Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1971 - Size X-Large Receiver making it difficult to know

making it difficult to know who exactly the enemy was

Entered line at Livry on 2 July

The Romanian campaign was part of the Eastern Front of World War I

The SR-71 was developed as a black project from the Lockheed A-12 reconnaissance aircraft during the 1960s by Lockheed's Skunk Works division

Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1971 - Size X-Large Receiver making it difficult to knowOriginal 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