To salute the 40th anniversary of its acclaimed self-winding caliber 240 movement, Patek Philippe presents the Calatrava with an offset subsidiary seconds dial and analog date in a new white-gold version with a 2 mm larger diameter. The graphic look of the dial in ebony black and silvery gray is reminiscent of the legendary Ref. 5000 that was launched in 1991 and followed by the Ref. 6000 in 2005.