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Important Modern and Vintage Timepieces

New York, Sep 14, 2011

LOT 189

FRANCK MULLER - PLATINUM - RETRO PERPETUAL CALENDAR - CHRONOGRAPH Franck Muller Genève, "Cintrée Curvex - Chronograph - Perpetual Retrograde Calendar," No. 10, Ref. 6850 CC QPE. Made circa 2001. Very fine, rare and important, tonneau-shaped, self-winding, platinum wristwatch with 40 hours autonomy, olive-shaped button chronograph, retrograde perpetual calendar, moon phases and a platinum Franck Muller buckle. Accompanied by the original fitted box and a Certificate of Origin.

C. Two-body, solid, polished and brushed, case back with 4 screws, domed sapphire crystal. D. Guilloche silver with painted radial Arabic numerals and indexes, outer 1/5th seconds track with 5-seconds Arabic markers on a plain reserve, subsidiary guilloche silver dials for the days of the month, of the week, the 24 hours and the leap year, retrograde sector for the months and equation of time at 6, aperture for the moon phases at 12. Blued steel spade hands. M. Cal. 1133 BPE, rhodium-plated, fausses cotes decoration, 37 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, self-compensating fl at balance spring, micrometer regulator. Dial, case and movement signed. Dim. 34 x 47 mm. Thickness 14 mm.

USD 15,000 - 25,000

CHF 12,000 - 20,000 / EUR 11,000 - 18,000

Sold: USD 25,000


Grading System
Grade: AAA

Excellent

Case: 3

Good

Movement: 1*

As new

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 fi rst to produce wristwatches with perpetual calendar and moon phases, in 1924. In 1925, Patek Philippe modifi ed a lady?s pendant watch with perpetual calendar to produce the world?s fi rst instantaneous changing perpetual calendar wristwatch with leap year indication.