M11 Vintage gas mask filter in tin for respirator vintage

Description

M11 Vintage gas mask filter in tin for respirator vintage, Item Description, Original U.S army surplus., These are NEW/UNISSUED M11 gas mask filters for the M9 gas mask., They've been in storage for a long time but in AIR TIGHT TINS., The tins open with a metal key as can be seen in the pictures., Inside you have a vintage gas mask filter – UNUSED!,