製造商: Harry Winston 年份: Circa 2013 錶殼號碼: 069025 further engraved with limited edition number 05/20 型號名稱: Histoire de Tourbillon 4 材料: 18K white gold and zalium 機芯: Manual, Cal HW4501, 59 jewels 錶帶/ 錶鏈: Leather 錶扣: 18K white gold Harry Winston pin buckle 尺寸: 47mm Diameter 簽名: Case, dial, movement and buckle signed 配件: Accompanied by undated Harry Winston International Warranty, instruction manual, fitted presentation box and outer packaging.
圖錄文章
Harry Winston's Histoire de Tourbillon was a project undertaken with Greubel Forsey's Complitime to showcase the technical possibilities of this fascinating complication and push the boundaries going where few watchmakers had gone before or even since!
Launched in 2013 the Histoire de Tourbillon 4 (the 4th installment as the name implies) is a mind boggling horological masterpiece featuring a complex triple tourbillon.
Three concentric cages sit at different angles and rotate at different speeds. The outermost cage completes a revolution once every 300 seconds (5 minutes), the intermediate cage rotates once every 75 seconds, and the innermost cage spins once every 45 seconds.
To obtain a more than respectable 50-hour power reserve considering the fact that the 3 rotating cages would use a lot of energy, the 134 components of the tourbillons are made of titanium and weigh a mere 1.57 grams! The movement plates and bridges are also in titanium.
Hours are read via the subdial at 1 o'clock whereas the minutes are indicated at 10 o'clock via a dual semi-circle dial, minutes from 0 to 30 are shown on an inner ring with white text on a black background, in conjunction with a short white hand. Minutes from 30 to 60, are presented on a black outer ring in conjunction with a blue tipped hand. The power reserve is discreetly placed on the right side of the case.
A blue hand located above the outer tourbillon points to a 300 second scale on the perimeter of the domed area.
The white gold case sandwiches a middle section made of zalium.
The Histoire de Tourbillon is one of those watches that underlines mechanical genius and vision; a watch so complex that we understand it is more a laboratory of ideas than a commercial venture.
Made in only 20 pieces, the resent example bears number 5.