This record would be barring the Patek Grandmaster Chime Ref ... crown as the most expensive wristwatch ever sold. The Patek Philippe 1518 was the world's first regular-production perpetual ...

6300 Grandmaster Chime, the most complicated Patek Philippe wristwatch ever made. With 20 complications, a reversible case with two independent dials and six patented innovations, the model ...

Patek Philippe calls the Grandmaster Chime an "intelligent watch" with features such as a minute repeater, instantaneous perpetual calendar with a four-digit year display, and a second time zone.

For its 175th anniversary, the luxury Swiss watchmaker Patek Philippe invented a collection of limited-edition commemorative timepieces called The Grandmaster Chime with 20 complications ...