Sure looks period. Enameled steel canteen. It might be from different parts since the cap is bakelite. Look for a stamp inside the cover along the button area. NH
Good one mid to late war I have one just like it dated HRE 43 with a pebbled strap. timothy
Good one. looks very much like one I sold. Did you take the cover of to see if the canteen has any names or dates carved in?