Longines movements

Thread: Longines movements

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  1. #1
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    Longines movements

    I've dug out a couple of Longines movements, one of which looks quite interesting (if a bit agricultural) although it lacks both a stem and a case. It's 12.5 lignes (27.8mm).
    I'm having a bit of difficulty identifying it although from the serial number it's from about 1914. Anyone able to identify the precise movement?

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  2. #2
    Member Dan S's Avatar
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    Re: Longines movements

    At the risk of stating the obvious, the movement is engraved "13.82", which is presumably the caliber.
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  3. #3
    Member bubba48's Avatar
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    Re: Longines movements

    13.82


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    Re: Longines movements

    Quote Originally Posted by badbackdan View Post
    At the risk of stating the obvious, the movement is engraved "13.82", which is presumably the caliber.
    😊

  6. #5
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    Re: Longines movements

    And how is the diameter expressed in mm related to the nominal calibre? Doesn't compute?

  7. #6
    Member Dan S's Avatar
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    Re: Longines movements

    Quote Originally Posted by skridlov View Post
    And how is the diameter expressed in mm related to the nominal calibre? Doesn't compute?
    I don't know how Longines movement caliber numbers relate to their size. I would have guessed that a cal. 13.82 movement would be 13 lignes (about 29mm). But I'm not sure there is always a connection between the caliber number and the size. You should be careful in measuring it since there seems to have been some minor modification to the edge of the base plate at some point over the years (obvious from the front side at bottom right in your photo).
    -- Dan (formerly known as @badbackdan)
    ------- @oldwatchdan on Instagram -------

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