Important Watches, Collector's Wristw...

The Ritz-carlton Hotel, Hong-kong, Jun 08, 2002

LOT 329

Breguet "Tourbillon", Ref. 3650. Produced in the 1990's.Very fine and important, water-resistant, 18K yellow gold gentleman's wristwatch with one-minute tourbillon regulator, 55-hour power reserve, fly-back sector for 24-hour nocturnal and diurnal indications, leather strap and an 18K yellow gold Breguet buckle.

HKD 350,000 - 430,000

EUR 50,000 - 62,000 / USD 45,000 - 55,000

Sold: HKD 414,000

C. three-body, solid, reeded band, straight lugs, screwed bars, transparent back, sapphire crystal. D. guilloché silver with eccentric brushed silver hour ring dial with painted radial Roman numerals, aperture for the visible tourbillon, seconds hand on the tourbillon shaft, sectors for power reserve and fly-back 24-hour indication. "Breguet" blued steel hands. M. Cal. 560, (Brevet du 7 Messidor An 9), hand-engraved gilt brass plate, 24 jewels, straight line lever escapement, monometallic balancadjusted to 6 positions, self-compensating Breguet balance-spring. Dial, case and movement signed.Diam. 40 mm.


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Grading System
Grade:
Case: 2

Very good
Movement: 2

Very good
Dial: 2 - 01

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 obtain 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 as it moves upward, creating deviational errors in the timekeeping. By placing the balance and escapement in a carriage that revolves 360o per minute, these errors become averaged andthe timekeeping becomes constant and consequently adjustable. Created by Abraham Louis Breguet in 1795, the tourbillon is considered a difficult and complex achievement by any watch manufacture.