Original U.S. Vietnam War Helicopter Pilot Gentex AFH-1 Helmet - Unissued Condition Percusion Muskets Inside the second oval is

Inside the second oval is CARL EICKHORN above and SOLINGEN below

However the black finish is still present

The bottom of the barrel is fully proof marked

so it may have been reduced in size

Original U.S. Vietnam War Helicopter Pilot Gentex AFH-1 Helmet - Unissued Condition Percusion Muskets Inside the second oval isOriginal Item: Only One Available. This is a Vietnam War era United States Helicopter Flight Helmet type AFH 1 Helmet which was most likely manufactured by Sierra Engineering Company in size medium. The helmet is in overall excellent condition with the liner, headset, boom mic, and clear visor. Note that the helmets cord is still wrapped around a cardboard tube, just as it left the factory in the 1960s! This helmet does show some signs of light wear