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Patek Philippe

Watchme, the Regulator does not use the cal. 240 + an Annual Calendar module. Actually, PP has developed the brand new cal. 31-260 for the 5235.

 

33 mm in Diameter instead of 27,5 at the cal. 240. Cal. 31-260 came from the Advanced Research Dept. of PP using several parts made of Silinvar. This caliber is used for the Regulator only at this time.
This very special movement makes the 5235 even more intriguing imho.

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