PATEK PHILIPPE REF. 3990 FACTORY SEALED YELLOW GOLD & DIAMONDS Patek Philippe, Genève, movement No. 3047280, case No 4216254, Ref. 3990J. Made circa 2000. Very fine and important, water-resistant, 18K yellow gold and diamond-set wristwatch with round button chronograph, register, perpetual calendar, moon phases, with sapphire crystal back and an 18K yellow gold Patek Philippe deployant clasp. Accompanied by an additional solid 18K yellow gold case back, setting pin and hang-tag. Accompanied by the original fitted box,Extract from the Archives and Certificate of Origin., Two-body, solid, polished, screw-down transparent case back, bezel set with 40 tapered baguette white diamonds, fluted lugs, correctors in the band, sapphire crystals. Silver with applied baton and square diamond hour indexes, subsidiary guilloche dials for the seconds and the 24-hours, the 30-minute register and the leap year, graduation for the days of the month, outer 1/5th second scale, aperture for the days of the week, the months and the moon phases. Luminous yellow gold feuille hands. Cal. CH27-70 Q, stamped with the Seal of Geneva Quality Mark, rhodium-plated, fausses cotes decoration, 24 jewels, straight line lever escapement, Glucydur Gyromax balance adjusted to heat, cold, isochronism and 8 positions, shock absorber, self-compensating free-sprung Breguet balance spring.
