Big Red Says
WWII M-1 helmet liners made by the High-Pressure Method
Seven companies adopted the high-pressure method. Each company was required to have a mark molded into the interior crown to identify each mold cavity along with a symbol to identify the manufacturer.
International Molded Plastics, Inc.
High-pressure method M-1 helmet liners
What exactly is the “little man” mold in mark inside these liners supposed to be?
Who's th' wise guy!
U.S. Navy Steel Helmet Mk. II
The Mk. - 2 was specifically designed for Naval telephone talkers to use in fixed battle stations.
Anatomy of the M-1 helmet chin strap 1941 - 1943
This 1-Point Lesson gives you a quick "what you need to know" about the M-1 helmet Infantry chinstrap.