40MM Daytona 126508 (2025) Pre-Owned RolexThe Rolex Cosmograph Daytona 126508 is the 40mm Daytona in solid 18k yellow gold with an 18k yellow gold bezel featuring an engraved tachymetric scale. Named after the legendary Daytona International Speedway in Florida, the Cosmograph Daytona was designed to be the ultimate timing tool for endurance racing drivers, allowing them to measure speed and distance with precision. The tachymetric scale on the bezel enables the wearer to read average speeds