NSN. Made Circa 1820. 52 caliber with a 8 ½” barrels. This is a very fine over under pistol. The bores are unrifled and excellent. Overall, this gun is in excellent condition with 90% of the original brown finish with Damascus pattern. The barrel has a gold band near the breech plug. The tang is nicely engraved. Each lock is marked “Prosser” and has the rolling frizzen as well as a safety. The trigger guards are nicely  engraved and have original blue that rates approximately 90%. The checkering is nice and sharp. This gun came with a should stock at one time as it has the female attachment, but is unfortunately not present now. This is a first class gun is excellent condition!