$40,120
Tourbillon No. 12 Girard-Perregaux, La-Chaux-de-Fonds, "Tourbillon With One Gold Bridge and Power Reserve", No. 12, Ref. 9920. Made in the 1990s. Extremely fine and rare, 18K pink gold wristwatch with visible one-minute tourbillon regulator under one 18K pink gold bridge, power reserve and an 18K pink gold Girard-Perregaux deployant clasp. Three-body, solid, polished, case back with 6 screws, straight and curved lugs, sapphire crystal. Guilloche silver with radial Roman numerals on a plain reserve, at 6 a polished 18K pink gold bridge over the visible one-minute tourbillon regulator with its "A"-shaped carriage and blued steel seconds hand, aperture for the power reserve at 12. Blued steel spade hands. Cal. T3P, rhodium-plated, fausses côtes and oeil-de-perdrix decoration, 20 jewels, lateral lever escapement with one-minute tourbillon regulator, tourbillon carriage of the type designed by Ernest Guinand, monometallic balance adjusted to 6 positions, shock absorber, self-compensating Breguet balance spring. Dial, case and movement signed. Diam.36 mm. Thickness 10 mm. Property of Various Owners 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 de
Auctioneer:
Antiquorum
Date:
2007-12-05
