So-called "Paul Newman" Rolex Cosmograph "Daytona, Ref. 6241. Produced in the 1970s. Very fine and rare, water-resistant, 18K yellow gold gentleman's wristwatch with round button chronograph, registers and black anti-reflection bezel with tachometer . three-body, solid, polished and brushed, screwed-down case back and crown, tachometer graduation on the bezel to 200 units per hour. bicolored black and "guilloché" gold with tritium-coated black indexes, sunk auxiliary dials for the seconds, the 12-hour and 30-minute registers. Tritium-coated gold "Bâton" hands. Notes Ref. 6241241Produced from 1961 to 1976, the first examples with exotic dial, the so-called "Paul ewman", came onto the market around 1970.Similar watches are published in "Rolex, Collecting Wristwatches", by Osvaldo Patrizzi, Guido Mondani Editore, Genova, 2001, pp. 439 -445 and 487-488.