Manufactured in 1856. 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. 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) inspection cartouche stamped on the left of the grip, initials "B.M." hand carved over top of what was a "R.H.K.W." (Robert Henry Kirkwood Whiteley) cartouche on the right of the grip, and all matching visible serial numbers including handwritten in black ink inside the grip mortise.

Very good, with traces of original blue finish and case colors showing mostly smooth brown patina on the iron surfaces, a few patches of light pitting, dings around the wedge, attractive bright golden patina on the brass, and visible cylinder scene. Modern replacement wedge screw. Grip is also very good with scattered dents and scratches, lightly faded cartouches with period carved initials as mentioned above, and a few chipped sections at the bottom front corners. Mechanically fine.