Girard-Perregaux Tourbillon with Three Gold Bridges

Jan 18, 2010,05:52 AM
 



Tourbillon with three gold Bridges




 


The Girard-Perregaux icon is enclosed in a round case, increased to a diameter of 41 millimetres, and exudes an elegance which is at once timeless and highly contemporary. The historic architecture of the Tourbillon with three gold Bridges has been augmented for a very limited edition of only 50 pieces.

 

This new showpiece in Girard-Perregaux's Haute Horlogerie collection is the embodiment of a unique heritage whose origins date back to the middle of the 19th century. At this time, the La Chaux-de-Fonds watchmaker Constant Girard-Perregaux was conducting research in the field of the Tourbillon escapement. In 1860, he created a timepiece which was awarded a first-class prize by the Neuchatel Observatory: its Tourbillon movement featured three parallel bridges, under which the barrel, centre wheel and Tourbillon were aligned. The watchmaker continued his quest, applying for a patent from the United States Patent Office in 1884 to protect the design of the movement with three parallel arrow-shaped bridges. In so doing, he established a completely new concept: the movement was no longer simply a technical and functional component; it was also a design element in its own right. In 1889, it received the ultimate accolade: the Tourbillon with three Gold Bridges was awarded a gold medal at the Paris Universal Exhibition.




A century later, in the late 1970s, Girard-Perregaux decided to resume production of this icon of Swiss Haute Horlogerie. It was a brave endeavour, which preceded the renewed success of mechanical complication watches. The first in a series of twenty pocket watches was created in 1981, the result of some 1500 hours of work. Since then, the Manufacture's workshops have produced a few rare wristwatches each year offering a modern take on the design.

 

The new 2010 version of the Tourbillon with three gold Bridges adopts a rare shape for the bridges themselves: the same as those on the watch awarded the prize by the Neuchatel Observatory in 1860. They have been reinterpreted in an openworked version which imbues the watch with a highly contemporary purity. Their stunning perfection is the result of painstaking preparation: the bridges are first of all hollowed out and carefully polished by hand. It takes seven whole days of work to obtain an impeccable finish.




 

The delicate Tourbillon also demands extreme attention to detail: an incredible dexterity is required to assemble its 72 components, all of which fit into a diameter of just one centimetre. It weighs 0.3 grammes - about the same as a swan's feather. Accompanying it is a self-winding system patented by the Manufacture: a small-diameter platinum oscillating weight is fitted in the space below and around the barrel. This leaves the movement's dimensions and architecture intact.






 

The gold case, whose proportions and curves are designed for a perfect fit on the wrist, adds a new dimension to the prestigious collection of Tourbillons with three gold Bridges, further developing the model's enduring history.


 

Technical specifications

 

Pink gold case

Diameter: 41 mm

Antireflective sapphire crystal

Case-back fastened with 6 screws

Water resistance: 30 metres

 

Girard-Perregaux movement GP9600C Mechanical with automatic winding

Calibre: 32 mm

Frequency: 21,600 vibrations/hour (3 Hz)

Jewels: 30

Power reserve: minimum 48 hours

Functions: Tourbillon, hour, minute, small second on the Tourbillon

 

Alligator strap with folding buckle

 

Limited and numbered edition of 50 pieces



Movement


 

Movement dimensions

Diameter: 32 mm

Height: 6.25 mm

 

Number of components

Complete movement: 262 components

Tourbillon cage: 72 components, 0.3 g

 

Jewelling

30 jewels

 

Power reserve

Minimum 48 hours

 

Barrel

Guilloché and hand-engraved cover, two-tone electroplating treatment

 

Automatic winding

Micro-rotor mounted on barrel staff crafted in platinum, patented by Girard-Perregaux

 

Balance wheel

Free-sprung with gold adjustment screws (diameter 8.35 mm), lift angle 52°

 

Frequency

21,600 vibrations/hour (3 Hz)

 

Balance spring

Philips terminal curve

 

Main plate

Rhodium-plated, hand-applied azure finish with stippled look, polished corners, circular-grained and bevelled recesses

 

Bridges

Three gold Bridges, arrow shaped, bevelled and hand-polished (inspection under 10x magnifier)

 

Two gold marking plates, polished corners, satin-finished rim, two-tone electroplating treatment

 

Gear Trains

 

Tourbillon

 

Involute of a circle profile

 

One rotation per minute

Upper and lower cages bevelled and polished

Cage balanced with gold adjustment screws

Escapement bridges and pallet bridge bevelled and polished

 

Screws

Bevelled and black-polished

 

Steel parts

Drawn and bevelled

 

Display

Hour and minute

Smalls seconds on the Tourbillon

 

 

Exterior

 

Case materials and finishes

Pink gold with domed sapphire crystal

Case-back fastened with 6 screws

Hand-engraved individual number

 

Case dimensions

Diameter: 41 mm

Height: 11 mm

 

Water resistance

30 metres

 

Crown

Gold, with engraved Girard-Perregaux logo

 

Hands

Hour and minute, in gold

Small seconds in blued steel on the Tourbillon cage

 

Strap

Black hand-stitched alligator strap, with gold deployant buckle with Girard-Perregaux engraving

 

 

 

 




This message has been edited by AnthonyTsai on 2010-01-18 15:02:20


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Comments: view entire thread

 

Kong, this is a great idea for a PuristsPro special edition

 
 By: lien : January 18th, 2010-12:47
I like the etching like engraving on the broad bridge, not intrusive and to the points Perhaps even a ti broad bridges in ti laureato for a rugged cool steel look!? Cheers, Ed~...