Greubel Forsey
Double Tourbillon Vision 30 Degree in Rose Gold
on Black Strap with Anthracite Dial - Factory Serviced in 2017
| Model #: | Double Tourbillon-Vision |
| Case Material: | Black Alligator |
| Case Size: | 43.5mm |
| Movement: | Mechanical |
| Dial: | Anthracite |
| Bracelet: | Black |
| Retail Price: | $505,000 |
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When Robert Greubel and Stephen Forsey first decided to develop a high performance tourbillon regulator, they set out to both pay homage to its famous inventor, Abraham Louis Breguet, and to make a decisive technical advancement.
In order to respond to the specific requirements of the tourbillon in a wristwatch, Greubel Forsey developed an innovative double tourbillon. One carriage, rotating in 60 seconds and inclined at 30°, rotates inside another, which is itself rotating every four minutes. Rotating a tourbillon inside another tourbillon in this manner averages out errors induced by the force of gravity on the balance. The construction allows for superior chronometric performance; a minimum volume/maximum balance diameter ratio; and enables the superbly finished mechanism to be appreciated visually.
To facilitate the best view of the mechanical ingenuity and nobility of the new mechanism, the architecture of the movement and the dial arrangement offer an immediate and global vision of this fascinating subject, the ballet of a pair of Tourbillon cages appearing to cradle the balance system.
One first perceives the larger of the two cages, which per forms a full rotation every four minutes. Its progress is indicated by four minute-markers placed at the centre of the bridge of the large Tourbillon. Serving as a poising weight, a tiny gold nameplate indicates the individual number of the watch. Meanwhile, the off-set escapement is clearly visible around the rim of the inner cage.