Important Collectors Watches, Pocket ...
New York, Oct 17, 2008
LOT 149
Tourbillon Chronographe Audemars Piguet, Genève, "Royal Oak Off-Shore, Tourbillon Chronograph," movement No. 570772, case No. F03642, Ref. 25977 ST. Made in a limited number, circa 2005. Very fine and important, large, water-resistant, stainless steel wristwatch with visible one minute tourbillon regulator, round button chronograph, register and a stainless steel Audemars Piguet integrated bracelet with concealed deployant clasp. Accompanied by the original certificate and large mahogany fitted box.
USD 70,000 - 90,000
EUR 50,000 - 65,000 / CHF 78,000 - 100,000
Sold: USD 72,000
C. Three-body, polished and brushed, transparent case back with 8 screws, octagonal bezel with 8 hexagonal white gold screws, screwed-down hexagonal winding-crown and pushers, sapphire crystals. D. Blue checkerboard pattern with applied blue luminous indexes, silvered subsidiary dials for the seconds and the 30-minute register, aperture for the tourbillon regulator under a polished steel bridge at 6, outer minute/seconds division with five Arabic numerals. Luminous white baton hands. M. Cal 2889, rhodium plated, oeil de perdrix decoration, 25 jewels, lateral lever escapement with one-minute tourbillon regulator, monometallic balance adjusted to heat, cold and 5 positions, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 47 mm. Thickness 13 mm.
| Grading System | |
|---|---|
Grade: |
|
Case: 2 |
Very good |
Movement: 2* |
Very good Overhaul recommended, at buyer's expense |
Dial: 1-01 |
As new HANDS Original |
Notes
A Tourbillon is a regulating mechanism in which the escapement of a movement is housed within a revolving carriage. It was developed in an effort to attain better precision.When a watch is in a vertical position, the force of gravity will speed the balance wheel as it moves in its downward (arc) direction and slow it as it moves upward, creating deviational errors of timekeeping. By placing the balance and escapement in a carriage that revolves 360° per minute, these errors become averaged and the timekeeping becomes constant and consequently adjustable. Created by Abraham Louis Breguet in 1795, the tourbillon is considered a difficult and complex achievement by any watch manufacturer.