$34,500
Girard-Perregaux, La-Chaux-de-Fonds, "Tourbillon sous trois Ponts d'Or No. 1" Production of this reference started in 1999. Extremely fine, rare and important, 18K, yellow gold gentelman's wristwatch with one minute tourbillon regulator under three golden bridges and an 18K yellow gold Girard-Perregaux buckle. Accomopanied by a fitted box. three-body sollid, polished and brushed straight and curved lugs, domed sapphire crystal. Cal. 9700, rhodiumplated, "fausses-côtes" and " œil-de-perdrix" decoration, 20 jewelsd, one minute tourbillon regulator with lateral lever escapement, A-shapedd tourbillon carriage of the type designed by Ernest Guinand, monometallic b alance adjusted to 6 positions, shock-absorber, self-compensating Breguet balance-sprind. Dial, case and movement signed. Diam.36 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 deviational errors of timekeeping. By placing ghe 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 a
Auctioneer:
Antiquorum
Date:
2002-09-25