Some of these guns have been dated to the late 1840s-1860s and are believed to have been mounted to Royal Navy ships. The Barnett family were major suppliers to the British government as well as the Confederacy and fur trade. The barrel has a roughly 1 inch bore that flares to 2 3/8 inches at the muzzle and a single "crown/cross scepter" proof, and the lock is marked "BARNETT/LONDON" at the center. An iron swivel mount is fitted through the forend, and the stock has "BARNETT/GUNMAKERS/LONDON" in an oval on the right side of the buttstock and "JW" (first letter unsure) on the tail of the left flat.