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Patek Philippe. A very fine, rare and large 18K gold dual time zone wristwatch with Breguet numerals


Patek Philippe. A very fine, rare and large 18K gold dual time zone wristwatch with Breguet numerals
Signed Patek Philippe, Genève, Calatrava model, ref. 2597, movement no. 727'310, case no. 309'758, manufactured in 1959
Cal. 12-400 HS nickel-finished lever movement stamped twice with the Geneva seal, 18 jewels, silvered matte dial, applied gold baton numerals, subsidiary seconds, circular case, two buttons in the band to advance or set back the independently adjustable jumping hour hand to display another time zone, snap on back, 18K gold Patek Philippe buckle, case, dial and movement signed
35 mm. diam.
Special notice
Prospective purchasers are advised that several countries prohibit the importation of property containing materials from endangered species, including but not limited to coral, ivory and tortoiseshell. Accordingly, prospective purchasers should familiarize themselves with relevant customs regulations prior to bidding if they intend to import this lot into another country.

Brought to you by

Dr. Nathalie Monbaron
Dr. Nathalie Monbaron

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Lot Essay

With Patek Philippe Extract from the Archives confirming production of the present watch in 1959 and its subsequent sale on 30 March 1960.

The reference 2597 offered here for sale is one of the most attractive examples of this celebrated model to appear in public in recent years. Fitted with the much sought after Breguet numerals, it furthermore impresses by its excellent, original overall condition, showing oxidation traces to the case, a typical sign for watches which have not been used in a very long time. The case is full and retains its original case proportions to the best extent, reflected by the sharp edges to lugs and the crisp gold mark. The dial has never been restored or cosmetically enhanced in any way. The hard enamel signature is, consequently, as raised as the connoisseur would expect.

Reference 2597
Reference 2597 with calibre 12'''400 HS for heures sautantes or jumping hours was launched in 1958. This highly ingenious system was patented by Patek Philippe in 1959, Swiss Patent 340191 for a "Time Zone Watch". The model was made in two versions, the first features an independently adjustable hour hand whereas the second, such as the present watch, includes an additional hour hand.

With the arrival of transatlantic flights with jet aircrafts in the 1950s, the need for a watch showing both local and home time increased. Various attempts were made but none could compete with Louis Cottier's elegant solution developed for Patek Philippe. The main problem was the setting of the hours independently of the minutes, allowing travellers the easy and quick adjustment the hour indication to their local time zone without losing the correct time in minutes.

Cottier's design enabled the moving of the cannon pinion and consequently the hour hand in 12 steps around a 12-pointed star-wheel driven by the motion work. By pushing the two correction buttons in the band, the position of the hand can be changed in either direction by exactly one hour while maintaining its correct relationship to the minute hand.

This patented wheel train is today the basis of Patek Philippe's new Travel Time watch, Ref. 5034, launched in 1997.

Examples of both versions of reference 2597 are illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, pp. 238 & 239.

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