Original U.S. Vietnam War APH-5 Helicopter Pilot Flying Helmet Likely by Sierra Engineering Co. - Incomplete Japanese Uniforms They are nicely marked as

They are nicely marked as follows:

The brass buckle has a lovely mellow patina

There are no markings indicating the size of the eagle

661 Tank Destroyer Battalion

There is a very nice service used condition brown rank tassel attached to the end loop of the tsuka

Original U.S. Vietnam War APH-5 Helicopter Pilot Flying Helmet Likely by Sierra Engineering Co. - Incomplete Japanese Uniforms They are nicely marked asOriginal Item: Only One Available. This is an incomplete 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 but is missing the microphone and the interior padding. Has a functional clear visor and is likely a size large. The original data tag is either under the styrofoam or gone, as we could not find it. But from other