![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)
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
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![MKIV GSR with Type E MkV. The date of the filter, September 1939, is interesting as I didn't think they were making MkV filters this early. Some info in comments. : r/gasmasks MKIV GSR with Type E MkV. The date of the filter, September 1939, is interesting as I didn't think they were making MkV filters this early. Some info in comments. : r/gasmasks](https://preview.redd.it/ejpe4e9kkfz31.jpg?width=640&crop=smart&auto=webp&s=412562766b68ea3515bb9ef402259746ac379de8)
MKIV GSR with Type E MkV. The date of the filter, September 1939, is interesting as I didn't think they were making MkV filters this early. Some info in comments. : r/gasmasks
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