I know that these Favre watches often originate from India and are regularly er, modified. I just dug out this one from a bag where it's been lurking for a couple of decades - "10 year" rolled gold, approx 23mm movement. The engraving on the back-plate is quite amusing - obviously top-grade military work... I can't identify the movement and thereby its age as the Favre reproductions in the PDF of the Paulson catalog which I have are illegible.

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