SIHH 2011: Vacheron Constantin Patrimony Traditionnelle World Time
One of Vacheron Constantin's most popular novelties at SIHH 2011, was the Patrimony Traditionnelle World Time. Their new world time watch features a specially designed complication that allows it to simultaneously display 37 different time zones (as opposed to 24). It also has an innovative day/night indicator that uses a map with a special translucent rotating disk overtop, with shading on half of the disk, therefore indicating in which part of the world it's day and night, at a glance.
To create a mechanical timepiece capable of displaying 37 different time zones, Vacehron Constantin had to design a special cam and sensor that adjust for the difference between time zones, which was especially difficult because of the time zones that vary by either a half or quarter-hour. According to the creative director at Vacheron Constantin, Christian Selmoni, this is the first mechanical watch to display all 37 timezones. The timepiece is so innovative, relatively speaking, that if a new time zone is ever added, a Vacheron Constantin watchmaker can make an adjustment so the watch will reflect these changes.
Adjusting the hours, minutes and seconds, as well as the World Time, is all handled via the crown. The single crown design simplifies the operation of this complicated timepiece (many word timers require two crowns), therefore adding to its elegance.
To indicate the day/night around the world, Vacheron Constantin created a world map in the center of the dial. Sitting over the top of the world map is a rotating translucent sapphire disk that features a partially shaded area to differentiate day/night. As you change the World Time, via the crown, the disk rotates over the world map, half is always shaded (indicating night) and the other half is clear (indicating day). This allows you to easily determine if it is day or night, anywhere in the world.
The 18k pink gold case is 42.5 mm in diameter, and is fully polished. The back features a sapphire crystal, allowing a clear view of the new in-house calibre 2460WT. The self-winding movement runs at 28,800 vph (4 Hz) with a 40-hourpower reserve. Water-resistance is 30 meters. It comes with a brown alligator with an 18k pink gold folding clasp.
World Time watches have long been a valuable tool to international travelers who travel frequently through numerous time zones. With the addition of the extra half-hour and quarter-hour time zones, and the highly innovative day/night indicator, wealthy travelers will now have the option to wear an even more precise World Time watch while traveling. And they can rest assured, that the time will be correct, even when traveling to cities like Caracas, Venezuela (half-hour zone), or the Chatham Islands, New Zealand (quarter-hour zone).
Vacheron Constantin Press Release
"A longstanding part of the Vacheron Constantin watchmaking heritage, the World Time complication is making a noteworthy comeback to the collections from the Manufacture. The Patrimony Traditionnelle World Time model houses the new Calibre 2460WT bearing the prestigious Hallmark of Geneva. Developed and manufactured by Vacheron Constantin, this new mechanical self-winding movement is distinguished by its capacity to indicate the world's 37 time zones, including those offset from Universal Coordinated Time (UCT) by a half - or quarter-hour - an exclusive mechanism patented by Vacheron Constantin.
The new Patrimony Traditonnelle World Time by Vacheron Constantin marks the return to the collection of a complication inextricably bound to the history of the Geneva-based manufacturer. The latter is also interwoven with the theme of travel, since Jean-Marc Vacheron and his successors have constantly circled the globe delivering their exceptional timepieces. A pioneer in the development and production of innovative watches, the Manufacture Vacheron Constantin has displayed the same approach in being resolutely open to the world at large. Created in 1755 in Geneva and able to look back over more than 255 years of uninterrupted activity, Vacheron Constantin soon began exploring the four corners of the earth. It established a presence in the United States in 1832 and in China in 1845 - well before the International Meridian Conference held in Washington in 1884 which divided the world into 24 time zones, taking the Greenwich meridian as the longitude 0 point of reference. This new approach became indispensable in keeping step with the development of international travel and of railways.
The rich history of World Time at Vacheron Constantin
In keeping with the same pioneering spirit, and driven by a wish to demonstrate that the multiple time-zone watch could be further perfected, Vacheron Constantin introduced its first timepieces endowed with an international time mechanism in 1932. This movement was the work of a brilliant Geneva watchmaker, Louis Cottier, who had imagined and developed a mechanical movement indicating the 24 time zones from 1 to 24 by means of a disc rotating around the central dial and the outer bezel bearing the names of the world's major cities. This first Vacheron Constantin World Time "Cottier system" watch (reference 3372) enabled simultaneous read-off of the time in 31 cities around the world. It marked the start of a rich and longstanding relationship between Vacheron Constantin and the World Time complication. In 1936, Vacheron Constantin presented two new versions of its World Time model with a 31-city dial (reference 3650) and a 30-city dial (reference 3638) without Cairo. In 1937 and 1938, the Geneva-based Manufacture unveiled six table clocks with a mobile dial featuring 67 locations, including summer and winter time in Paris. From the 1940s onwards, Vacheron Constantin attributed the reference number 4414 to a world time model with a 41-city dial and a day/night division of the mobile 24-hour disc. During the 1940s and 1950s, many famous customers were captivated by this useful and ingenious mechanism, and contributed to spreading the fame of this new complication.
In 1957, Vacheron Constantin wrote a new chapter in its history of World Time watches by introducing the first World Time wristwatch, reference 6213, ordered by an Egyptian dignitary. It was the first of a long line of models incorporating this remarkable complication and that earned it an outstanding reputation among connoisseurs and collectors.
A patented new World Time calibre
Eager to make a major new contribution to the history of this complication, the Vacheron Constantin master-watchmakers and engineers have sought to create a mechanical movement capable of indicating not only the full time zones, but also the partial ones, so as to reflect the exact temporal reality in the 37 time zones. A number of countries have indeed adopted a half-hour or quarter-hour difference from UTC, and the Calibre 2460WT by Vacheron Constantin takes account of these specific characteristics. By way of example, it provides the correct time indication for Caracas, since Venezuela decided in 2007 to switch from a full time zone to a half time zone (GMT - 4:30).
The indication of the 37 time zones as proposed by Vacheron Constantin in its Patrimony Traditionnelle World Time is as complete as one could wish for. The display consists of three dials: a sapphire dial with a unique day/night shading; a metal dial with a "Lambert projector" type map; and a metal chapter ring. Beating at a frequency of 4 Hz (28,800 vibrations per hour) and endowed with a 40-hour power reserve, mechanical self-winding Calibre 2460WT drives displays of the hours, minutes, central seconds and World Time. It enables simultaneous read-off of the time in all regions of the world, along with the day/night indication provided by the central world map. All indications are adjusted via the crown, thus considerably simplifying the use of this highly technical watch. In light of these exclusive developments, a patent has been filed for the new Vacheron Constantin Calibre 2460WT bearing the prestigious Hallmark of Geneva.
Appreciable user friendliness
Despite its complex construction principles, the new mechanical World Time movement is extremely user-friendly. The wearer chooses the reference time and places it opposite the black triangle at 6 o'clock. The time in the reference location can then be read off either by the hour hand, or by the 24-hour disc, while the time in the other 36 time zones is simultaneously readable. The cities shown in black represent the full time zones, while the cities in red indicate half-hour or quarter-hour zones.
Incorporating all the signature characteristics of the collection - a slender bezel, a knurled motif on the case-back, a screw-down sapphire crystal case-back, and dauphine hands - the new Patrimony Traditionnelle World Time comes with a 42.5 mm diameter 18K pink gold case that is water-resistant to 30 metres. It is fitted with a brown alligator leather strap secured by an 18K pink gold folding clasp.
Due to the modern nature of this useful complication, along with the major innovations provided by its Calibre 2460WT, the Patrimony Traditionnelle World Time is destined to become an iconic model within the collection, and to perpetuate Vacheron Constantin's pioneering role in the development of multiple time-zone watches."
Source: Vacheron Constantin