ABC M17 gas mask, made in 1962 by D.T. (not sure what the exact company was, but I suspect it was Dayton Tire and Rubber Company), with the M6 hood, sealed M13
Czech Rep. - My Gas Mask
Swiss SM-3, Rare NBC CBRN Gas Mask Respirator
U.S. Army ABC-M17 Field Protective | Gas Mask King
U.S. Army ABC-M17 Field Protective | Gas Mask King
Military Gas Mask PDE1 Professional High Protection Brand New Chemical | eBay
Gas Mask - U.S. Armed Forces M17 Standard (W/ Drinking Tube) - Hero Outdoors
M17 Gas Mask Filter Set | Armynavysales Army Navy Sales