EXHIBIT 23.4

                         GRIFFIN FINANCIAL GROUP, LLC.


                                 July 30, 2003


Board of Directors
Mercer Insurance Group, Inc.
10 North Highway 31
Pennington, New Jersey 08534

Gentlemen:


         We hereby consent to the inclusion of (i) our appraisal of the
estimated pro forma market value of Mercer Mutual Insurance Company on a
consolidated basis as a subsidiary of Mercer Insurance Group, Inc., as updated
through May 30, 2003, and (ii) our letter dated January 2, 2003, regarding the
value of the subscription rights being granted in the conversion, as exhibits to
the Mercer Insurance Group, Inc. Form S-1 Registration Statement, and the
publication of the summary of its appraisal and the subscription rights
valuation in the prospectus that forms a part of the Registration Statement. We
further consent to the use of our name and the statements with respect to us
appearing in the sections of the prospectus captioned "Prospectus Summary --
Determination of Offering Price and Total Number of Shares Offered in the
Conversion", "Risk Factors -- Risk Factors Relating to the Ownership of Mercer
Insurance Group Common Stock" and "-- Risk Factors Relating to the Conversion",
"Capitalization", "Pro Forma Data", "The Conversion -- Background and Reasons
for the Conversion", "-- Conversion Process", "-- Limitations on Purchases of
Common Stock", "-- Stock Pricing and Number of Shares to Be Issued", "-- The
Valuation", and "-- Tax Consequences of Subscription Rights", "Experts" and
"Where You Can Find Additional Information."


                                               Sincerely,

                                               /s/ Griffin Financial Group, LLC.

                                               GRIFFIN FINANCIAL GROUP, LLC.