A U.S. MODEL 1866 (SECOND MODEL) ALLIN CONVERSION RIFLE, Springfield Armory, 1866. 40 in., .50 Centerfire caliber, leaf rear sight, loading door marked '1866' and with eagle's head proof mark; lock marked '1864' and with a spread wing eagle and 'U.S./SPRINGFIELD'; walnut stock, steel furniture, cleaning rod with slotted head; with locking ring socket bayonet marked 'US.' Overall lg. 56 in. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing