At the start of World War I the Marine Corps didn’t have a helmet. They wore the familiar campaign hat that had been used since before the Spanish American War. When the US entered WWI it adopted the British pattern helmet and designated it as the M1917.

Great condition helemt with U.S. Marine Coprs Emblem affixed to the front. Full interior, chin strap ripoped, but present. Maker's mark "ES 15" on reverse rim.

Rare helmet.