This is a original Ulmer 82 Aircrew Quick Donning Oxygen Mask Assembly

Original Aircrew Mask Assembly MBU 4 /P Oxygen Mask

Original green Russian aviation oxygen mask KM-32 with bladder

This is a full set PFL-1 Panoramic Biolgical Chemical Protective Mask for Helicopter and Transport Aircraft Flight Crews

Original unused Soviet Russian military surplus Pilot Oxygen Mask Km 15i

Original Scott Oxygen Mask Face Piece with Hardshell Size Regular Narrow

Original Vintage Aero Equipment Corp. Regulator-Diluter Demand Oxygen Pressure Breathing

Original MBU 5 Mask Black Hardshell only Size Regular Narrow Unused Mint Condition

This is a 1990 USAF Aircrew mask assembly quick donning MBU 12 /P oxygen mask

Original Scott MBU 5/P Face Piece ,old stock goods in different sizes