Confused about IWC pocket watch movement
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Thread: Confused about IWC pocket watch movement

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  1. #1
    Join Date
    Oct 2013
    New York

    Confused about IWC pocket watch movement

    This movement has caliber listed under balance and it is marked C 9725.
    The problem is if this in fact Cal 97 variation it should be stem wind. But this one somehow is key wind...
    What am I missing here.

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  2. #2
    Member Badener's Avatar
    Join Date
    Aug 2015
    Eurasburg, Germany

    Re: Confused about IWC pocket watch movement

    What a beauty!

    "A rare modern re-edition of this watch also was made by IWC between 1980 and 1985. This was Ref. 5410 and the dealers' book page showing the watch is linked below.

    IWC wanted to produce a maximum of 250 of these watches. However, it appears that only 88 watches were produced and sold (numbers from 1 to 86 and also 100 and 111).

    The movement is special. Because of the "changing-mechanism" it was impossible to use a movement with standard-winding and setting via the crown. Therefore IWC modified its "normal" calibre 9720 into a key-winding and -setting movement --that is, a key had to be inserted in the movement to set it. In addition, the movements were engraved and decorated by hand. Because of these two reasons the calibre was given its own number: calibre 9725."

  3. #3
    Join Date
    Jan 2018

    Re: Confused about IWC pocket watch movement

    Wow, nice find.

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  5. #4
    Vint. Forum Co-Moderator Mirius's Avatar
    Join Date
    Mar 2011
    Surrey, UK

    Re: Confused about IWC pocket watch movement

    Interesting. Key wind and incabloc is an unusual combination so there had to be an explanation.

  6. #5
    Join Date
    Apr 2017

    Re: Confused about IWC pocket watch movement

    Sweet package. Particularly nice dial and hands. :)

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