I have an old British Bulldog gun and would like to know some info on it. It seems there are many makes by different manufacturers. This gun has wooden grips with a 98 stamped on the inside left and 36 on the right. The front of the tumbler has a ID mark. The rear has a D w/star and the oval with F(fairly sure), L and G w/star. On the side of tumbler opposite the D w/star is a star. Lower right of the tumbler on the frame has a J w/star. Upper right of tumbler on frame has a D w/star. Top middle of barrel has a perpendicular sign with a 4. British Bulldog is stamped over the barrel. Any help would be appreciated and a source of parts as the trigger isn't working.

Mike