Original U.S. Vietnam War APH-5 Helicopter Pilot Flying Helmet by Sierra Engineering Co. - Dated 1968 Category_Blunderbuss and is maker stamped 44

and is maker stamped 44 evy on the shaft

The bracelet measures roughly 7” when laid out

It seems that McGrath passed away in 2005

80% case-hardening

Original U.S. Vietnam War APH-5 Helicopter Pilot Flying Helmet by Sierra Engineering Co. - Dated 1968 Category_Blunderbuss and is maker stamped 44Original 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 retains its straps and data label. Has a functional clear visor as well as boom mic and issued hearing protection. Size is a LARGE and overall condition is very good. The original data tag reads: STOCK NO. FSN 8415 782 3037 APH 5 HELMET, SIZE