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Unknown caliber for Zenith chronometer movement

  1. Omega world Jan 18, 2019

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    Please I need your help to identify this Zenith movement .
    Which caliber could be?
    Thanks.
     
    IMG_20190118_164056.png
  2. gatorcpa ΩF InvestiGator Staff Member Jan 18, 2019

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    Zenith movements of this era (pre-1940) are identified by their size in lignes. A good number of these movements have the "snail-cam" regulator, which is a trademark of Zenith.

    https://www.convertunits.com/from/mm/to/ligne+[France]

    Differences in fractions of a millimeter may mean it is a totally different caliber. You would need to find an old reference book on Zenith movements. Some of these calibers can only be identified by the position of screws.

    This is impossible to see from an internet photograph.
    gatorcpa
     
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  3. Omega world Jan 18, 2019

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    Thank you,sir ,for your answer....the movement belongs to a gold case which is gone,and I want to find an anonymous case for him....
     
  4. CaptainWinsor Jan 18, 2019

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    Here’s an example from Rossler 25E0378E-A507-48DE-8098-CB43B4309839.jpeg
     
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  5. Omega world Jan 18, 2019

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    Thank you,I Will make my research.