This truly outstanding Richards-Mason metallic cartridge "conversion" of a Colt Model 1862 Police revolver is pictured on page 161 of "The William M. Locke Collection" by Frank Sellers and is certainly among the finest Colt "conversion" revolvers extant. Only around 6,500 '62 Police/Pocket Navy revolvers were manufactured c. 1873-1875 using a mix of left over and newly manufactured parts. Within this group, there are a variety of variations in barrel length, centerfire versus rimfire, fluted versus non-fluted cylinders, markings, and finish making this revolver especially scarce. It is finished with a high polish blue on the barrel, ejector, and cylinder; niter blue on the screws and trigger, case colors on the hammer and frame, and silver plating on the trigger guard and back strap, and it is fitted with a "piano" varnished walnut grip. The barrel, frame, trigger guard, back strap, and cylinder are all marked with the matching low serial number "112", and the breech plate and loading gate have the assembly number "68". The loading gate is the style without a spring. It features a small brass cone front sight, "ADDRESS COL. SAML COLT NEW-YORK U.S. AMERICA" on top of the barrel, the ejector rod housing fitted on the right, "COLTS/PATENT" on the left side of the frame, and "36 CAL" on the left side of the trigger guard. Provenance: The Williiam Locke Collection and The Mac McCroskie Collection