Rolex Daytona 16520

Rolex Cosmograph Daytona with reference 16520 model, which was introduced as the first self-winding Daytona. This iconic stainless steel chronograph, measuring 40mm in diameter, is notable for being powered by a heavily modified Zenith El Primero movement, known as the Rolex Calibre 4030. Designed as a robust tool for endurance racing drivers, it features a tachymetric scale engraved on the bezel for measuring units per hour and screw-down pushers to ensure water resistance. The watch has a black dial with contrasting sub-dials that are edged in steel, a characteristic of the Zenith-based movement era.