Picked up my first M1 Helmet at a local swap meet for $20 thinking it was maybe a vietnam era shell. After I arrived home I decided to do some research and came across some info stating that all M1's marked from 0-300 are WWII era shells.
This one is marked 1248B which would make it a late war rear seam shell, correct? Its got the swivel bales and one chinstrap. Any idea if the chinstrap is original? I'd like to find a liner for it. Is there way to determine what size the shell is from the stamp markings? Any additional info on this helmet would be greatly appreciated.