Only 1,000 Navy Model Adams Patent revolver were manufactured by Massachusetts Arms Co. in Chicopee Falls between 1857 and 1861. Of these, only around 600 were purchased by the U.S. government. This example has small single letter inspection marks, and script "WAT" ( William Anderson Thornton) and "LCA" (Lucian C. Allin) cartouches on the sides of the checkered grip. The barrel has a blade front sight and the rear sight is a notch on the top of the frame at the rear. A Kerr's patent loading lever is mounted to the left side and runs parallel with the barrel. The top strap is marked "MANUFACTURED BY/MASS. ARMS. CO./CHICOPEE FALLS." The left side of the frame has "ADAMS PATENT/MAY 3D 1853.," and the right side has "PATENT/JUN 3 1855." The matching serial number is marked on the frame, cylinder, and side of the back strap.

Very good plus. The loading lever retains more than half of the blue finish. The revolver retains 20% original blue with the balance having mostly an aged brown patina and some light oxidation. The grip is also very good and has crisp checkering and legible cartouches. The action functions fine, and the markings are mostly crisp.