PATEK PHILIPPE REF 5104 MINUTE REPEATER PERPETUAL RETROGRADE CALENDAR SKELETONIZED PLATINUM Patek Philippe, Genève No. 5000313, case No. 4521383, Ref. 5104P. Sold on July 20, 2011. Extremely fine, rare and important, minute-repeating, astronomic, self-winding, platinum wristwatch with perpetual calendar, retrograde date, moon phases, leap year indication and a platinum Patek Philippe buckle. Accompanied by a fitted box and Certificate of Origin within a leather folio. \n\nThree-body, solid, polished, rounded bezel, transparent case back, concave and curved lugs, sides decorated with perforated pink gold sections, sapphire crystals. Skeletonized, subsidiary transparent sapphire crystal discs for the days of the week, the months, the leap year and the moon phases, outer blue ring with sector for the retrograde date. Skeletonized navy blue hands, red half-moon for the retrograde date. Cal. R 27 PS QR LU, stamped with the Seal of Geneva quality mark, rhodium-plated, fausses cotes decoration, 41 jewels, straight-line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self-compensating free-sprung flat balance spring, 22K pink gold decorated micro-rotor, repeating on gongs by activating slide on the band. Dial, case and movement signed.