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MARTINDALE MSA BREATHING APPARATUS MASK FRESH AIR BA CONFINED SPACE WASK GAS | eBay
Those 70s Masks: The Martindale Protective Mask by dangerousair on DeviantArt
50s 60s Martindale Face Masks, Vintage Health Masks, Made in USA, Novelty Prop Movie Set - Etsy UK
Industrial dust mask made by Martindale. Probably mid-late 1960s. More info in comments - including a somewhat comprehensive timeline of Martindale from 1928 to present day. : r/gasmasks
50s 60s Martindale Face Masks, Vintage Health Masks, Made in USA, Novelty Prop Movie Set - Etsy UK
Martindale Breathing Apparatus Mask BA set Air msa +9m Hose Gas Confined Wask | eBay
Martindale Dust Mask | Gas Mask and Respirator Wiki | Fandom
Moleroda Dust Masks
martindale protective masks | Safetyshop
Face Mask 2000 — Alison Counsell
NW London TimeMachine on X: "Martindale Protective Masks from the 1950s. Made at Westmoreland Road, NW9, which was actually in Queensbury. The factory would have been on the site where Morrisons is
Face Mask Dust Vintage Hardware Tools Martindale Protective Mask Movie Prop - Etsy UK
Martindale Dust Mask | Gas Mask and Respirator Wiki | Fandom