Patek Ref. 5020R Rose Gold Perpetual Chronograph. Production of this Reference began in 1995 and ceased in 2001. Very fine and extremely rare, tonneau shaped, astronomic, water-resistant, rose gold wristwatch with applied Breguet numbers chronograph, perpetual calendar and moon phases. Hodinkee wrote there were only 220 examples made in all 4 metals, another scholar has the number at 236. Either way this is an extraordinary small number, much less than its predecessors. Accompanied by the original Certificate of Origin, Spare solid back, setting pin, and original inner & outer PP boxes and hang tags.
Case is a two body, concave lugs, sapphire crystal, never polished and in mint condition with no scratches or dings.
Dial is silver with applied Breguet hour markers, subsidiary seconds and 30-minute register dials concentric with 24 hours and leap year indication, graduation for the date, apertures for the days of the week, the months and the moon phases.
Movement is the Cal. CH.27-70 Q, stamped with the Geneva Quality Hallmark.