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Can anyone help identify this Caliber

  • forum 6 replies
  • last reply by MarkFleminger 28 Sep 2018
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    Mr. Todd Arnold
    Apprentice 3 posts
    26 Sep 2018, 9:02 p.m. 26 Sep 2018, 9:02 p.m.
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    Can anyone help me identify this IWC caliber? It is from a Tiffany watch with a Cressarrow case.  Thanks!/site_media/ckeditor_images/9eccf02355518c3d5781158b62b763b4.jpg

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    Mark Fleminger
    Master 3193 posts
    26 Sep 2018, 9:14 p.m. 26 Sep 2018, 9:14 p.m.
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    Looks like Cal 83 to me 

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    Mr. Cody Lennox
    Graduate 126 posts
    26 Sep 2018, 9:18 p.m. 26 Sep 2018, 9:18 p.m.
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    from what i can tell looks like a cal 83

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    Mr. Todd Arnold
    Apprentice 3 posts
    27 Sep 2018, 4:34 p.m. 27 Sep 2018, 4:34 p.m.
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    OK, I did do some research on this before posting. I guess the Cal 83 evolved a little over time. The bridge layout does look like the Cal 83. I just saw the differences in the screw placement and chaton finishing and thought there could be a different caliber. Of course, IWC could have changed the screw placement and finishing for different customers as well.

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    Cromagnonman
    Insider 395 posts
    27 Sep 2018, 4:40 p.m. 27 Sep 2018, 4:40 p.m.
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    Hi Tgarnold,
    it is a Calibre 86. made in 1923. Only 4800 pcs of this caliber where produced from 1922 to 1938. It has a diameter of 10 lignes.
    The Calibre 83 is a 12 ligne calibre in contrast.

    br
    Cromagnonman

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    Mr. Todd Arnold
    Apprentice 3 posts
    27 Sep 2018, 8:49 p.m. 27 Sep 2018, 8:49 p.m.
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    Thanks for the info. I was able to find a spec sheet for the cal 86 and indeed you are correct. The watch is in transit so I couldn't verify its size.

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    Mark Fleminger
    Master 3193 posts
    28 Sep 2018, 1:54 a.m. 28 Sep 2018, 1:54 a.m.
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    Thank You for the education on Cal 86  :o)

    CroMagnonMan has written:

    Hi Tgarnold,
    it is a Calibre 86. made in 1923. Only 4800 pcs of this caliber where produced from 1922 to 1938. It has a diameter of 10 lignes.
    The Calibre 83 is a 12 ligne calibre in contrast.

    br
    Cromagnonman

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