.54 caliber, 21" round barrel, S/N 6321. Breech marked " BURNSIDE PATENT / MODEL OF 1864 " and serial number matching on the block. Lockplate stamped " BURNSIDE RIFLE Co. / PROVIDENCE = R.I. ", mechanism functions smoothly. Walnut stock has iron furniture, the letters " I " and " M " carved on the left buttstock.
Good overall. Traces of finish remain in protected areas, with a mostly mottle gray patina. Good bore and action. Stock with numerous bumps and dings, two very faint cartouches at wrist.