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I picked this up on a recent visit to Paris. I'm wondering if anyone can help with the maker? The only mark I could find was on the front plate under the dial. I have attached a photo of the mark, as well as the dial & movement.
I agree that this is some type of early Valjoux. It is probably an early version or a precursor to the VJ 23... I just want to say that the dial is a work of art. Congratulations for having the great taste to buy this wonderful work of art. This dial can time almost anything a tool watch could want to time. What a beauty.