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 Category_Martini-Henry Parts The butt plate tang is

The butt plate tang is U

The original silk hat band

so condition does vary

with the other numbers being the asset number

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 Category_Martini-Henry Parts The butt plate tang isOriginal Item: Only One Available. This is a solid 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 issued hearing protection. Size is a LARGE and overall condition is very good. There is an original manufacturers label is still present