• 手動上弦磨砂機芯GF03，63顆寶石，雙發條盒，藍鋼單一金屬擺輪在雙陀飛輪框架內旋轉，兩個內陀飛輪傾斜30度、每60秒旋轉一次，兩個外陀飛輪每4分鐘旋轉一次 • 黑色錶盤，小錶盤顯示秒數連動力儲存，兩個視窗透視雙陀飛輪 • 錶殼、錶盤及機芯印有品牌標誌 • 備Greubel Forsey 18k粉紅金摺疊式錶扣
* 拍品資料以英文圖錄為準。

CASE Case in overall very good condition with light surface wear from minimal use. The bezel has some very superficial surface scratches and scuffs visible under close observations. Bands with some very light surface scuffs. Lower left lug to the bezel with some very small nicks. Double folding clasp with some light surface wear and scuffing. DIAL Dial in excellent condition. MOVEMENT Quadruple tourbillon functioning. The movement is running at time of cataloging, however it was not tested for the accuracy of time or duration of the power reserve and may need service at the buyer's discretion. Please note that Sotheby's does not guarantee the future working of the movement. Please note that only the outer packaging is available. A presentation box is not present. ***Please be advised that the bands on this watch are made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) and thus not sold with the watch, they are for display purposes only. We will remove these bands prior to international shipping.***
"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."

The revolutionary Quadruple Tourbillon demonstrates the firm's drive to continually innovate in the field of precision timekeeping. The watch employs four different tourbillons rotating in two double tourbillon cages. The two interior tourbillons rotate every 60 seconds at at 30° angle, and the two exterior rotate every four minutes.  The 30° angle of the interior tourbillons prevents them from ever staying in a completely horizontal or vertical position, which helps eliminate the most extreme variations in rate.  

The asymmetrical dial provides an elegant display to view both tourbillon cages. This effect is achieved by♍ the use of transparent sapphire bridges between the exterior and interior tourbillons. The two double tourbillon systems are joined by a differential mechanism, so if one escapement briefly passes through a horizontal or vertical position, the other one, rotating at an angle will offset that, leading to more precise timekeeping.  

The firm produces less than ten Quadruple Tourbillons a year, making the present lot not only an exceptional piece of horological artistry, but also extremely rare.𒐪