60,000 CHF
Platinum and Pink Gold Tourbillon Breguet, Brevet du 7 Messidor An 9, “Tourbillon No. 012”, No. 425, Ref. 3450. Made circa 1993. Very fine and rare, platinum and 18K pink gold wristwatch with visible one-minute tourbillon regulator with a platinum Breguet buckle. Accompanied by a Breguet box. Three-body, bicolor, polished, reeded band surrounded by two pink gold rims, transparent back, platinum case, straight lugs, sapphire crystals. Guilloché silver with painted black radial Roman numerals on an off-center plain reserve showing the Breguet secret signature, visible tourbillon cage on the 6. Blued steel Breguet hands. Cal. 558, hand-engraved along with the inscription "Brevet du 7 Messidor An 9", 21 jewels, lateral lever escapement, monometallic balance adjusted to 6 positions, self-compensating Breguet balance spring. Dial, case and movement signed. Diam. 36 mm. Thickness 9 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 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
Auctioneer:
Antiquorum
Date:
2009-03-29
