Only around 2,100 of these "conversions" were manufactured around 1877-1878 using a mixture of remaining Model 1860 Army parts and newly manufactured components. These revolvers were manufactured alongside the Single Action Army and are believed to have seen significant use in the Old West. The serial number is within the separate conversion range and is marked, full and partial, on the barrel, frame, trigger guard, back strap, and cylinder. The barrel has a German silver blade front sight, ejector mounted on the right, and "COLT'S PT. F. A. MFG. Co. HARTFORD, CT. U.S.A." on top. The cylinder has the standard naval battle scene. The frame has 1871 and 1872 patent markings on the left, "44 CAL" marked on the left of the trigger guard and assembly number "459" marked on the loading gate.

Very good, exhibiting mostly a smooth brown patina on the iron surfaces with a mostly defined scene on the cylinder, strong case colors visible at the edges of the frame and in protected areas, 75% original silver finish on the front grip strap and trigger guard, the balance an untouched dark brown patina, and mostly defined markings and edges in the metal. Grip is also very good as revarnished with some moderate crazing overall, numerous scattered dings and scratches, and various filled in repairs on the bottom flat of each grip panel. Mechanically excellent.