Sample 1:

Very faded outside, but inside is still a bright “pea green”.

Usage Photos:

May 23, 1940: French prisoners from the 158e Regiment d’Infanterie (43e Division Infanterie) captured by the German Infantry Regiment 469 (Part of 269th Infantry Division of the Wehrmacht) in Thulin, Belgium (from https://commons.wikimedia.org/wiki/File:Thulin_23_May_1940_-IR_469-_French_soldiers_from_158e_RI_surrendered.jpg).

These gas mask bags were widely issued to the French military, anticipating a repeat of WW1 gas warfare that never materialized in 1940.