MSA All-Vision Gas Mask
The MSA All-Vision Gas Mask was made for a variety of applications, including law enforcement and industrial use. This version featured a flutter valve and short hose, equipped with an MSA Canister for Acid Gases. This example was made by Mine Safety Appliances in 1943.
Date stamp on flutter valve "10-43"
Leather head harness
Filter sticker top view "Caution Remove seal on bottom of canister before using"
Filter bottom view
Filter label front view "M-S-A CANISTER FOR ACIDE GASES TYPE GMB"
Filter stamp back view "GMB"
Instructions inside box "MSA Industrial Gas Mask with All-Vision Facepiece Instructions for Use and Care"