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  1. Tyro

    Tyro Nov 19, 2018

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    I bought a watch online recently (my first bumper). They listed its reference as 2643S.C, and serial as 11162322. When I got it home and opened it up, this serial number was on the caseback. The calibre (351) was numbered
    12674441. I was wondering if the difference in numbers had any significance. I had always assumed that one could date a watch (approximately) from the serial number on the calibre - should it be the number on the case back?
    In date terms it moves me from ca 1947 to ca 1950, not a big difference, but it got me wondering...
    I would be interested in your views...
    2018-11-19 11.17.52.jpg 2018-11-19 11.03.42.jpg 2018-11-19 11.04.45.jpg 2018-11-19 11.05.01.jpg
     
    2018-11-19 11.06.37.jpg
  2. BlackTalon

    BlackTalon Nov 19, 2018

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    The serial # is the one on the movement. The numbers on the caseback are the case designators.
     
  3. Tyro

    Tyro Nov 19, 2018

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    Thanks BT - the auction house therefore should really give the number on the movement I guess
     
  4. Dan S

    Dan S Nov 19, 2018

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    The number on the movement is conventionally used as the serial number on most tables you will find. It’s also what Omega uses for Extracts. A good illustration of why photos are better than the word of a seller. Of course it matters little in this case, as the OP points out.