A. Lange & Söhne

Hello all. I've been lurking around these parts for the last 8 months or so and this is my first post. As the title reads I'm having problems with my 1815, and I am resigned to the fact that it will have to go back to Lange to be fixed. Nevertheless, I wo... 

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So this is the first time I hear this kind of trouble: a watch which has a much larger power reserve than expected... What about the accuracy of the watch? If everything is ok, somebody is winding the watch when you are not at home. Maybe a little elf...

Sounds strage the watch can keep going for that long.. It the time correct though?

in my case it was not the correct time of course. I also noticed, when handling it again after a long time, that the second hand was running. But I reckon that is only the balance wheel swinging due to handling and not a real movement that is powered by t...