Approximately 75,000 of these rifle-muskets were manufactured by Colt during the Civil War loosely based on the British Pattern 1853 "Enfield" rifle-muskets, and some of the design elements were later used on the Springfield Model 1863 rifles. This "1864" dated rifle-musket (both lock plate and barrel correspond) has the standard markings and features (no "STEEL" barrel marking) including "M.N.M" inspectors mark on the breech as well as "AWM" and "L.L" cartouches on the left stock flat. "GDM" (George D. Moller) collection initials marked on the toe of the stock. Includes a leather sling and "U.S." marked socket bayonet. Provenance: The George Moller Collection; Property of a Gentleman