Patek Philippe Grandmaster Chime Ref. 6300 Sells for $31M at Phillips

The most complicated wristwatch Patek has ever made — 20 complications including a grande and petite sonnerie — becomes the most expensive watch ever sold at auction.

The most complicated wristwatch Patek has ever made — 20 complications including a grande and petite sonnerie — becomes the most expensive watch ever sold at auction.