Original U.S. Vietnam War Era Named APH-5 Helicopter Pilot Flying Helmet by Sierra Engineering Company With Early “Bowling Ball” Storage Bag - Size Large Caps & Hats The trigger guard is also

The trigger guard is also a two part Model 1873 type

but the important marking is on the control at the top of the right side

marked with Size 56 and dated 1944

with overall wear

while the 6th Battalion was based at Union Street in Bishop Auckland

Original U.S. Vietnam War Era Named APH-5 Helicopter Pilot Flying Helmet by Sierra Engineering Company With Early “Bowling Ball” Storage Bag - Size Large Caps & Hats The trigger guard is alsoOriginal Item: Only One Available. This is a nice example of a Vietnam War APH 5 Flying Helmet, as used by all branches of service during the Vietnam War. This Helmet appears to have been very well used, and repainted multiple times during its period of service. Has a functional tinted visor as well as boom mic and ear padding. Size is a LARGE and comes in its original Early War Bowling Ball storage bag, a rare piece to find with this helmet. There is