A 28 BORE FLINTLOCK TURN-OFF PISTOL, BIRMINGHAM PRIVATE PROOF MARKS, CIRCA 1780 with cannon barrel, scroll-engraved box-lock action, decorated with trophies-of-arms, sliding thumb-piece safety-catch (top-jaw and screw replaced), figured walnut butt swelling towards the pommel and with flattened sides, silver mounts cast and chased in low relief comprising vacant escutcheon, grotesque mask butt-cap and engraved iron trigger-guard 10.0 cm; 4 in barrel