The Collection of a European Nobleman

Geneva, May 11, 2008

LOT 147

Ref. 5250G, Limited Edition Annual Calendar with Silicon Escape Wheel Patek Philippe, Genève, ?Patek Philippe Advanced Research? Silicon Escape Wheel?, movement No. 3636006, case No. 4339235, Ref. 5250G. Made in a limited edition of 100 pieces in 2005, sold on February 27, 2006. Very fine, rare and innovative, center-seconds, self-winding, water-resistant, 18K white gold wristwatch with annual calendar, power-reserve indication, moon phases, silicon escape wheel and an 18K white gold Patek Philippe deployant clasp. Accompanied by the Certificate of Origin and booklet.

C. Two-body, polished, transparent screwed-down case back with cyclops lens over the escape wheel, curved bezel, correctors in the band, concave lugs, sapphire crystals. D. Brushed silver with applied black baton indexes and Arabic quarter-hour numerals, luminous dots, outer minute track, subsidiary dials for the days of the week, the months, aperture for the moon phases and the date at 6, power-reserve indication below 12. Luminous white gold feuille hands. M. Cal. 315/266, stamped with the Seal of Geneva Quality Mark, rhodium-plated, fausses cotes decoration, 36 jewels, straight line lever escapement, silicon escape wheel, the bridge with additional milled opening, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, selfcompensating free-sprung flat balance spring, 21K gold rotor with zirconium ball-bearings. Dial, movement and case signed, back crystal inscribed ?Patek Philippe Advanced Research?. Diam. 39 mm. Thickness 11.7 mm.