Please help identify

Thread: Please help identify

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  1. #1
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    Please help identify

    Greetings all. My grandfather passed on this watch that I more than ever would like to learn about. I am afraid to 'crack it open' and view the movement. By viewing the front and back photo, can anyone recognize this watch? Note, the sweeping 'second' broke off.
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  2. #2
    Omega Forum Moderator emmanuelgoldstein's Avatar
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    Re: Please help identify

    Quote Originally Posted by bethsky View Post
    Greetings all. My grandfather passed on this watch that I more than ever would like to learn about. I am afraid to 'crack it open' and view the movement. By viewing the front and back photo, can anyone recognize this watch? Note, the sweeping 'second' broke off.

    On the back 750 stands for 750 parts per 1000 of gold. Chronograph Suisse is the name of the brand. As the year I couldn't tell you precisely. It's looks to be from the 40/50's. The movement inside may look similar to this:

    Last edited by emmanuelgoldstein; May 19th, 2010 at 17:54.
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  3. #3
    Zenith Forum Co-moderator
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    Re: Please help identify

    If Dr. Ranfft's information is anything to go by - and it usually is! - then the movement will certainly look like that. He states that Landeron chronograph movements always look slightly squint eyed - meaning that the minute totalizer is slightly below the line from the chrono second hand to the middle of the crown (i.e. the totalizer is not at exactly 3:00): And I would say that that's the case in the OP's watch.

    Hartmut Richter

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  5. #4
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    Re: Please help identify

    Thank you. I have seen photos of similar Chronograph Suisse watches, however in my photo, the hour legends (9:00 and 3:00) have been partially cut-out by the 2 sub dials, which I have not seen elsewhere. Is this unusual? Can that feature help someone provide more detailed information about this particular watch?
    [IMG]file:///C:/Photos/Canon-SD870/2010-05-19_00-00-01/IMG_1196a.jpg[/IMG]

  6. #5
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    Re: Please help identify

    Hi Hartmut,

    what I called squint-eyed Landeron is this: I never noticed it, before
    a customer returned a pretty expensive Dubey & Schaldenbrand Index
    Mobile for this reason. In fact, independent of the age, a line through
    the pivots of sub scond and minute counter never matches the center
    line of the stem, as demonstrated below on the first model 47 from 1937
    and a pretty late successor 248 from 1960:



    Initially I believed that this was done to allow the inner end of the stem
    to pass the minute counter arbor, for a more durable bearing though.

    But there was a long discussion in another forum, where finally someone
    disassembled few movements and found out that the stem ends before the
    counter arbor, and Landeron simply used a misaligned tool for the base
    plate all these decades long.

    It is just half a millimeter, but for some people it is disturbing, and others
    notice it at least when they know it: The crown position is a bit higher
    than the position of the minute counter. Some case manufacturer align the
    crown position accordingly, but most leave the crown in the center line,
    and this makes the watches anyhow looking squint-eyed.

    Regards, Roland Ranfft

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