WW2 M-1 Helmet Liner- Westinghouse.
Here is an original WW2 M-1 helmet liner.
The liner is made by Westinghouse and the OD-3 cotton suspension is held to the liner by un-painted A-washers.
One of the rivets has been replaced recently, but very well.
The overall condition would described as unissued and the exterior paint is very good and original.
A good WW2 example...