Greubel Forsey

• cal. GF 02 manual winding frosted gilt movement, 39 jewels, mono-metallic compensation balance rotating within a double tourbillon, inner 1-minute tourbillon inclined 30° angle in relation to outer 4-minute tourbillion • mother-of-pearl dial, subsidiary dial for constant seconds, fan-form sector for 72-hour power reserve indication • sapphire crystal display case back secured by six screws • case, dial and movement signed • platinum Greubel Forsey folding clasp • certificate in leather folder, loop, leather pouch, presentation case

The manually winding tourbillon movement is running at the time of cataloguing, however it may benefit from a service in the near future. Dial is in good condition. The case is also in good with only slight signs of wear. This is a rare opportunity to obtain such a rare collectable piece.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. All dimensions in catalogue descriptions are approximate. Condition reports may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome. Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. Please note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and leather bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species.NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

**Please be advised that bands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping.

Important Notice regarding importation into the United States of Rolex watches
Sotheby's cannot arrange for the delivery of Rolex watches to the United States because U.S. laws restricts the import of Rolex watches. The buyer or a designated agent may collect the property in the country of sale."

The Greubel Forsey "Double Tourbillon 30º Vision" is the result of four years of combined effort of renowned independent watchmakers Robert Greubel and Stephen Forsey.  Heralded as Greubel Forsey's "First fundamental invention" the "Double Tourbillon 30º Vision" features the patented double tourbillon system, a decisive technical advance and milestone in watch making.  This complication defies gravity and tradition by incorporating two cages separated by a 30-degree angle to optimize performance and oscillation of the balance wheel.  A mark of its sophistication is that the two cages, comprising 128 elements, altogether weigh a mere 1.17 grams.  A conical gearing composed of a wheel and a pinion with profiled teeth, enables improved power transmission arguably superior to that of classical solutions. 

The upper part of the dial made of mother-of-pearl is well complemented by the skeletonised design of the lower part, which reveals the technical marvel of the double tourbillon.  Apart from enhancing the watch's chronometric performance, the choice of 30 degrees for the angle between the two turning carriages ensures a perfectly acceptable depth to the watch. The case band is hand-engraved with a spiral motif symbolizing infinity.