Check the listing for details. WW2 German Luftwaffe Sauerstoffmaske - 1067 / HM51 PILOT OXYGEN MASK - RARE!. Listed at 2999.99 USD. 100% AUTHENTIC, with all parts and fittings being the ORIGINAL to this mask. A VERY SELDOM encountered mask, as used by both fighter pilots and bomber crews! The 2 primary manufactures were Dräger and Auer.