This is a rare original example of a Colt Thuer Conversion Model 1860 Army revolver that was manufactured circa 1868-71. The top of the barrel is roll-stamped: "-ADDRESS COL. SAML COLT NEW-YORK U.S. AMERICA-" in one line. "COLTS/PATENT" is stamped on the left side of the frame. The cylinder is roll-engraved with the Texas Navy battle scene and "COLTS PATENT". The rear of the cylinder has been correctly shortened to accommodate the Thuer conversion ring, and the ring has a correct script "E" on the side, which denotes the eject position. All visible numbers are matching. Both the rear of the cylinder and rear of the conversion ring are stamped with the assembly number "20". (Internally the Thuer Ring retains most of the blue and is built like a watch, as an original should be!) The left side of the brass trigger guard is stamped with "44 Cal." The conversion ring has the distinctive knurled turning knob, rebounding firing pin, and ejection mechanism. The Thuer conversion was the first Colt revolver to utilize a metallic cartridge and is a historically significant variation of revolver that is missing from most of the antique Colt collections.

Very good, retains traces of the original blue finish and silver plating in sheltered areas, and faint traces of original case colors on the loading lever with the balance mostly a smooth grey patina and an attractive antique patina on the brass. The wood is fine with some scattered minor dings and scratches and retaining much of the original varnish. Mechanically excellent.