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
MARTINDALE MASK £12.50 - PicClick UK
Face Mask 2000 — Alison Counsell
VINTAGE RETRO MARTINDALE protective face masks collectable x2 un-used £10.00 - PicClick UK
Martindale Dust Mask | Gas Mask and Respirator Wiki | Fandom
Martindale Dust Mask | Gas Mask and Respirator Wiki | Fandom
Martindale Breathing Apparatus Mask BA set Air msa +9m Hose Gas Confined Wask | eBay
Moleroda Dust Masks
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