Patek Philippe. An extremely fine, rare and large 18K pink gold dual time zone wristwatch with additional independently adjustable jumping hour hand, original certificate and box

SIGNED PATEK PHILIPPE, GENÈVE, CALATRAVA MODEL, REF. 2597, MOVEMENT NO. 739'731, CASE NO. 309'789, MANUFACTURED IN 1963

Details
Patek Philippe. An extremely fine, rare and large 18K pink gold dual time zone wristwatch with additional independently adjustable jumping hour hand, original certificate and box
Signed Patek Philippe, Genève, Calatrava model, ref. 2597, movement no. 739'731, case no. 309'789, manufactured in 1963
Cal. 27 HS 400 nickel-finished lever movement stamped twice with the Geneva seal, 18 jewels, Gyromax balance, silvered matte dial, black painted and applied gold baton numerals, subsidiary seconds, circular case, two buttons in the band to advance or set back the independently adjustable blued steel jumping hour hand to display another time zone, snap on back, 18K pink gold Patek Philippe buckle, case, dial and movement signed
35 mm. diam.

Brought to you by

Dr. Nathalie Monbaron
Dr. Nathalie Monbaron

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Lot Essay

With Patek Philippe Certificate of Identity and Guarantee of Origin and contemporary orange presentation box. Furthermore delivered with the Extract from the Archives confirming production of the present watch in 1963 and its subsequent sale on 27 September 1978.

This watch is one of only four examples of the celebrated reference 2597 in pink gold with two hour hands to appear in public to date. Originally purchased in 1978, some fifteen years after its making, it has survived in absolutely spectacular, original overall condition, showing no signs of wear whatsoever. The only appropriate way of describing its condition is either by using the word "mint" or "perfect".

The numerous elements united in this watch - including its sheer rarity, ingenious mechanism, perfect condition, the presence of the original certificate and distinguished provenance - raise this rose gold travel time to the peak of the world of vintage collectors wristwatches.

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, such as the present watch, features an independently adjustable hour hand whereas the second 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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