Total production of Model 1860 Army Richards conversion revolvers is estimated at approximately 9,000, and most of those are the standard model rather than this transitional 2nd Model/Type II variation which has the Richards-Mason breech plate and hammer but retains the barrel lug type and ejector of the original Richards conversion. It has blade and hammer notch sights, the one-line New York barrel address, the two-line 1871 and 1872 patents on the left side of the frame which was originally a percussion frame cut for use with a shoulder stock, "44 CAL" on the left trigger guard shoulder, matching visible serial numbers (including "3791" on the loading gate rather than an assembly number), and smooth walnut grip.