There were an estimated 2,000-3,000 manufactured between 1866 and 1878. The barrels are a 22 RF and a 32 RF. The barrels can be rotated to fire either barrel. The barrel flats are marked "AMERICAN ARMS CO . BOSTON, MASS." and "WHEELER'S PAT. OCT. 31. 1865-JUNE 19, 1866". The right grip panel is numbered to the gun. Consignor states that the derringer was purchased from the noted firearms expert the late Norm Flayderman in 2005.

Fine. The barrels retain 40% of the original blue finish with a smooth gray patina on the balance with some light pitting. The frame retains 80% plus original silver plating. The grips are fine with half of the finish remaining. Mechanically fine.