BaselWorld 2017

In 2017, the house of Patek Philippe celebrates two important anniversaries. Its Aquanaut collection is celebrating its 20th birthday with an anniversary model, while the ultra-thin self-winding caliber 240 movement celebrates its 40th anniversary. To mark this special occasion, the manufacture Patek Philippe is presenting several new models that showcase the movement’s versatility. The most interesting of all is the new Calatrava "Squelette" Ref. 5180/1R in 18K rose gold 5N, in which the iconic self-winding caliber 240 was dramatically skeletonized and engraved by hand with volutes and arabesques.
The new Calatrava "Squelette" Ref. 5180/1R in 18K rose gold 5N exemplifies the complex beauty of the extremely rare craft of extreme sleketonization. Inspired by the notion of exceptionally transparent elegance, the new Calatrava Squelette reveals openworked plates and bridges, reduced to their mere essentials to create an outstanding visual effect, but without compromising the functional integrity of the mechanism.
The plate is open-worked even above the barrel, revealing the spiral mainspring underneath the cut outline of the Calatrava cross, Patek Philippe’s longstanding trademark. It takes more than a week to hollow out the movement, before the engraver refines its surfaces with hand-made arabesques and volutes. The "Patek Philippe Genève" brand signature is engraved on the remaining parts of the barrel frame around the Calatrava cross, while the PP logo of the Patek Philippe seal appears in engraving on the 22K gold mini-rotor.
In the final step, the movement is plated with rose gold and then finely polished and set in a movement holder ring in 18K rose gold 5N. The ring is also skeletonized down to 12 spokes that serve as hour markers.
The caliber 240 SQU, self-winding mechanical movement, is assembled from 159 parts and 27 jewels. It beats at a frequency of 21,600 semi-oscillations per hour, and provides a minimum of 48 hours of power reserve. The movement boasts a tolerance of -3 to +2 seconds per day, thanks to the Spiromax® balance spring made of high-tech Silinvar®.
The new Calatrava "Squelette" Ref. 5180/1R is presented in a round rose-gold Calatrava case of 39 mm in diameter. With its large-format sapphire crystal glass and caseback, the watch is water resistant to 30 meters of depth. It comes with a supple bracelet in 18k rose gold 5N.
All photos in this article are courtesy of Patek Philippe & Co.
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