US Army Air Force Pilot A-10 Oxygen Mask WWII USAAF

A-10 Revised US Army Air Force regulation pilot and aircrew flying oxygen mask. This is the last improvement of the A-10 model, before the introduction of the A-10A type in October 1943. Size REGULAR. Dated  April 1943, modified in September 1943. Made by ACUSHNET Stamped US ARMY AIR FORCE. Excellent condition, with original box, instructions and accessories. Scarce model. Goggles and helmet aren't included.