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    Posted 5 months ago

    RickBas
    (1 item)

    Hi, I'm looking to see if any one knows anything about this woman's digital watch. I'm told that it can me made to work again however no one seems to know anything about it.

    Mystery Solved
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    Ladies Wristwatches
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    logo
    ROLEX Precision antique cal.1400 Silver Dial Hand Winding Ladies Watch_636938
    ROLEX Precision antique cal.1400 Si...
    $698
    See all

    Comments

    1. vetraio50 vetraio50, 5 months ago
      Very Interesting ,.!!.!
    2. keramikos, 5 months ago
      Hi, RickBas. :-)

      Cool watch. Somebody else posted one here about ten years back:

      https://www.collectorsweekly.com/stories/15272-my-first-jump-hour

      Per Roland Ranfft at the National Association of Watches & Clocks forum:

      *snip*

      the movement is an AM 640, converted to digital display, like many in the 30s:

      http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&AM_640

      The shield with TR inside is the Swiss Ebauches SA trademark used around 1936.
      Hese some informations about the manufacturer A. Michel (AM):

      http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&AM_000

      *snip*

      https://mb.nawcc.org/threads/jump-hour-info-needed.86102/
    3. keramikos, 5 months ago
      Slightly different:

      *snip*

      The Full Story

      The 1930s saw many wristwatches offering alternative time displays, such as the Longines Duo Dial or the Mido Direct Time. The latter comes with a jump-hour complication previously seen on pocket watches or on the Cartier Tank à Guichet launched in 1928. While the front of the case might not necessarily exhibit the brand and model name, the Mido logo can be found engraved inside the case on several locations, as well as on the movement. This unusual timepiece offers a fascinating way to read time, and the concept continues to inspire watch designers to this day.
      The Fine Print

      Maker: Mido
      Model: Direct Time
      Reference: N/A
      Year: 1930s
      Case No: 340353
      Material: Stainless-steel case
      Dimensions: 23mm width, 30mm length; 7mm thickness
      Crystal: N/A
      Lume: N/A
      Caliber: Manual-wind Mido-signed movement with jump-hour complication
      Bracelet/Strap: Red-brown leather strap
      Lug Width: 16mm
      Box/Papers: No

      *snip*

      https://shop.hodinkee.com/products/1930s-mido-direct-time-jump-hour?variant=47988757327

      *snip*

      The Mido Jumping Hours was also called Mido Evolution or Mido Direct Time. A patent for the case and the time display system was filed in 1931. However, the watch was officially released in 1933. The original feature of this piece was its display showcasing the hours, the minutes and the seconds in three separate windows.

      How did it work?

      The disc for the units was in direct contact and triggered the disc for the tens, which made the hour disc jump when it reached 60. Note that the seconds are displayed on a continuous disc.

      *snip*

      https://www.midowatches.com/us/mido-universe-collectors/mido-jumping-hours.html

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