U.S. Army M5-11-7 Assault Gas Mask

The U.S. Army M5-11-7 Assault Gas Mask was created to be a lightweight combat mask, taking many cues from the successful design of the British Lightweight Anti-Gas Respirator. It used a modified black M3 faceblank with a 60mm M11 filter canister mounted directly to the cheek, and was carried in a waterproof rubber bag. The M5 is famous for being the gas mask carried troops storming the beaches of Normandy on D-Day. This example was made by Daytona Rubber in 1944.

PATENT

Manufacturer and date stamps under chin
"44"
"D.R.CO."
"M1C416"
"418"

Size stamp on forehead
"US U"

Stamp inside mask
"GRM"

Lot and date stamp on exhale valve cover
"TH M2C5 LOT III 9-42"

Stamp on head strap
"(?)"

60mm filter connector
"SCOVILL"

M11 filter top view

M11 filter stamps bottom view
"US
M11"
"C"

M11 filter stamp side view
"LOT B.F.G. 2-5-5
HD3Z6M2"