A replica Patek Philippe World Time copies the look of references 5230 and 5231. The genuine watch shows 24 time zones on one dial. A city ring lists 24 place names. A 24-hour ring shows day and night. A pusher at 10 o'clock moves the rings one zone per press. Replica prices run from about $150 to $1,500. No replica uses a real Patek Philippe caliber 240 HU.
The genuine watch
Patek Philippe sold its first world time wristwatch in 1939 as reference 1415. Louis Cottier, a Geneva watchmaker, built the mechanism and held the patent. Reference 5230 replaced reference 5130 in the mid-2010s. The case measures 38.5 mm across and about 10 mm thick. Caliber 240 HU has a micro-rotor, runs at 21,600 vibrations per hour, and holds a 48-hour power reserve. Reference 5231 uses the same movement with a cloisonne enamel map dial. Production of 5231 is small and auction results sit in the high five figures.
How the world time function works
The dial carries two rotating rings. The outer ring holds 24 city names, one per hour of offset from the reference city. The inner 24-hour ring turns with it. Colors on the 24-hour ring split day from night: light from 06 to 18, dark from 18 to 06. Pressing the pusher at 10 o'clock advances both rings by one hour. The central hour and minute hands do not move during that step. The design lets a traveler read local time in 24 cities at one glance.
Movements found in replicas
Most replicas use a Miyota 9015 or a Chinese automatic with an added module. A small number of high-end builds use a decorated movement shaped like caliber 240. Two checks separate working builds from cosmetic ones. First, the city ring and the 24-hour ring must move together. Second, each press of the pusher must advance one zone with no skip. Cheap builds print the city names on a fixed ring and fit a pusher that does nothing.
Details to inspect
- Case size. The genuine 5230 is 38.5 mm wide. Many replicas are 40 mm or larger.
- Dial texture. The 5230 center has a hand-cut basketweave guilloche. Replicas use stamped or printed patterns with shallow relief.
- City printing. Replica city rings show thicker type and uneven spacing between names.
- Pusher feel. The genuine pusher has a firm click at the end of travel.
- Weight. White gold and platinum models feel heavier than plated brass or steel cases.
- Caseback. Check engraving depth and the reference number format.
Price bands
Entry builds sell for $150 to $400. Mid range builds sell for $400 to $800 and add a working world time module. High-end builds sell for $800 to $1,500. Above $1,500, sellers use terms such as 1:1 and Swiss made with no proof of origin. The genuine 5230 in white gold lists above $60,000. The metal value alone exceeds the price of any replica.
What a replica cannot match
Movement finishing, the Geneva Seal, and the enamel work on the 5231 dial. Resale value is zero. Most watchmakers decline service on replicas because parts are not available.
Shipping and legal notes
US Customs and Border Protection can seize shipments of counterfeit goods. Import of items that carry a protected trademark is restricted under 19 U.S.C. 1526. Buyers in the US take that risk on every order.