Original HGU 55/P Size Large with MBU 20/P Oxygen Mask Size Medium Wide

Original Gentex SPH-5® helicopter helmet (size X-Large, manufactured in 1990)

This is a orignal HGU 55/G helmet with MBU 5/P mask size small narrow

Original HGU 2/P Flight Helmet Size Large, Single Visor

Original HGU 55/P LWT Size Medium with MBU 12/P Oxygen Mask Size Regular

Original Gentex HGU-55/P fighter pilot helmet X-Large with a Gentex MBU-12/P oxygen mask (Size: Long)

This a original Factory White HGU 26/P   Helmet size Large with dual visor clear and dark used probably at Belgian Air Force

This is a orignal HGU 2AP/G flight helmet came from an retired German Airforce Pilot

Original US Army Gentex SPH 4 B Helicopter Flight Helmet Size X-Large

Original USAF P-4A Flight Helmet Date 1953 with A 14 Mask,