Quarantine Coloring Book
Not For Sale
The MSA ClearVue DustFoe Respirator was a half-mask with a flutter valve and a clear plastic cartridge so you could see when it was time to change the filter pad. Made by Mine Safety Appliances.
Similar masks in my collection: MSA GasFoe Respirator, Pulmosan Respirator R-17, Pulmosan Respirator RA-110, CESCO Respirator 90-F