Up for Sale is a Vintage US Vietnam Era Flight Helmet. Microphone and Visor (Microphone Untested). Ear Muffs Have Some Wear To Lining Exposing Foam. 2 Hairline Crack on Backside (Shown in 3rd Photo). Please See Photos/Send Questions for More Detail.The item "Vtg Vietnam Pilot Helmet Air Force Flight Visor Sierra APH- 5 Microphone Medium" is in sale since Friday, August 04, 2017. This item is in the category "Collectibles\Militaria\Militaria (Date Unknown)\Air Force". The seller is "dragonpez" and is located in Edmonds, Washington. This item can be shipped worldwide.