A fine and rare 18k white gold self-winding annual calendar wristwatch with regulator-style dial.
Ref.5235 was released at Baselworld fair in 2012. The uniqueness of this watch lies in its movement which is constructed with calibre 31-260 REG QA, the last letters standing for Régulateur Quantième Annuel. This is the first ever modern Patek Philippe annual calendar wristwatch produced with a regulator style dial.
The regulator dial allows for more accuracy than a normal watch because it has a non-coaxial hour and minute hands, which means, that the hour and minute hands do not share the central pinion position on the dial but are independently place. This reference is considered among collectors to be one of the most significant technical innovations in Patek Philippe's history.
With box and paper (box will be delivered later).