Since their release, the Rolex watch Cosmograph Daytona models were run by three different systems: the Valjoux 72 calibre (which coded in the next versions: 72B or 722, 722-1 and 727), the Rolex watch 4030 movement (in line with the Zenith El Primero) and also the current in-house Rolex watch 4130. These 3 systems could…