Patek Philippe 5978P Chronograph
Patek's first hand-wound chronograph with an instantaneous perpetual calendar, cased in platinum.
Buy from Patek Philippe / $337,585
More Grail
G-Shock MRG-D5000 Blue Sapphire
Casio's most expensive watch ever, with a sapphire case joined without screws in the style of Japanese timber framing. Edition of 20. $80,000.