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Vacheron Constantin

Wow!!! I just looked this up. Congratulations!!

 

When I saw the two frequency actuator I assumed the 12:00 sub-dial was the PR indicator, but I always roughly thought the beat frequency was directly proportional to the the power reserve; meaning if the watch beats 4X faster, the power reserve would approximately last 4x shorter, but this appears to last more way longer.

Also the Lange 31 is ginormous and this is 65 days!!? And requires a special winding key. Does this?

Thanks for sharing.

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