Iconic in its status as one of the most desirable watches ever, the Rolex Daytona has grown an ethereal reputation as a watch without equal. Amongst its litany of iconic variants, the "Zenith" Daytona ref. 16520 that we have here is perhaps one of the most legendary thanks to its Zenith El Primero-based Rolex cal. 4030 movement. However, unlike the normal ref. 16520, this example has a 'tropical dial', thanks to its unique patina. Noticed by Osvaldo Patrizzi, the chronograph subdials on the ref. 16520 would turn a light shade of brown due to the organic varnish used, oxidising the material beneath. Sought after due to its position as a rare form of patina, the example we have here features far darker subdials than regular Patrizzi dials (which are rare in their own right), with nearly blacked-out subdials hiding amongst the beautiful black dial. Aesthetically unique, historically significant and mechanically astute, this is one timepiece you don't want to miss out on.