Rolex Daytonas featuring a ‘Pulsometer’, and therefore known as ‘medical Daytonas’, are among the rarest chronographs ever made. With an external blue scale, this 1967 model will set pulses racing in Geneva tomorrow night, when it goes on the market for the first time (est. CHF 500,000-1,000,000). Regram frankbeverett #SothebysWatches #SothebysGeneva #Rolex #VintageRolex #VintageWatch #Daytona #mo_geneva #chronograph #pulsometer