This carbine is one of over 11,000 altered and refurbished by the Springfield Armory around 1867-1874 with relined three-groove rifled barrels for use with both .56-52 and .56-50 ammunition, and fitted with a Stabler cut-off. It has the standard Spencer markings and sights, and the left of the stock behind the saddle bar is stamped with the "ESA" inspection cartouche of Erskine S. Allin, Springfield's Master Armorer.

Fine, retains 70% arsenal refurbished blue finish on the barrel with scattered smooth brown patina on the balance, and 50% of the case colors strongest in protected areas with smooth gray patina on the balance. Stock is also fine with defined edges, a few mild pressure dents on the left of the forend, a small re-glued piece behind the lock, some chipping on top behind the frame, some scattered handling marks on the buttstock, and a crisp cartouche. Mechanically excellent.