George III, 1779, Queen Anne styled duelling pistol by Lord of Dublin, with long detachable cannon

George III, 1779, Queen Anne styled duelling pistol by Lord of Dublin, with long detachable cannon barrel, the butt depicting in silver a gorgons head with features of a male lion, extenting up the back with a silver acanthus leaf and a silver name plack [unused] hand grips of walnut with silver wire inlay, military items such as drum, cannon, flags/banners, spears, sword and acanthus leaves engraved in steel work, makers name and city on right hand side, London proof marks on the underside of barrel, a '1' also present probably meaning one of a pair, central mechanism fully working [PLEASE DO NOT COCK], overall very lightly pitted but generally in good working condition.