Technical specifications - 5110:
Movement : Caliber CH 240 HU (Cal. 240/188)
Case : 18K Yellow, Rose, White Gold & Platinum
Case diameter : 37 mm
Case tip-to-tip : 46 mm
Watch height : 10 mm
Case diameter : 37 mm
Dial : 3 part rotating dial with guilloche pattern
Hands : Lozenge style - in 18K YG, RG or WG
Water resistance : 25 m under water (2.5 atmospheres)
Strap : Hand stitched alligator with matching gold or platinum bi-fold buckle.
History: (based on information by Cormac Kinney) The World Time system was invented around 1935 by Louis Cottier, a famous independent watchmaker in Geneva. This system was used by Patek Philippe and also by other major names in the Swiss watch industry, such as Agassiz, Vacheron Constantin and Rolex. Patek Philippe created various series of World Timers and the earliest known is unique rectangular galbé pink gold model - Ref. 515, made in 1937, fallowed by references 542, 1416HU, 96HU, 1415HU, 1415/1 and finally 2325HU with 2325/1 that were discontinued in 1965.
After 35 years - Patek Philippe introduced 5110 in yr. 2000. Reference 5110 was discontinued in 2005/2006 as Patek introduced reference 5130 at Basel in 2006. Reference 5130 has the same caliber (240/188) as reference 5110, but the diameter of 5130 grew from 37 mm to 39.50mm and also varies in the finish of the dial and different hands.
Case: Two-body case solid, polished, screwed-down transparent case back, protected crown, push button on the case at 10 to activate the set table discs with the different time zones, the 24-hours and jump-type time setting, concave lugs, sapphire crystals front & back.
Dial: "Guilloche" Opaline white with applied gold indexes, surrounded by a black and matte silver revolving disc in 24-hours for the diurnal and nocturnal hours, outer revolving ring dial bearing the names of 24 cities in the world. Yellow or white gold "lozenge" hands.
Movement: Cal. 240/188, stamped with the Seal of Geneva Quality Mark, rhodium-plated, "fausses côtes" decoration, 33 jewels, straight line lever escapement, Glucydur Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self-compensating free-sprung flat balance spring, 22K gold microrotor.
Caliber: CH 240 HU
Diameter : 27.5 mm
Height : 3.88 mm
Number of parts : 235
Power reserve : 48 hours
Beats per Hour: 21,600
Beats per Second: 6 (3kz)
Winding rotor : Mini rotor in 22K gold, unidirectional winding
Balance spring : Flat
Balance : Gyromax
Introduced in: March 2000
Special Features: Single pusher at 10' clock for setting of time zone
5110 Patek Philippe Official Press release and more information - click here
5130 Patek Philippe Official Press release and more information - click here
Patek Philippe caliber 240 review - click here
History of the Patek Philippe World Time by Cormac Kinney - click here
A small history of the Patek Philippe World Time by CYR on TZ - click here
5110 Review by W. Massena - TimeZone / PP forum moderator - click here
Interesting counter-points to the above review by Frank Jourdan - click here
5110 World Time review by Cormac Kinney and ThePuristS.com - click here
To learn - what GENEVA SEAL on the movement means - click here
Patek Philippe Company History - click here
US MSRP: (5110 was discontinued in 2007 and replaced by 5130)
5110 YG US MSRP: 2007 $27,700
5110 RG US MSRP: 2007 $29,200
5110 WG US MSRP: 2007 $29,200
5110 Plt. US MSRP: 2007 $40,000
5130 R/G US MSRP: 2007 $31,500
5130 W/G US MSRP: 2/2008 $33,600
5130 W/G US MSRP: 5/2008 $38,800
5131J enamel US MSRP: 5/2008 $53,700