One of approximately 6,500 factory converted c. 1873-1875. The barrel has the standard two-line address and the two patent dates are marked on the left of the frame. "N" stamped under serial number on frame, trigger guard, and butt (writer believes this to denote nickel finish). Matching visible serial number "4140" on the barrel, frame, trigger guard, butt and cylinder, with "4070" on the cylinder pin and loading gate, and an unnumbered wedge.

Very fine, retains 80% original nickel finish with some light flaking around some of the edges and some areas of light freckling. A few screw heads are slightly deformed. The grip is very fine, with some dents and handling marks, and a few minor chips along the defined edges. Mechanically functions fine, but is slightly out of time.