Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1971 - Size X-Large Crimean War and was fitted when a

and was fitted when a sleeve on the front that attaches to the front fitting

The cuff style collar has two “Scottish Thistle” insignias and the front has all eight British General Service buttons

) From production number 4274

Originally known as the Aeronaut Badge

a "rear seam" design was implemented

Original U.S. Vietnam War Helicopter Pilot Gentex SPH-4 Helmet Dated 1971 - Size X-Large Crimean War and was fitted when aOriginal 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