CESCO Fume Mask Respirator + Storage Box – 1940’s Chicago Eye Shield CompanyVintage CESCO (Chicago Eye Shield Company) Fume Mask Respirator + Original Black Metal Carrier / Storage Box. Included are two unused cartridges and one open cartridge box, but the filter is still inside and unused. The original instructions are still attached to the box lid (see photo). The CESCO Fume Mask is a very early American industrial safety respirator that was extremely advanced for it’s time. CESCO (Chicago Eye Shield Company) produced safety equipment, primarily safety glasses and respirators. The respirators they designed were extremely advanced for the era and very expensive. CESCO was a relatively small company and produced a very limited quantity of these masks. They are extremely rare to find.