Quote Originally Posted by pelletcaster View Post
I'm afraid - not.

HW77 Mk1 was introduced with the change of the HW35 form leather to synthetic piston seal.
This happended in 1980 somewhere around serial number 843636 (not sure exactly).

I'm afraid you may be thinking of the HW80.

January 1984 MK 1 HW 77 released in UK - Mick's list