US Army Air Force Pilot A-10 Oxygen Mask

A-10  US Army Air Force regulation pilot and aircrew flying oxygen mask. Rare  "Revised" type. Size SMALL. Made by ACUSHNET. Stamped US ARMY AIR FORCE. Dated 1943. Complete with all its specific features as the fastening ring and nose clip. Mint condition with as new pliable rubber. Flying helmet and goggles aren't included.