Prestigious Wristwatches

Hotel Richemond, Geneva, Mar 31, 2001

LOT 549

Breguet, Ref. 3650, case No. 5088F, No. 540, produced in 1992.Very fine and important 18K yellow gold gentleman's wristwatch with tourbillon regulator, 50 hours power reserve, sector for fly back 24 hours indication, leather strap and 18K yellow gold Breguet buckle.

CHF 75,000 - 90,000

USD 48,000 - 56,000

C. three-body, solid, reeded band, straight lugs, screwed bars, transparent back, sapphire crystal. D. "guilloché" silver with painted radial Roman numerals on a plain reserve, aperture for the tourbillon, seconds hand on the tourbillon shaft, sector for power reserve and 24 hours indications. "Breguet" blued steel hands. M. Cal. 560, 24 jewels, hand engraved gilt brass, lever escapement, monometallic balance adjusted to 6 positions, self-compensating Breguet balance-spring.Dial, case and movement signed.Diam. 40 mm.


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Grading System
Grade:
Case: 1

As new
Movement: 1

As new
Dial: 1 - 01

Notes

What is a Tourbillon ?A Tourbillon is a regulating mechanism in which the escapement of a movement is housed withina 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 wheeel as it moves in its downward (arc) direction and slow 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 thetimekeeping becoms constant and consequently adjustable. Created by Abraham Louis Breguet in 1795, the tourbillon is considereted a difficult and complex achievement by any watch manufacturer.