Help identifying my grandfather grand prix 1900
Like Tree1Likes
  • 1 Post By Hartmut Richter

Thread: Help identifying my grandfather grand prix 1900

Results 1 to 6 of 6
  1. #1
    Member
    Join Date
    Mar 2020
    Posts
    2

    Help identifying my grandfather grand prix 1900

    Hi everybody, i've just got from my grandfather a Zenith Grand Prix 1900, but couldn't find a way to get more information about it (year, jewels). I have taken some pictures, and managed to open the backplate to see the mechanism, here are te pics.

    Name:  WhatsApp Image 2020-03-14 at 21.01.31.jpeg
Views: 28
Size:  118.2 KBName:  WhatsApp Image 2020-03-14 at 21.01.32.jpeg
Views: 31
Size:  131.1 KBName:  WhatsApp Image 2020-03-14 at 21.01.32 (1).jpeg
Views: 36
Size:  115.4 KBName:  WhatsApp Image 2020-03-14 at 21.01.31 (1).jpeg
Views: 28
Size:  110.6 KB

    Thanks!!

  2. #2
    Member sempervivens's Avatar
    Join Date
    Sep 2006
    Posts
    4,393

    Re: Help identifying my grandfather grand prix 1900

    Welcome to the forum and congratulations on your heirloom Zenith, which seems to be in excellent condition. It can be dated ca. 1940 (give or take a year). Others will be able to tell you more on the movement.
    Vanitas vanitatum et omnia vanitas, praeter ...

  3. #3
    Member georges zaslavsky's Avatar
    Join Date
    Feb 2006
    Location
    Croissy sur Seine, France
    Posts
    12,855

    Re: Help identifying my grandfather grand prix 1900

    nice and clean zenith
    Omega the sign of Excellence since 1848. Jaeger Le Coultre Horlogerie de Luxe depuis 1833
    22 times Olympic games timekeeper, Nasa watch supplier and holder of several world records of precision, Omega has the world's trust
    Omega and Rolex for ever
    Eterna Nothing but Watchmaking since 1856
    Zenith Swiss Watchmaking and Chronometry champion since 1865

  4. Remove Advertisements
    WatchUSeek.com
    Advertisements
     

  5. #4
    Zenith Forum Co-moderator
    Join Date
    Feb 2006
    Posts
    17,763

    Re: Help identifying my grandfather grand prix 1900

    Welcome to Watchuseek! That is a nice looking watch, indeed from ca. 1940 and the movement is probably a Cal. 18-28-3 A (I think I can see the vestiges of am "18" under the balance wheel). Since the centre gear is in a bushing, it should have 15 jewels.

    Hartmut Richter
    watch1440 likes this.

  6. #5
    Member
    Join Date
    Mar 2020
    Posts
    2

    Re: Help identifying my grandfather grand prix 1900

    Thanks for the reply!

    Indeed it's pretty clean, it works, it has been sitting on a shelf for 30 years, but never knew the details of it, thanks a lot for the information!

    Should i send it for further clean to keep it working and looking good? as far as i knew, never been cleaned or at least in the last 30 years.

    Thanks!!!

  7. #6
    Zenith Forum Co-moderator
    Join Date
    Feb 2006
    Posts
    17,763

    Re: Help identifying my grandfather grand prix 1900

    If you aren't going to use it or otherwise keep it running, there is no point in servicing it - it costs 100-150 Euros per service (depending on where you go - Zenith will be more expensive, smaller places might even do it for 70-80 Euros) and it will not get damaged in a clean, dry place without a service if it isn't wound up more than rather occasionally. If you will wear it more or less regularly, it should be serviced, though.

    Hartmut Richter

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •