Apologies in advance if topic is in the wrong area or has not been filled out correctly. I purchased a Lange Zeitwerk (not striking time) from a reputable second hand watch dealer (Melbourne Australia) about 2 weeks ago. The watch had been purchased brand new by the previous owner in December 2015 in Rome Italy. The watch is gaining about 10 seconds per day and is therefore just over 2 minutes ahead of actual time over the two week period. Some websites have suggested that their Zeitwerk runs between 1.5 and 3.0 seconds per day inaccuracy, but there does not seem to be a firm view on what would be an unacceptable deviation. So my question is this - should I be concerned or is this normal? What would you do?
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