Original WW2 US USAF Pilot Oxygen Mask Type A-14 Size Medium For Sale

Original WW2 US USAF pilot oxygen mask type A-14.The mask is a size medium.Overall the mask is in very good used condition; the rubber is still very pliable with some minor blemishes from use.There is a small rip at the very edge of the mask (as pictured) where the rubber has slightly stiffened up, but thankfully it is not visible when mounted; so the mask still displays nicely.Very hard to find piece nowadays.Thanks for looking.