Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1971 - Size X-Large Technical Books a B-29 was maneuvered over

a B-29 was maneuvered over a bomb loading pit and then taxied to Runway Able at North Field

It uses several technologies developed within Israel

"I could see silver streaks coming out from my plane

however the leather is dried and stretched out

It was then  reissued in WWII for the M1 Garand Rifle

Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1971 - Size X-Large Technical Books a B-29 was maneuvered overOriginal Item: Only One Available. This is a United States Helicopter Flight Helmet type SPH 4 made by Gentex. The helmet is in overall excellent, complete condition with the liner, headset, tinted visor and boom microphone. This is a rare Vietnam era original helicopter helmet in wonderful complete condition! The Sound Protective Helmet 4 (SPH 4) is a derivative of the US Navy SPH 3 and was used by the US Army since 1970. The SPH 4 is a single visor