PATEK PHILIPPE. A FINE AND VERY RARE 18K WHITE GOLD AUTOMATIC WORLD TIME WRISTWATCH WITH CLOISONNÉ ENAMEL DIAL AND ORIGINAL CERTIFICATE, DOUBLE FACTORY SEALED SIGNED PATEK PHILIPPE, GENEVE, REF. 5131G, CIRCA 2013 Cal. 240 HU automatic lever movement stamped with the PP seal, 33 jewels, polychrome cloisonné enamel dial depicting Eurasia, 24 hours revolving chapter ring divided into nocturnal and diurnal hours, outer silvered revolving ring with names of 24 cities, circular case, glazed display screw-back, push-button in the band to adjust the time zone, 18k white gold Patek Philippe buckle, case, dial and movement signed. 39.5mm. diam. Reference 5131 is a tribute to Patek Philippe’s vintage world time watches, which are today amongst the rarest treasures, especially when highlighted by a superb cloisonné enamel dial such as the present contemporary example. As the art of making such dials is highly complex and requires great skill from dedicated artisans, the numbers produced are very limited. In production only from 2008 to 2012, reference 5131 is equipped with the ultra-thin automatic calibre 240 HU. (HU stands for Heure Universelle, which is French for World Time). It features an eccentric 22k gold micro-rotor recessed in the back plate. Reference 5131 was produced in two different case materials with two different cloisonné enamel dials. The yellow gold version displays the Americas, Europe and Africa, while the white gold version, such as the present example, displays Europe, Africa, Asia and Oceania. Reference 5131 is today discontinued and no longer listed in Patek Philippe’s catalogues. The present example is still double factory sealed and therefore has never been worn, nor taken out of its original packaging. With Patek Philippe Certifcate of Origin, product literature, instruction manual, leather wallet, slip case, ftted presentation box and outer packaging. SGD 100,000. - 150,000.