A-10 A US Army Air Force regulation pilot and aircrew flying oxygen mask, modified for use with british communications system. Size MEDIUM. Made by ACUSHNET. Stamped US ARMY AIR FORCE. Dated April 1944. Complete with T-44 microphone, cable and JK-26 jack with british style PL-179 plug. Mint condition, rubber is pliable. Flying helmet and goggles aren't included. Typical 8th or 9th Air Force equipment.