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IWC 8541 movement - hacking vs. no hacking

  1. Neeb Apr 25, 2022

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    I have an IWC with the 8541 movement (I posted about it here: https://omegaforums.net/threads/iwc-ref-802-case-mystery.144595/).

    It doesn't hack, which is normal for the 8541 I think. I've heard that most 8541B movements hack, while most 8541s do not. However I've also heard that this isn't cut & dry and that there are some 8541s that hack.

    If this is the case, presumably there are just a small number of parts that differ between 8541s that hack and those that don't? I have a slightly mad idea that perhaps I could try to source these parts and persuade a good watchmaker to add the hacking feature during a full service. It's a feature I find very useful. Would this be possible..?