Patek Philippe

18k, damascened nickel lever movement stamped with the seal of Geneva, 33 jewels, free-sprung gyromax balance, 22k gold mini rotor, silvered engine turned dial, applied baton numerals, rotating ring calibrated for 24-hours and divided into diurnal and nocturnal hours with sun and moon symbols, outer rotating ring calibrated for 24 world locations for international time indication, polished circular case, crown with protective shoulders, screw-down sapphire crystal display back, case, dial and movement signed, with an 18k gold Patek folding buckle.  

Production of reference 5110 began in 2000 and officially ended in March 2006. 

The 5110 World Time wristwatch effortlessly combines form and function to produce a wristwatch upon which the time in 24 world locations can easily be viewed. The complex patented world-time mechanism allows the single push button to simultaneously control the adjustment of the 24 hour and city rings and the current local time. Inspired by Patek Philippe vintage world time wristwatches, such as the legendary reference 2523, the design of the 5110 combines 21st century technology with classic styling.