56-Bore (.436 caliber), 6.675" octagonal barrel, S/N 12,277R. Blued finish, checkered walnut grip. Double-action, 5-shot percussion Model 1851 Adams Patent percussion revolver with solid forged one-piece frame and barrel. Lower right side of frame engraved ADAMS' PATENT No 12,277R with the cylinder engraved No 12,277 / R. Top strap engraved with the retailer mark F. BARNES & Co FENCHURCH St. LONDON. Lower front of frame with caliber marking 56, indicating 56 round balls to the pound or "56 Bore." Contained in an English oak compartmentalized retailer casing with a green baize lining and a Frederick Barnes & Co. paper label inside the lid. Accessories include an Adams Patent marked 54-bore brass dual cavity mold, an unmarked copper lozenge-shaped powder flask, an ebony handled cone wrench, a rosewood combination ramrod and leaning rod with removable cleaning and loading tips and an integral ball puller, and a wad cutter. The M1851 Adams revolver was a "self-cocking" (double-action only) design with spring-loaded safety on the left rear of the frame that allowed the hammer to be kept away from the percussion cones and when set allowed the cylinder to rotate freely for loading. No loading lever was incorporated into the design.
Very good. Barrel and frame with much of the bright blue, with some thinning, fading and loss. Cylinder with only traces of finish and a mottled gray patina. Markings remain clear, mechanically functional, fine bright bore with crisp rifling and some scattered oxidation and light pitting. Case about good with wear inside and out, some loose partitions and some fading and loss to the lining. Accesories all about good to very good.