This is an original Civil War Model 1842 socket bayonet for use with the M1842 .69cal Muskets. Surfaces exhibit a mix of steel grey patina and scattered light pitting. Blade is marked “U.S.” . The U is deep and the S was light stamped. It has an intact and functional locking ring. The overall length is 20 5/8, Blade Length 18-1/8″ and a socket length of 2 5/8. This is in very good condition and would be great for a display or reacting.