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.
Similar masks in my collection: Czech Vz-33, Czech M-35/S, French Le Gallus, Yugoslavian M3, British Mk I
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
Stamps inside bag "VII WHITELEY'S 1942" "44"