![Hungarian soldier wearing a new type of gas mask with a microphone to enable conversation during a gas attack. Nov. 10, 1939 Stock Photo - Alamy Hungarian soldier wearing a new type of gas mask with a microphone to enable conversation during a gas attack. Nov. 10, 1939 Stock Photo - Alamy](https://c8.alamy.com/comp/D18KFD/hungarian-soldier-wearing-a-new-type-of-gas-mask-with-a-microphone-D18KFD.jpg)
Hungarian soldier wearing a new type of gas mask with a microphone to enable conversation during a gas attack. Nov. 10, 1939 Stock Photo - Alamy
![Original German WWII Named M30 2nd Model Gas Mask with Filter & 1939 D – International Military Antiques Original German WWII Named M30 2nd Model Gas Mask with Filter & 1939 D – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/ONSV7962__14.jpg?v=1600952799)
Original German WWII Named M30 2nd Model Gas Mask with Filter & 1939 D – International Military Antiques
![Hi all! This is my mk4 gsr, mace in 1939, along with the filter dated 1938. I've written the history of the mask down in the comments : r/gasmasks Hi all! This is my mk4 gsr, mace in 1939, along with the filter dated 1938. I've written the history of the mask down in the comments : r/gasmasks](https://preview.redd.it/hi-all-this-is-my-mk4-gsr-mace-in-1939-along-with-the-v0-06pp1snovwe91.jpg?width=640&crop=smart&auto=webp&s=00aa37286f3187ab9a3fbb9d2bb5796ce0f8d3f0)