Civil War Spencer Carbine .52 caliber carbine. Union used approximately 50,000 .52 caliber (using the 56-56 Rimfire Spencer cartridge) during the Civil War. This circa 1864-1865 carbine is marked “Spencer Repeating/ Rifle Co. Boston, Mass./ Pat’d March 6, 1860” on top of the receiver. The 22” round barrel has an excellent bore. Metal is good with a blue/brown patina with scattered light pitting along the barrel at the wood line and freckling on the receiver. Wood is good with the expected dents and dings of a cavalry arm. Has a small crack on the right tip of the forearm. The hammer screw is a period replacement. Action functions correctly. Correct front and rear sights. A nice Civil War Spencer that undoubtedly saw action.