Cortebert Watch

Discussion in 'Wrist Watches' started by bluetime, Sep 23, 2019.

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  1. bluetime

    bluetime Registered User

    Aug 20, 2019
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    I need some help identifying this Cortebert watch if possible. It's approx 29mm in diameter including the crown. Also if anyone knows how to open the case that would be helpful. Any info is appreciated.

    Cortebert 1.jpg Cortebert 2.jpg
     
  2. 4thdimension

    4thdimension Registered User

    Oct 18, 2001
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    Hard to tell with the pics provided. My guess would be a snap off back that would open by prying with a blade. Look carefully for a seam where the back meets the front of the case and for a slight widening of that seam where a blade might be inserted. If you have any doubts though you should bring the watch to a watchmaker or jeweler. Merely opening the watch should be a simple thing for them and it might save you from an unfortunate "oops". I do believe I can see hallmarks on the wire lugs which would indicate the case is made of some variety of precious metal.-Cort
     
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  3. bluetime

    bluetime Registered User

    Aug 20, 2019
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    So I was able to open it. The movement is marked CORT. 673 17 Jewels and the inner case 14K 0,585 with 129 below it. Not sure what the 129 means. Anyone know anything about this caliber? I'm searching online, but haven't found much so far...
     
  4. bluetime

    bluetime Registered User

    Aug 20, 2019
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    Apparently the 129 is the "Poincon de Maitre" or Punch of the Master, which relates to the case maker. It's a number stamped inside a hammer head shape (no handle) if anyone is curious. I found a helpful website that explains all of this and provides a reference chart as well. So this particular case was made by JSG SA in La Chaux-de-Fonds (Switzerland) with a registration/recording date of 21.07.1934. Interesting stuff.

    I'd still like to know more about the movement though. I can't find anything on 673...
     
  5. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    Western NSW, Australia
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    Remarks
    differences not known between 573, 581, 663

    family/generations:
    571, 673: 10.5'''
    573, 581, 663: 9.75'''
    661: 9.75''', differing bridge layout
    575: 10.5''', higher
    577: 9.75''', higher
    583: 10.5''', higher, bigger barrel
    665: 10.5''', Option sweep second

    Example, year: signature; shock device
    1942: Cortebert ***, Cal.663. Swiss Made, 15 Jewels; Incabloc
    From: bidfun-db Archive: Watch Movements: Cortebert 663
     

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