I also have a Jlc Chronometre calibre 906. The question is that my watch is a no date..... the mechanism is the proper calibre 906 and hasnt been modified do the no date face. The dile looks to be with the right wear for a 1970's watch, the only question in my head is that it only has Swiss Made on de bottom and not T Swiss.... have heard that some prototypes didnt always come with the T...... anyone has some information on the matter? I have never seen a No D



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