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Got Me Under Pressure

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.  

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A Game of Crown Molds

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?

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