Frank Wesson" Model 1870 Single Shot Rimfire 22 Caliber Rifle Pistol. Long, round, bronzed barrel, marked on the side "Frank Wesson Worcester Mass Patented May 31-1870", with screw-adjustable sight, "Tunnel" sight on dovetail. Opening by turning half a turn to the right, extractor, spur trigger. Nickel-plated frame. Varnished walnut stock plates. Nickel-plated metal skeleton stock with the same number as the gun "21756". Length barrel: 51 cm - Overall length: 87 cm - Diameter box magazine: 7 mm B.E. Manufactured from 1870 to 1880 to 5 000 specimens approximately. Nota bene: with a very rare round wooden magazine, with nickel-plated rotary lid, bordered of small brass nails, being incorporated in the stick, containing 32 ammunition laid out in order to give only one cartridge at the time.