but it was not a fruitful explanation given by Patek in their 2009/2010 catalogue as the sketch is too rudimental in explanation.
A shame.
However Jim's observation is the valuable aspect here and the logical connection that I have done is only a result of his observation.
The use of a small months wheel and a satellite wheel instead of a big 48 months wheel is information that was available in a review of the 5159.
Best
Moritz
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