A lot of two German WWII gas mask canisters for Wehrmacht soldiers. The models of 1930 consist of a filter and a gas mask. The cylindrical case is made of metal. The lid on the pin hinge is closed with a spring latch on a braided strap. The 1930 and 1938 models were compatible with each other. Were used during the Second World War. German Militaria And War Memorabilia Collectibles.