What is the date and manufacturer of this m1 helmet.

[ThatOneNewGuy816]

I recently picked this up, and it is my first helmet I've owned. It has a westinghouse electric liner, and it appears to have been painted at least 3 times in its life cycle. The helmet has a marking of maybe M - 157A, and it is a rear seam from what I could figure out. 

[elh1311]

Post-WWII McCord, from the 1950 contract I believe, with a WWII Westinghouse liner. 

[dmar836]

Welcome to the forum. Why not introduce yourself in the New Member section?