.54 caliber. 8.5" round barrel, secure by a single brass barrel band. SN: NSN. Bright finish, brass furniture, walnut stock. Single shot percussion muzzleloading smoothbore pistol with captive swivel ramrod, and a brass blade front sight. Lock clearly marked in two horizontal lines forward of the hammer U.S./H ASTON and in three vertical lines at the tail, MIDDTN/CONN./1849. Breech plug tang with matching 1849 date and breech with US/SK/P inspection marks. Left breech flat also marked S.K. The counterpane of the stock is crisply marked with two fine script cartouches, with the SK of civilian sub-inspector Samuel Knous in the forward position, and the WAT of Ordnance Office William Anderson Thornton in the rear position. A very fine example of the last of the single shot smoothbore pistols to see issue to the US Army, rarely found with such crisp wood.