Important Modern & Vintage Timepieces

Hong Kong, Jun 27, 2015

LOT 595

PATEK PHILIPPE REF. 5550P ADVANCED RESEARCH PLATINUM Patek Philippe, Genève, No. 5627728, case No. 4761677, Ref. 5550P. Made in a special edition of 300 pieces, sold February 1st, 2013. Very fine, rare and innovative, self-winding, water-resistant, sealed, platinum wristwatch with perpetual calendar, moon phases, silicon escape wheel, Silinvar Spiromax balance spring and a platinum Patek Philippe deployant clasp. Accompanied by the original winding box with Advanced Research port hole, Certificate of Origin, booklets, solid platinum case back, service box, hang tag and push pin.

Two-body, solid, polished, transparent case back with cyclops lens over escape and balance wheels, rounded bezel, correctors in the band, concave lugs, single diamond (0.02ct) set between the lower lugs, sapphire crystals. Brushed silver with applied pink gold baton indexes and luminous dots, outer minute track, subsidiary dials for the days of the month, of the week, the months, the 24 hours and leap year, aperture for the moon phases. Luminous pink gold feuille hands. Cal. 240, stamped with the Patek Philippe Quality Seal, rhodium plated, fausses cotes decoration, 25 jewels, straight-line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self-compensating free-sprung Silinvar Spiromax balance spring, 21K gold rotor with zirconium ball bearings.