time trial watch? or what? Weird Patek

Discussion in 'European & Other Pocket Watches' started by Jeff Hess, Jan 15, 2020.

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  1. Jeff Hess

    Jeff Hess Moderator
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    #1 Jeff Hess, Jan 15, 2020
    Last edited: Jan 15, 2020
    thoughts? on these weird marks? [​IMG]

    patektrials.gif 20200115_184524-jpg.jpg
     
  2. Jeff Hess

    Jeff Hess Moderator
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  3. Warwian

    Warwian Registered User

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    What type of balance does it have?
     
  4. Dr. Jon

    Dr. Jon Moderator
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    What I see is an attempt to change a serial number. As Warwian suggested, a look at the balance area would help. Trial watches usually had Guillame balance and the serial number was engraved near teh balanve as well as on the bridge. If that number is there and different there has been some funny business.
     
  5. LloydB

    LloydB Registered User

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    I agree... appears to be '610'
    overstruck to become '680'

    Not to say it couldn't have been done
    at the factory, for whatever reason.
     
  6. Jeff Hess

    Jeff Hess Moderator
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    i saw that.. looks factory to me... for some reason... no, I mean the weird Pi symbol before serial number and I checked for Guillaume numbers already. just curious as it brought stupid money at an on line auction. s-l1600.jpg
     
  7. LloydB

    LloydB Registered User

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    Abbreviation for "Number" opposite 68001
    I\I (with an obscured cross-bar) superscript o
     
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  8. Warwian

    Warwian Registered User

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    I don't think this is an observatory chronometer. I have seen quite a few of them made by Patek and they are all of much higher quality than this example, especially when it comes to the balance (even though it is hard to make out based on the picture).
     
  9. Jeff Hess

    Jeff Hess Moderator
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    learned something today. owned thousands of pateks...never seen the /\/ thing before. movement only brought a rediculous sum on line.
     
  10. JTD

    JTD Registered User

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    If you look carefully, you will see this is nothing unusual, just No., as LloydB says. The diagonal cross bar is faintly stamped, it is clear enough if you look closely.

    JTD
     
  11. Dr. Jon

    Dr. Jon Moderator
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    I think the answer to the mystery is that the plate with the engraving has been replaced or redone after being marred. The numbers are different size, something that would not have happened at the factory as well as the porr strike for "N" punch. This plate is removable by taking out the screws holding it to the main spring bridsge. It may have occurred as part of a mainspring barrel service when the bushings for the barrel arbor were replaced.
     
  12. Dr. Jon

    Dr. Jon Moderator
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    At the risk of flogging a dead horse, one more theory.

    The plate with the engraving has to removed to replace or service the barrel winding gear, which often suffers broken teeth. The plate and wheel may have been replaced. If these came from parts, the plate would have been resurfaced and renumbered.
     

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