American M1 helmet shell in metal, showing general oxidation. The snap ring is closed at the front and the trigger guards are fixed. The lot number is illegible. The chinstraps are missing. There is some wear and a marked patina on the piece. Condition II+. US M1 helmet shell made of metal, showing widespread oxidation. The seam is frontfacing and the bales are of the fixed type. The lot number is illegible. The chinstraps are missing. The piece shows some wear and a pronounced patina. Condition is II+.