Rolex Daytona cosmograph ref16528 oro giallo, Photo 2 on Gmtbroker
Cool Rolex of the Day #960: John Mayer's 6240 Daytona with "3CROC dial" a.k.a "Texas dial" a.k.a. "Mayer dial" (originality in doubt, controversy explained in comments), steel, 37.5mm. Circa 1966 : r/rolex