U.S. Army M3-10A1-6 Lightweight Service Gas Mask

The U.S. Army M3-10A1-6 Lightweight Service Gas Mask was produced in both black and gray (green) rubber.  This example was made by Goodyear in 1944.

PATENT

Rubber stamp
Rubber stamp

Manufacturer and date stamp on chin "44 GDYR 386"

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Filter model stamp top view "US-M10A1"

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Filter lot stamp top view "26-4-9 SG C"

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