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  1. osterman Sep 14, 2023

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    Hi.
    I need to replace a data disc of a Polerouter with 215-1 movement, because it doesn't advance at day 26.
    I found on ebay such a data disc, but for 215-2 and the seller doesn't know if it is compatible with 215-1.
    Does any of you experts know if they are interchangeable?
    Thanks a lot.
     
  2. rendo Sep 14, 2023

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    I'm not an expert, but based on the following from cousinsuk, the date discs of the two movements rotate in opposite directions to begin with.

    upload_2023-9-14_12-32-2.png
     
  3. osterman Sep 15, 2023

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    Thanks a lot. That's it. I remembered there was interchangeability but it is between 215-2 and 218-2 (apart from some minor pieces).