Manufactured in 1857. The Colt "Army/Navy" revolvers were manufactured between 1855 and 1859 and fall within the 42,000-80,000 serial number range. The initial issue of the "Army/Navy" revolvers was to the 1st and 2nd Cavalry regiments which were organized in 1855. The "Army/Navy" revolvers were first used on the Texas frontier and subsequently saw wide service with federal cavalry regiments during the Civil War. Features a brass cone front sight, "-ADDRESS SAML COLT NEW-YORK CITY-" on the top of the barrel, "COLTS/PATENT/U.S." marked frame, standard navy battle cylinder scene, small single-letter sub-inspection marks, oval script "LCA" (Lucius C. Allin) and "R.H.K.W." (Robert Henry Kirkwood Whiteley) cartouches stamped on the grip, and all matching visible serial numbers including handwritten in black ink inside the grip mortise.

Very good, with mottled brown patina overall on the iron surfaces, traces of original case colors visible on the loading lever, attractive golden aged patina on the brass, and visible cylinder scene. Grip is fine with an overcoat of period applied varnish, scattered dents and scratches, lightly faded but visible cartouches, and defined edges. Mechanically fine.