This is an exceptional example of a U.S. Contract Model 1865 Spencer Carbines that was manufactured by the Burnside Rifle Company in 1865. These carbines were issued to U.S. Cavalry regiments on the frontier and saw extensive service until they were replaced by the Model 1873 Springfield carbine c. 1875. This carbine has a Stabler cut-off, folding leaf rear sight with 900 yard center notch, sling bar and ring and sling swivel mount on the stock. The carbine barrel and rear sight have a military blue finish, and the barrel band, receiver, hammer, lever, breech-block and buttplate are color casehardened. The sling bar and magazine tube are bright and the screws are fire blue. The stock and forearm are oil-finished, straight grain American walnut. The top of the receiver is roll-stamped: "MODEL 1865" followed by the Burnside Rifle Company legend and patent markings in four lines. The serial number "6998" is stamped on the top of the receiver. Three script Ordnance inspection marks are stamped on the left side of the stock behind the sling bar mount. The Ordnance sub-inspection mark "J.L.C." is stamped on the left barrel flat just ahead of the receiver. Single letter Ordnance sub-inspection marks are stamped on most major components.