Patek Philippe Perpetual Calendar Retrograde Solid 18K Rose Gold 36mm Watch W/Original Brown Alligator Band (Ref. 5059R) in Winding Patek Philippe Box W/Papers & Pin - This stunning, investment quality timepiece was made by one the most prestigious luxury watchmakers in the industry, Patek Philippe. This Perpetual Calendar Retrograde watch is truly a collector's dream, and a must-have for any watch collector or enthusiast. The watch features: 36mm solid 18k rose gold three-part officer's style case with hinged case back over transparent crystal to view the movement and extended screwed lugs; automatic caliber 315/136, 31 jewel rhodium-plated movement with fausses cotes decoration, straight-line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, and self-compensating free-sprung flat balance spring; white dial with painted radial Roman numerals, outer minute and 1/5 seconds track, retrograde sector for the days of the month in the center, apertures for the days of the week at 9 o'clock, the months at 3, the leap years at 12 and the moon phases at 6, and oxidized gold feuille hands; sapphire crystal; and original chocolate brown alligator strap with 18k rose gold deployment buckle with Calatrava cross detail. The watch is in beautiful condition, and has recently been serviced and is working perfectly. It will come in the original Patek Philippe box which serves as a watch winder, along with the setting pin, Certificate of Origin and literature. Measures approx. 9.5" in length. Movement #: 323XXXX, Case #: 425XXXX, Ref. #: 5059R-001.