The Collection of a European Nobleman

Geneva, May 11, 2008

LOT 115

Cintrée Curvex - Quantième Perpétuel Biretro Franck Muller, Genève, "Cintrée Curvex - Quantième Perpétuel Biretro", Chronographe, Ref. 6850 CC QPB. Made circa 2003. Very fine, tonneau-shaped and curved, self-winding, water-resistant, 18K white gold wristwatch with olive-shaped button chronograph, bi-retrograde perpetual calendar, leap year indication, moon phases and an 18K white gold Franck Muller buckle.

CHF 27,000 - 37,000

EUR 17,000 - 23,000 / USD 27,000 - 37,000

Sold: CHF 40,800

C. Two-body, solid, polished and brushed, engraved case back with 4 screws, domed sapphire crystal. D. Guilloche silver with painted stylized Arabic numerals, subsidiary dials for the 12-hour and 30-minute registers, the months, sectors for the retrograde date and week, aperture for the leap year and moon phases. Luminous blued steel lozenge hands. M. Cal. 5888 BR, rhodium-plated, fausses cotes decoration, 45 jewels, straight line lever escapement, monometallic balance adjusted to temperatures, shock absorber, self-compensating flat balance spring. Dial, case and movement signed. Dim. 34 x 47 mm. Thickness 14 mm.


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Grading System
Grade: AAA

Excellent

Case: 3

Good

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 1-01

As new

HANDS Original

Notes

What is a Perpetual Calendar?
A perpetual calendar is a calendar mechanism which, unlike a simple calendar, automatically adjusts to the correct day of the month by accounting for the varying durations of each month, as well as self-correcting for the 29th of February during leap years. Audemars Piguet are said to have been the first firm to produce wristwatches with perpetual calendar and moon phases in 1924. In 1925, Patek Philippe modified a lady?s pendant watch with perpetual calendar to produce the world?s first instantaneous changing perpetual calendar wristwatch with leap year indication.