I think this one is for a 1903 Springfield rifle. It is marked SA 1918 with a flaming bomb on one side and the other is marked U. It looks like it was maybe never used. The blade looks like it was sharpened at the factory only. The scabbard is plastic and marked USN MK 1 and has an attachment for a pistol belt.Thanks for looking and have fun. The item "WWI US M1905 Bayonet Marked SA 1918 withMK 1 Scabbard, M1903 Springfield Rifle" is in sale since Monday, March 23, 2020.
This item is in the category "Collectibles\Militaria\WW I (1914-18)\Original Period Items\United States\Edged Weapons". The seller is "chasecreek64" and is located in Suttons Bay, Michigan. This item can be shipped to United States.