In auction a pre-owner 5110G World Time with full set: the ultimate connoisseur’s Patek Philippe reference, a classic complication from a house known for excellence in complications. The World time watches combine a counter-clockwise 24-hour ring with a rotating chapter ring of reference cities: each city represents one of the 24 principal time zones. This system, which was invented by watchmaker Louis Cottier in the 1930s, enables a unique trick; one dial permits instant reference to the time in any of the globe’s regions. Unlike dual-time and GMT watches, the world time watch features all the times. Cottier’s innovation was the addition of a 24-hour ring that rotates counter-clockwise. The 24 hours of the ring are concentric to the 24 reference cities. Simply align one’s current city with the index at 12 o’clock, set the local time and Patek Philippe does the rest. Brand: Patek Philippe Model: World Time Reference: 5110G Case Material: White Gold Movement: Automatic Dimension: 37 mm Dial: Silver Bezel: White Gold Crystal: Sapphire Bracelet Type: Strap Bracelet Material: Leather Original Box: Yes Original Papers: Yes Year: 2003 Condition: Excellent #GrandComplication