U.S. Army M3 Diaphragm | Gas Mask King

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

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

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

Stamp on speech diaphragm
"N"

Stamp on head strap

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

Filter bottom view

Filter side view

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

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