66,000 CHF
Tourbillon Chronograph Audemars Piguet, Genève, "Jules Audemars", "Tourbillon, Chronograph", movement No. 505275, case No. E 61260, Ref. 25909OR. Very fine and rare, large, 18K pink gold wristwatch with visible one-minute tourbillon regulator, round button chronograph, register and an 18K pink gold Audemars Piguet deployant clasp. Accompanied by the original fitted box, certificate and instruction booklet. Three-body, solid, polished and brushed, stepped bezel, straight lugs, transparent case back, sapphire crystals. Off-white with pink gold radial Roman numerals, outer minute/second division, 30-minute register at 3, aperture for the tourbillon regulator under a polished steel bridge at 6, carrying the seconds hand. Pink gold skeleton feuille hands. Cal. 2879/1, rhodium-plated, fausses cotes decoration, 30 jewels, lateral lever escapement with one-minute tourbillon regulator with steel cage and 3 equidistant polished steel arms, monometallic balance adjusted to heat, cold and 5 positions, self-compensating Breguet balance spring. Dial, case and movement signed. Diam. 43 mm. Thickness 13 mm. Notes What is a Tourbillon? 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 devi
Auctioneer:
Antiquorum
Date:
2009-03-29
