Dial: white Calibre: cal. 240 HU automatic, 33 jewels Movement number: 3’209’313 Case: 18ct white gold, screw-down sapphire crystal display back Case number: 4'155'890Closure: black Patek Philippe alligator strap with Patek Philippe 18ct white gold folding clasp Dimensions: 37mm diameter Signed: case, dial and movement Accessories: Patek Philippe Extract from the Archives confirming date of sale on April 26, 2002

DIAL: in very good condition. hands in very good condition. CASE: in overall good condition with scratches and marks throughout. Scuffs mainly to the bezel especially at 3 and 9 and to the band at 9. MOVEMENT: running at time of cataloguing, world time complication working Retail price in 2006: CHF 31,500. Please note that the movement has not been tested for the accuracy of its timekeeping. Please note that Sotheby's does not guarantee the future working of the movement and that a service may be required at the buyer's discretion. **Please be advised that the bands on this watch are made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) and thus not sold with the watch, they are for display purposes only. We will remove these bands prior to international shipping.***
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. All dimensions in catalogue descriptions are approximate. Condition reports may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome. Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. Please note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and leather bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species.NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

**Please be advised that bands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping."

The reference 5110 was produced by Patek Philippe during 6 years, between 2000 and 2006. It marked the return of the world time complication in the catalogue of the manufacture since the end of production of the 2523 in 1965.
The 5110 was produced in yellow, pink and white gold as well as in platinum.  
The mechanism is similar to that which was invented by Louis Cottier. The pusher at 10 o'clock is simply activated to change the timezone, making this seemingly complicated piece particularly user-friendly.