Manufacturer: Greubel Forsey Year: Circa 2008 Movement No: 0850 Case No: 00'829 Model Name: Double Tourbillon 30° Secret Material: 18k white gold Calibre: Mechanical, GF02J, 39 jewels Bracelet/Strap: Black Greubel Forsey crocodile leather strap Clasp/Buckle: 18k white gold Greubel Forsey double folding deployant clasp Dimensions: 43.5 mm. diameter Signed:Case, dial and movement signed Accessories: With Greubel Forsey duplicate of International Guarantee, Extract du Grand Livre dated 12 December 2008, loupe, instruction manual, polishing cloth, gloves, leather wallet, fitted presentation box and outer packaging.
Catalogue Essay
The Greubel Forsey Double Tourbillon 30° was introduced to the market in 2004 after four years of research and development. This revolutionized the tourbillon system and the double tourbillon is essentially two tourbillons composed within each other. The exterior tourbillon is inclined at 30° and rotates in 60 seconds and the inner tourbillon carriage rotates every four minutes. This ground-breaking invention permanently compensates the rate of gravity-induced errors in the escapement and oscillator system.
Offered in like new condition, the present watch is known as 'The Secret' as the double tourbillon 30° is hidden behind the dial. This mysterious and discrete design was first introduced by Greubel Forsey in 2008 and is further enhanced with a power reserve feature.
With the introduction of the Double Tourbillon 30 at Basel World in 2004, Robert Greubel and Stephen Forsey became major players in the world of haute horology and independent watchmaking. Their firm concentrates on high-end complicated movements with precision timekeeping and the highest quality hand finishing. They achieve this with movements featuring multiple tourbillons and inclined balance wheels — tourbillons designed for wristwatches. Forsey joined Greubel's team at Renaud & Papi SA, a high-complication specialist now part of Audemars Piguet. The team participated with Harry Winston and their Opus 6 project. In the span of 12 years, the firm has become highly sought-after by collectors for their innovative timekeeping and industrial design.