Manufactured c. 1857-1861, approximately 4,500 of these Pocket Model double action revolvers were produced by the Mass. Arms Co. based on Adams' patent. In reality this design was based on Adams' patent, the double and single action function based on Beaumont's patent, and the loading lever based on Kerr's patent, but generally it's Adams' name attached to the design. These revolvers were generally considered stronger than Colts, with the frame and barrel being of all one piece, and the double action function gave it a significant advantage in rapid firepower. On top of these advantages, these Pocket Model Adams revolvers were generally smaller than Colt's Model 1849 Pocket, making them more suitable for being concealed in a coat pocket, a major factor in their being few high condition examples left for collectors. This high condition example has the standard three-line Adams patent and Mass. Arms Co. marking on the top strap, while the serial number is marked on the left of the frame and the cylinder. It is fitted with a brass cone front sight and notch rear sight on the top rear of the frame, as well as a checkered walnut grip. It includes a hardwood case, Mass. Arms marked ball mold, powder flask, cap tin, combination tool, and a selection of balls and bullets.

Excellent, retains 90% plus of the bright, original, high polish blue finish with some light spotting near the muzzle and some very light flash pitting on the edges of the top strap and rear of the barrel/front of the cylinder. The grip is also excellent with a few light handling marks and crisp checkering. Mechanically excellent. The case is very fine with some scattered light handling/storage marks. The accessories are all fine to very fine. An exceptional cased Mass. Arms Co. Adams revolver set with all the accessories! It would be difficult to improve upon this example!