Vintage longines chrono
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  1. #1
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    Vintage longines chrono

    I’d like some help identifying this watch from my grandfather. I’ve seen similar online but not this exact one. I opened the case back and there is a 17 jewel movement unadjusted a serial number 6129299 and low on it. Signed Longines Watch Co., Swiss. It’s is also marked Brevet by the center seconds wheel.
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  2. #2
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    Re: Vintage longines chrono

    This one picture will help no one, unless they have that exact watch. Even then, if you had the case back open, why didn't you take a picture of the movement and inside case back? Makes no sense to me

    The more pictures, the more helpful we can be
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  3. #3
    Member Dan S's Avatar
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    Re: Vintage longines chrono

    Could you please post a high resolution photo of the movement.
    -- Dan (formerly known as @badbackdan)
    ------- @oldwatchdan on Instagram -------

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  5. #4
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    Re: Vintage longines chrono

    Quote Originally Posted by tinknocker View Post
    This one picture will help no one, unless they have that exact watch. Even then, if you had the case back open, why didn't you take a picture of the movement and inside case back? Makes no sense to me
    Well ... this particular dial is no help at all for identification purposes since it has apparently been refinished in the past. However, the lack of any totalizer sub-dial suggests that it is some sort of chronostop as opposed to an actual chronograph, perhaps with a cal. 12.68z inside.
    -- Dan (formerly known as @badbackdan)
    ------- @oldwatchdan on Instagram -------

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    Any help?
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  7. #6
    Member Dan S's Avatar
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    Re: Vintage longines chrono

    Some brief research shows that this is sometimes called a "stop-second" or a "flyback". In original condition these are very desirable. I think that the red hand accumulates minutes.

    The photo is very poor, is it stainless, gold, gold-plated?
    -- Dan (formerly known as @badbackdan)
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  8. #7
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    10k gold filled.

  9. #8
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    Re: Vintage longines chrono

    OK, it does appear to be the modified cal 12.68z that was used in the chronostop/stop-second/flyback, whatever you want to call it. Gold filled case, refinished dial. If you use that information, Google will turn up a lot of interesting things for you to read. This is a fairly uncommon and desirable watch and an interesting piece of horological history. The refinished dial makes it less interesting for serious collectors, but it's still a special watch.

    Does it run? Have you figured out how to operate it?
    -- Dan (formerly known as @badbackdan)
    ------- @oldwatchdan on Instagram -------

  10. #9
    Member Dan S's Avatar
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    Re: Vintage longines chrono

    -- Dan (formerly known as @badbackdan)
    ------- @oldwatchdan on Instagram -------

  11. #10
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    Good to know. It works beautifully blue hand counts minutes for each revolution of the red hand. But the blue hand resets to 2 position. I don’t know if that is supposed to happen.

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