Adrian Davies kindly sent me this photo of 3 gas detection brassards. All came from a British lightweight respirator bag.

On of the markings was already in the list, which is the first time I have come across an identical marking twice.

Please keep sending me the markings of your brassards, so I can add them to the list. Maybe a pattern (other than month/year) emerges that can tell us a bit more.

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