exhibit 8.3

                       [Letterhead of RP Financial, LC.]

                                                  June 7, 1999

Board of Trustees
Westborough Bancorp, MHC
Board of Directors
Westborough Savings Bank
100 East Main Street
Westborough, Massachusetts  01581

Re:   Stock Issuance Plan: Subscription Rights

Gentlemen:

      All capitalized terms not otherwise defined in this letter have the
meanings given such terms in the stock issuance plan adopted by the Board of
Directors of yWestborough Savings Bank ("Westborough Savings" or the "Bank") and
the Board of Trustees of Westborough Bancorp, MHC (the "MHC"). Pursuant to the
stock issuance plan, Westborough Savings will become a wholly-owned subsidiary
of Westborough Financial Services, Inc. (the "Holding Company"), a Massachusetts
corporation, and the Holding Company will issue a majority of its common stock
to the MHC, and sell a minority of its common stock to the public.

      We understand that in accordance with the stock issuance plan subscription
rights to purchase shares of common stock in the Holding Company are to be
issued to: (1)yEligible Account Holders; (2) Tax-Qualified Employee Benefit
Plans; and (3) Supplemental Eligible Account Holders. Based solely upon our
observation that the subscription rights will be available to such parties
without cost, will be legally non-transferable and of short duration, and will
afford such parties the right only to purchase shares of common stock in the
Holding Company at the same price as will be paid by members of the general
public in the Community Offering, but without undertaking any independent
investigation of state or federal law or the position of the Internal Revenue
Service with respect to this issue, we are of the belief that, as a factual
matter:

      (1)   the subscription rights will have no ascertainable market value;
            and,

      (2)   the price at which the subscription rights are exercisable will not
            be more or less than the pro forma market value of the shares upon
            issuance.

      Changes in the local and national economy, the legislative and regulatory
environment, the stock market, interest rates, and other external forces (such
as natural disasters or significant world events) may occur from time to time,
often with great unpredictability and may materially impact the value of thrift
stocks as a whole or the Holding Company's value alone. Accordingly, no
assurance can be given that persons who subscribe to shares of common stock in
the Subscription Offering will thereafter be able to buy or sell such shares at
the same price paid in the Subscription Offering.

                                                 Very truly yours,

                                                 RP FINANCIAL, LC.

                                                 /s/ RP FINANCIAL, LC.