Was Baume somehow related to B&M? Anyway, interesting caseback with the word Tropicalized. Anyone seen that before? Perhaps it means sealed against humidity? Even though it also says waterproof.

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Interesting little watch with an FHF movement. I have seen tropicalized on some Hamilton military watches. Not sure exactly what it means.

 

Thanks for the info. It’s an FHF 73-4n from Rannft

 

Here is my Baume watch and some info I found about them. They are from the same family as B & M and were the UK agent for Longines, you see a lot of Longines movements in their cases.