<PAGE> 1
EXHIBIT 4.2
NUMBER SHARES
1 100
INCORPORATED UNDER THE LAWS OF BERMUDA
TRENWICK GROUP LTD.
PAR VALUE OF SHARES US$0.10 EACH
THIS IS TO CERTIFY THAT [ ], [ ] IS THE
REGISTERED HOLDER OF ONE HUNDRED FULLY PAID COMMON SHARES OF THE PAR VALUE OF US
$0.10 EACH IN THE ABOVE-NAMED COMPANY, SUBJECT TO THE MEMORANDUM OF ASSOCIATION
AND BYE-LAWS THEREOF.
GIVEN UNDER THE COMMON SEAL OF THE COMPANY THIS [ ] DAY OF [ ],
2000.
SPECIMEN CERTIFICATE
-------------------------------------- DIRECTOR
-------------------------------------- SECRETARY