Elite Spartan Tactical Concept - Good Old Days with the Avon S10 Gas Mask. The Avon S10 is the predecessor of the Avon FM12 and was the replacement mask for the S6.
S10 army gas masks Stock Photo - Alamy
NEW Original British Army Nbc Cbrn Avon FM12 Respirator GAS - Etsy
My first gas mask. The British S10 gas mask. : r/gasmasks