A Rolex. Daytona. Reference 16520. Also known as the ‘Zenith’ Daytona. The first self-winding Daytona reference. Equipped with the modified Zenith caliber 4030. Circa 1988. And if that wasn’t enough? This awesome watch in stainless steel features an ‘Inverted 6’ dial. A super-rare detail, this refers to the upside-down figure 6 on the register situated at 6 o’clock on the dial. This highly coveted dial variant on an already rare Daytona model is - appropriately enough - lot 6 in our Watches Online sale! Estimate CHF 15,000-30,000 and less than 24 hours left to bid! #sothebyswatches rolex #rolex #daytona #chronograph #rolexzenith #rolexzenithdaytona #watchesofinstagram #ref16520 #inverted6