Henry Hadley; Pair of Flintlock Pistols with Square-Drive Key; British; London; ca. 1765; London; British; London; Steel; wood (walnut); silver; gold; copper alloy; Each pistol: L. 16 3/4 in. (42.5 cm); L. of barrel 11 1/4 in. (28.6 cm); Cal. .63 in. (16 mm); Wt. of pistol (a): 2 lb. 3.2 oz. (998 g); Wt. of pistol (b): 2 lb. 3.7 oz. (1012 g); drive key (c): H. 2 3/8 in. (6.03 cm); L. 1 9/16 in. (3.97 cm); Wt. 0.8 oz. (21 g); Firearms-Pistols-Flintlock