This Rolex Cosmograph Daytona Paul Newman Ref. 6239 is the most expensive watch in the world, auctioned for 17 million US dollars
Movement Rolex 722 (base Valjoux 72) | Hand-wound | Diameter: 29.5 mm | Frequency: 18,000 vph (2.5 Hz) | Jewels: 17 | Hours, minutes, small seconds, column wheel chronograph | Power-reserve: 48 hours
Movement Rolex 722