Rolex Cosmograph Daytona, Rainbow Yellow Gold Black Diamond Dial 40MM Watch 116598RBOWDESCRIPTION The Rolex Daytona Rainbow will not be found in any run of the mill watch collection. The 116598RBOW is a true rarity, that launched in the 1980s when Rolex utilized the ultimate luxury tool watch, the Cosmograph Daytona, as a vehicle for precious gemstone experimentation. The 116598RBOW comes with a 40mm yellow gold case that has a screw down case back, a scratch resistant sapphire and a winding crown. The bezel is adorned with 36 rainbow