Greubel Forsey

• cal. GF 02 manual winding frosted gilt movement, 39 jewels, mono-metallic balance rotating within double tourbillon, inner 1-minute tourbillon inclined 30° angle in relation to outer 4-minute tourbillion • gray matte dial, subsidiary dial for constant seconds, fan-form sector for 72-hour power reserve indication • 18k pink gold circular case, engraved band, sapphire crystal display back • case, dial and movement signed • with an 18k pink gold Greubel Forsey double deployant buckle

Movement and functions are in working order while cataloguing. Dial is clean and intact. Bezel and lugs with very light scuffs, minimal signs of use. No signs of any polishing. Overall condition is excellent. A recommended piece. **The strap of this wristwatch is made from an endangered species, please refer to important notices for further information**.
"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."

With a Greubel Forsey presentation box with outer packaging. 

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 "1st 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 is understated, with a matte grey finish, accented by pink gold Roman and baton numerals.  While the skeletonized design of the lower part 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.  Fitted in an 18k pink gold case, the watch measures an impressive 43.5 mm in diameter.  The case band is hand-engraved with a spiral motif symbolizing infinity. 

Greubel Forsey的＂30度雙體陀飛輪＂技術是兩位著名獨立製錶巨匠Robert Greubel及Stephen Forsey耗時四年傾力研發的傑作。做為Greubel Forsey的＂第一項技術發明＂，此錶以其雙陀飛輪系統的專利設計為特色，成就了鐘錶技術的一次躍進，也創造了鐘錶製造史上新的里程碑。這項複雜工藝挑戰傳統技術，令雙陀飛輪框架互相傾斜30度角，以平衡地心引力對擺輪的影響，從而達到計時的高精准度。此設計另一過人之處即是由128個精密零部件組裝的雙陀飛輪框架僅重1.17克，不得不令人嘆服其工藝之精巧。與傳統技術相較，由擺輪及鋸齒狀齒輪組成的圓錐形傳動裝置，將動力傳輸的精准度與穩定性提升到了更高的技術層面。

錶盤上半部以低調的深灰色裝飾搭配粉紅金羅馬數字時刻，而下半部則運用鏤空設計，充分展示雙體陀飛輪之優美動態。除提升計時的精准性之外，雙體陀飛輪30度角的傾斜設計也賦予了腕錶完美的深度。此錶直徑達43.5毫米，令人印象深刻。18K粉紅金錶殼與手工雕飾於錶殼邊緣處，象徵永恆的精美螺旋圖案相得益彰。