Approximately 273,000 Springfield Model 1863 Type I rifle-muskets were manufactured c. 1863-1864 with the screw fastened barrel bands. These rifles are significant in the history of U.S. martial arms, as they armed Union troops and saw widespread use in the latter years of the Civil War. Solid blade front and 500 yard two-leaf rear sight, "1863" dated barrel with "V/P/eagle head" proofs, and casehardened "1863" dated "U.S./SPRINGFIELD" marked lock with the Federal Eagle. The left stock flat is marked with two bordered script cartouches including one of Springfield Master Armorer Erskine S. Allin. "US" marked buttplate tang. Includes a "US" marked socket bayonet.