Rolex manufactured chronograph watches from the mid-1930’s. However, the first watch recognisable as the modern and collectible sports watch was the Rolex Cosmograph (model 6239) launched in 1960.
In North America Rolex often added the name Daytona from Daytona Beach Florida.
Daytona Beach had been the home of Car testing and racing for decades and was known as the ‘World of Speed’. It was a logical step for Rolex and Daytona to be linked as a mark of these truly collectable watches.