US Army Air Force Pilot A-14 Oxygen Mask WWII

A-14 US Army Air Force regulation flying oxygen mask. Size MEDIUM. No visible date as the stamp wasn't applied properly on the production line but  the absence of anti-freeze plugs or duct baffle indicates production prior to 1945.. Made by OHIO CHEMICAL Co. Complete with storage box, instructions and accessories. Excellent condition, pliable with strong rubber fastening harness. The mask is equipped with the AN-B-MC1 microphone. Standardized on July 1943 this mask was issued to Army Air Force, Navy and USMC pilots during WWII. Helmet, goggles and display bust aren't included.