Recently acquired a second 3S mask. One by Auer, one by MSA. The Auer mask carries far less markings compared to the MSA, but Auer is mentioned on both masks. : r/gasmasks
MSA 805408 Advantage 1000 Series Full-Facepiece Respirators - Size: Medium, Hycar, Twin-Port, Reusable Gas Mask, Without Filters, MSA Advantage Cartridge Compatible: Papr Safety Respirators: Amazon.com: Tools & Home Improvement
MSA Auer full face mask 3S silicone D2055718 | Full masks | Head protect | Clever-AS-Technik - Industrial safety
MSA Auer 3S : r/gasmasks
MSA 10051287 Millennium Riot Control Gas Mask - Size: Medium, Color: Clear, Reusable Respirator With Replaceable Components, Durable Respiratory Protection, For Use With Riot Control Cannisters: Safety Masks: Amazon.com: Tools & Home
MSA Safety Works Full-Face Multi-Purpose Respirator | Safety Mask | Call us +971-4-229-3533
Pittsburgh's MSA Safety repurposing industrial masks to use against covid-19 | TribLIVE.com
G1 Full Face Mask Respirator | MSA Safety Shop
Genuine MSA AUER brand Black MSA Full Face mask 3S Gas mask breathing apparatus | eBay
Airgas - MSA457126 - MSA Medium Ultravue® Series Full Face Air Purifying Respirator