The Daytona reference 16520 marked an important turning point for Rolex as it was the first self-winding chronograph introduced in the brand’s history. Incorporating a sapphire crystal for the first time and a larger case, this reference was equipped with a brand new automatic movement based on the famed Zenith El Primero - substantially modified by Rolex. Launched in 1988, this new Daytona was an instant success, resulting in unprecedented demand that would require clients to have to wait as long as seven years to purchase one. Without a doubt, the 16520 elevated the Daytona to its current mythical status. The dial is exceptional, with the ‘Cosmograph’ designation floating beneath the four lines of text at 12 o’clock. Bearing the earliest “R” serial number, this Daytona is also correctly fitted with the highly sought after, first generation stainless steel ‘200’ graduation bezel. Preserved in exceptional condition, it is a “must-have” for the discerning Daytona collector.