This is a MSA Industrial Gas Mask set, manufactured by Mine Safety Appliances Co., Pittsburgh, PA. This rare find includes the Original gas mask with intact lenses and straps, Flexible hoses and original filter/canister • Heavy-duty red metal case with “INDUSTRIAL GAS MASK” and MSA logo. Approximate age: 1940s–1960s • All components are original. The set shows signs of age and use, (not by me obviously) making it an excellent piece for collectors, a nice decorative piece, or a historical display.