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Most complicated watch ever created to be unveiled soon

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Vacheron Constantin will celebrate its 260 years of uninterrupted history on September 17th 2015. To mark this unique event, the Maison will unveil a unique pocket watch, created by the Atelier Cabinotiers special orders team on request of a high demanding collector, announced as the most complicated watch ever created.

Full information about this grande complication pocket watch will be progressively unveiled over the coming months till full disclosure on the day of the 260th anniversary (what an achievement!) of the brand.

As of today, here are the key information that have been disclosed.

Developed and crafted by three in-house watchmakers entirely dedicated to this project for eight years, the watch is currently identified under the name or "Grand Oeuvre" or "Opus Magnum" and someone also started to use the unofficial nickname "Tivoli", which might be another clue.

Opus Magnum will feature a broad array of horological complications including a number of absolute firsts. Other traditional complications will take advantage of technological advancements for which several patents were filed.

The timepiece will have two dials, one of them providing the owner with a seasonal astronomical indication, including the display of perpetual months, Zodiac periods, seasons as well as solstices and equinoxes.

The perpetual calendar will simultaneously display two separate yet mechanically integrated representations: the traditional Gregorian perpetual calendar with 12 months and the business calendar system known as ISO 8601 which is mainly used in the international financial sector and divides the year into weeks.

A Westminster Carillon will combine minute repetition, Petite Sonnerie and Grande Sonnerie. The picture below shows available settings: Silence (SIL), Night and Chime (CHI) on the top sector, Petite Sonnerie (PS) and Grande Sonnerie (GS) on the bottom one.

While the minute repetition strikes the time on request, Grande and Petite Sonnerie strike the quarter-hours with the difference that the Grande Sonnerie strikes both the hours and the quarter-hours at every passing quarter-hour while the Petite Sonnerie strikes the hours at the hour only and thereafter it chimes a quarter-strike only on the quarter-hours.

The Night Time Silence feature was expressly developed for this watch. The system automatically engages so that it will not chime in a given interval. The hours of night silence are bespoke set in-house at Vacheron Constantin before delivery based on the requirements expressed by the lucky collector that will own this timepiece.

A sky chart will represent the constellation as it appears from the home city of the owner and will offer the possibility to read the sidereal time, a time-keeping system based on the Earth's rate of rotation measured relative to the fixed stars rather than the Sun.

The last two pictures show an amazing three dimensional tourbillon and a technical drawing of the movement.

September is not that far away but we will keep you posted as more information become available in the meanwhile.

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