Quarantine Coloring Book
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.
Similar masks in my collection: U.S. Army M3A1 Diaphragm, U.S. NORBA Type A-3, U.S. ND Mk IV
Not For Sale