The Patek Philippe Grandmaster Chime Ref. 6300A-010

HIGHLIGHTS: The Patek Philippe Grandmaster Chime Ref. 6300A-010 is a one-of-a-kind wristwatch made of stainless steel that sold for $31.19 million in 2019. It's the most expensive watch ever sold and the most complicated Patek Philippe wristwatch ever made. Features 20 complications, including a minute repeater, alarm, and date repeater Two complete dials with indications for the complications A swiveling case so the wearer can choose which side faces out A rose gold dial with gold-accented Breguet numerals A case rim made of steel on one side and dark ebony on the other A hand-guilloche hobnail pattern An auxiliary dial that displays "The Only One" when the clock strikes 12 Background The watch was created for the Only Watch charity auction in Geneva in 2019. The proceeds benefit the Monaco Association against Duchenne Muscular Dystrophy. Patek Philippe has contributed a model to every Only Watch auction since the event began in 2005. Ref. 6300A-010 Caliber 300 GS AL 36-750 QIS FUS IRM. Manually wound mechanical movement. Strikework isolator indicator. Second time zone with day/night indicator. Day, date (on both dials), month, leap-year cycle by hands. Four-digit year display in an aperture. 24-hour and minute subdial. Crown position indication (R,A,H). Stainless steel reversible case with guilloched hobnail pattern, protected against humidity and dust (not water resistant). Time side dial in rose gold, with gold applied Breguet numerals. Calendar side in black ebony. 18K solid gold dial plates. Shiny black alligator leather strap with square scales, hand-stitched. Fold-over clasp. Case diameter: 47.7 mm. Thickness : 16.07 mm.