Standard markings on the 1864 dated lock plate and "1866 / [eagle head]" stamped on the breechblock. An eagle head is repeated on the left barrel flat with the letter "C" stamped on the left side of the barrel ahead of the two leaf rear sight. "U" marked barrel bands and "US" and "C" marked buttplate. The left stock flat has two script cartouches and the letter "B" behind the trigger guard. Complete with sling swivels and slotted cleaning rod.