Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1969 - Size X-Large Spanish Militaria The serial number is #504614

The serial number is #504614

and a slight bend at the tip

This is an original early Queen Elizabeth II "CROWN" over "E

The grip is solid

Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1969 - Size X-Large Spanish Militaria The serial number is #504614Original 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 (speakers detached), clear 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