With Patek Philippe Extract from the Archives confirming production of the present watch in 1962 and its subsequent sale on 16 May 1963.
Since its first appearance at public auction in 1991, the present watch has remained in the same private collection. Obviously seldom used if at all, it is preserved in excellent, original overall condition, showing hardly any surface wear. The case is full and retains its original case proportions to the best extent, reflected by the incredibly 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.
In close to new condition, the present reference 2597 is doubtlessly one of the most attractive examples of this celebrated reference to appear in public in recent years.
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.