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.” stamp present on flat of blade, but the top curve of the “S” is missing. Blade measures 17-15/16″, fuller measures 16-1/8″, overall length 20-15/16″.