Manufactured in 1878. The barrel is stamped with the one-line Hartford address. The ejector rod has the correct bullseye head. The caliber marking "45 CAL" is stamped on the left side of the trigger guard. The frame has the three-line, three patent dates marking on the left side. A Colt factory inspector letter "B" is stamped in the hammer well. Matching serial numbers are stamped on the frame, trigger guard, back strap, cylinder ("4315") and barrel ("4315"). The loading gate is marked with the assembly number "378". Blade front and frame notch rear sights, blue finished barrel, cylinder and grip straps, casehardened frame and hammer, and fitted with a smooth one-piece walnut grip.

Fine. The barrel and ejector rod housing retains 40% original blue finish and the grip straps retain 50% original blue finish, otherwise a smooth gray patina. There is a patch of pitting near the muzzle (left side). The renumbered to match replacement cylinder is smooth artificial brown-gray patina with traces of blue finish in the flutes. 50% vivid original case colors remain on the hammer and frame. The lightly sanded, recoiled grip is very good with a small chip near the bottom (left side), faint initials on the bottom, rough along the front edges and some minor handing marks. Mechanically excellent.