British Mk IV Service Respirator
The British Mk IV Service Respirator was made of tan fabricized rubber, with round glass eyepieces and a central speech diaphragm. It had a long corrugated hose leading to a large box filter. The design was very successful, and copied by several other countries. This example was made by Avon in 1941.
Stamps under chin
Stamp on cheek "L 31"
Date stamp on cheek "6Z" "16/9/41"
Model, date, and patent stamps on head harness "No4 III Z 9/41 PAT. Nos 296493 & 305080"
Filter stamp top view "2 11/7/41 AT"
Filter stamps bottom view "No 4A BARNSLEY CANISTERS BARNSLEY 1941 VS EVI"
Filter front view
Filter side view
Bag for MkIV