U.S. Army M3 Diaphragm Gas Mask

The U.S. Army M3 Diaphragm Gas Mask was produced in gray (green) rubber, first with black metal parts and later with blue/green metal parts.  This example was made by General Tire & Rubber in 1941.

PATENT

 

Similar masks in my collection:  U.S. Army M3A1 Diaphragm, U.S. NORBA Type A-3, U.S. ND Mk IV

Rubber stamp
Rubber stamp

Manufacturer, date, and lot stamps on chin "LOT C1 6-41 GENERAL E42 R92" "M10" "C5"

Rubber stamps
Rubber stamps

Manufacturer and date stamps on flutter valve "CRCo 1-41" "76"

Stamp
Stamp

Stamp on speech diaphragm "N"

Stamp
Stamp

Stamp on head strap

Filter
Filter

Filter stamps top view "US" "LOT-C711-9 CWS J&J A" "51 55"

Filter
Filter

Filter bottom view

Filter
Filter

Filter side view

Carrier
Carrier

Bag for "US ARMY SERVICE GAS MASK" "MASK, GAS RECONDITIONED FOR TRAINING"

Carrier
Carrier

Stamp inside carrier "MIN-P-100-1 L.R.G.C C-891"