I read your piece on the Polaris XL Chronographs. I learnt a lot, many thanks for publishing the results of your valuable investigations. I would like to point out that the dial of 5894.40.00 can be found on 5890.40.00. They were originally produced like that, it is not the result of a dial change. The evidence for this is a 5890.40.00 that I directly purchased from its owner who never had it serviced, let alone had the dial changed! There are also promotional pictures from the 1990's showing this dial swap. Perhaps the reason is that some 5894.40.00 were fitted with gold and titanium bracelets ?
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