The Collection of a European Nobleman

Geneva, May 11, 2008

LOT 229

El Primero ChronoMaster Open Zenith, ?ChronoMaster Open - El Primero?, Ref. 18 1260 4021. Sold on October 15th, 2003. Fine, large, thick, self-winding, water-resistant, 18K pink gold wristwatch with square button chronograph, register, tachometer, power-reserve indication, visible escapement and a Zenith 18K pink gold deployant clasp. Accompanied by a Zenith booklet. To be sold without reserve

CHF 5,000 - 8,000

EUR 3,200 - 5,000 / USD 5,000 - 8,000

Sold: CHF 14,400

C. Two-body, solid, polished, stepped bezel and lugs, transparent case back with 8 screws, sapphire crystals. D. Guilloché silver with applied pink gold radial Roman numerals on a plain reserve, subsidiary dial for the 30-minute register, outer tachometer graduation, sector for the power-reserve indication, large aperture to view the escapement and 4th wheel with three-arm seconds hand. Pink gold dauphine hands. M. Cal. 4021, rhodium-plated, oeil-de-perdrix decoration, 39 jewels, straight line lever escapement, monometallic balance, shock absorber, self-compensating flat balance-spring, 22K gold rotor. Dial, case and movement signed. Diam. 45 mm. Thickness 14 mm.


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Grading System
Grade: AA

Very good
Case: 2

Very good
Movement: 2*

Very good

Overhaul recommended, at buyer's expense
Dial: 1-01

As new

HANDS Original

Notes

Zenith The Zenith Company?s history begins in 1865, when Georges Favre-Jacot took up the production of high quality watches in Le Locle, Switzerland. During its impressive history the company was awarded 1565 awards at various exhibitions and it was able to develop and to produce more than 50 different calibers over time. In 1969, during difficult times for the industry, the ?El Primero? movement became the world?s fastest beating chronograph movement, beating at a speed of 36,000 vibrations per hour. It set a new standard and the movement, with some modifications, is still in production today, and is also used by several