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Important Modern & Vintage Timepieces

Hong Kong, Jun 25, 2010

LOT 429

Patek Philippe Ref. 5101P ? 10 Day Tourbillon Patek Philippe, Genève, "10 Days Tourbillon", movement No. 3361010, case No. 4244226, Ref. 5101P. Sold on February 20th , 2004. Extremely fine and very rare, rectangular and curved, Art Deco style diamond and platinum chronometer wristwatch with one-minute tourbillon regulator, tandem mainspring barrels for 10-day power-reserve and a platinum Patek Philippe buckle. Accompanied by the Certificate of Origin, chronometer rating certificate, instructions in a leather folder, the original wood fitted box.

C. Two-body, solid, polished, stepped curved sides, transparent case back with 4 screws, Top Wesselton diamond set between the lugs at 6, sapphire crystals. D. Salmon-colored with applied black oxidized gold Breguet numerals, subsidiary seconds dial. Black oxidized gold feuille hands. M. Cal. TO 28-20/222, rectangular, stamped with the Seal of Geneva Quality Mark, rhodium-plated, fausses cotes decoration, 29 jewels, 6 of which are set in gold chatons, tandem mainspring barrels, lateral lever escapement with one-minute tourbillon regulator with A-shaped cage under a polished steel bridge, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, 21,600 semi-oscillations per hour, shock absorber, self-compensating free-sprung Breguet balance spring. Dial, case and movement signed. Dim. 30 x 52 mm. Thickness 12 mm.

HKD 1,400,000 - 1,700,000

USD 180,000 - 220,000 / EUR 147,000 - 180,000

Sold: HKD 1,680,000

Grading System
Case: 1

As new

Movement: 1

As new

Dial: 1-01

As new

HANDS Original


Consigned by the original owner, the present watch has never been offered at auction before. The Reference 5101 includes two features which are technically very difficult to fit within the confines of a rectangular movement: two tandem mainspring barrels and a tourbillon regulator. The tourbillon regulator in the Ref. 5101 is not displayed through the dial in the manner of other tourbillon wristwatches; this is because the oil used to lubricate the mechanism is sensitive to ultraviolet light and will decay if exposed to daylight. The reference 5101 in platinum has achieved the official C.O.S.C. (Contrôle Officiel Suisse de Chronomètre) certification and the Geneva Seal