British C1 General Civilian Respirator
The British C1 General Civilian Respirator used a thin rubberized fabric facepiece with a single plastic lens, and a filter fixed to the front. They were made for civilians during World War II. This example was made by Henley in 1938.
Manufacturer and date stamps "10669 HENLEY 8-38"
Date and lot stamps "POPPE 29-4-38" "LOT 2010"
Size stamp on head strap "MEDIUM"