CESCO Respirator 90-F
The CESCO Cat. No. 90-F Respirator was a simple half-mask with chin exhale valve and a grille that screwed off to replace the filter pads. Made by Chicago Eye Shield Company.
Similar masks in my collection: Pulmosan Respirator RA-110, Pulmosan Respirator R-17, MSA GasFoe Respirator, MSA ClearVue DustFoe Respirator
Manufacturer and BoM approval stamps "CESCO" "BM 2121" "Made in U.S.A."
CESCO Cat. No. 90-F Respirator for Dusts and Mists
Box top view "CESCO Respirator Cat. No. 90-F"
Box front view "CESCO Respirator Cat. No. 90-F"
Boxes back view "Fitting"
Box side view "Permissible Respirator for dusts, pneumoconiosis-producing mists, and chromic acid mist"
Filter box front view "CESCO" "Cat. No. 90-1 Filters For CESCO Cat. No. 90-F Respirator" "Quantity 5"
Filter box back view "Permissible Respirator Filter for dusts, pneumoconiosis producing mists, and chromic acid mist"
"1 - CESCO No. 90-2 Exhalation Valve Flap 1 - CESCO No. 90-3 Inhalation Valve Flap"