Important Collectors' Wristwatches, P...

Geneva, May 08, 2010

LOT 167

Patek Philippe Ref. 5101P ? 10 Day Tourbillon Patek Philippe, Genève, "10 Days Tourbillon", movement No. 3361312, case No. 4378806, Ref. 5101P. Sold on December 18, 2006 by G. Collins & Sons, British Crown Jewellers and personal jeweller to Her Majesty Queen Elizabeth II. Extremely fine and very rare, rectangular and curved, Art Deco style 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 and a limited edition Patek Philippe art print ? VI-2003 illustrating the movement of the Ref. 5101.

CHF 200,000 - 300,000

USD 190,000 - 285,000 / EUR 140,000 - 210,000

Sold: CHF 246,000

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.


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Grading System
Grade:
Case: 2-8

Very good

Slightly scratched
Movement: 1

As new
Dial: 1-01

As new

HANDS Original

Notes

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 acheived the official C.O.S.C. (Contrôle Officiel Suisse de Chronomètre) certification and the Geneva Seal.
G. Collins and Sons Ltd, Tunbridge Wells. Received Her Majesty the Queen?s Royal Warrant at the beginning of 2005. Harry Collins became Crown Jeweller in July 2007.