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Help on a vintage mono pusher chronograph

  1. durri70 Jan 22, 2020

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    hello to all :)
    I never had a watch project and don’t know if it’s really worthy or not. I found this nice caliber and I though that could be the one to star a project . Any thoughts from what watch could be? Or what caliber may be ?
    That’s all the pics I have so far
    Thanks
    3B69A544-8FBE-48A1-851F-8E6BE1309ABE.png 910FF021-A8C4-4D32-9C8E-25ABEDADC768.png 2575345D-CC78-420F-9E4B-D5B453F9DDBA.png 3221896E-CE1B-4416-AB8C-487DB63FE53D.png E0120875-9607-4423-B792-9DB0A8C9514D.png
     
  2. ChrisN Jan 22, 2020

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    On the mainplate next to the serial number, you can see RFV and an arrow identifying it as “Robert Frères, Villeret”, formed in 1858 who later became Minerva.

    Have a look at the Minerva calibres to see if one looks the same. I did a 19/9 CH from the early twenties and the serial was about 1250000 so, your one is probably 1930s.

    Good luck, Chris
     
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  3. dx009 Jan 22, 2020

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    The crystal is going to be easy to get. The dial could be made but it would be nice to find the original model to replicate it (provided that you want to do that). Is it missing the hinged case back ? That one would be the most complicated thing to make... (well, not for someone good at making watch parts, but it won't come cheap)
    That's a potentially good and interesting looking watch. It's good that you at least have the case, crown and movement. Sure looks to be a 30s-40s case...
     
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  4. durri70 Jan 22, 2020

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    Wow
    Happy to hear that it’s a Minerva
    I’ll keep reading your advice and from there See what to do. Case is 36,36 including crown
    Thanks again
     
  5. durri70 Jan 22, 2020

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    Some more pics

    BE8F87E1-FAD9-45BB-976C-A03B04EB0CCB.png 60C2F58D-CDBB-4CDB-9639-8D7FB6B9A9D1.png 19EE44BC-98BD-421F-BD6A-006AC2539031.png
     
  6. dx009 Jan 22, 2020

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    I forgot to mention that it is missing the hour wheel. They sometimes do as those can just fall off if you're not careful. I'm guessing that the hour wheel of other similar sized movements might fit. Not a certainty though.
     
  7. durri70 Jan 22, 2020

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    Thanks for sharing your knowledge, I asked him to push on the crono and send video.... it’s seems that need to be checked as the Chrono not running :-(
     
  8. dx009 Jan 23, 2020

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    The photos aren't that great so I can't tell whether it has other problems. The missing wheel does not affect the chronograph function but I think that I see a few other issues with the movement. Some gears look like they need to be realigned or something.

    It's possible that a complete servicing might fix everything but it is also possible that new parts might be needed.
     
  9. Radiumpassion Jan 23, 2020

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    Depending on the size, but it looks like a Minerva 13-20 movement. I wold
    do lots of research before buing this because it will probably be a difficult
    project to complete.....
     
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  10. durri70 Jan 23, 2020

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    True and without being sure about the caliber working perfectly makes me scare as not easy to find parts
    Thanks