Model: Bar Hammer Percussion Singleshot Pistols
(Large frame and Small frame models)
Caliber: Small frame.31 calibers (some smoothbore), and Large frame .36 Calibers
Barrel Length(s): Various 2" to 6" (6" extremely rare)
Serial Number Range Small frame: 1 to under1,500
Serial Number Range Large frame: 1 to under1,500
Features: Wide variations in sizes. Hammer Address:"Manhattan F.A. Mfg. Co. New York"
Manufacturing date: around 1856 to 1859