This is an original Civil War M1855 socket bayonet issued to fit the US Percussion Model 1855 Springfield Rifle, as well as the M1861 and M1863 rifled-muskets. Blade surfaces are crisp along the entire length of the blade. Metal exhibits a pleasing gun metal gray patina with some oxidation but no pitting. Crisp “U.S.” and inspector “S” stamp present on flat of blade. Blade measures 17-7/8″, fuller measures 16-1/8″, overall length 20-7/8″.