Rolex, « Oyster Cosmograph Daytona », so called Big Red, case No. 6197698, Ref. 6263. Made circa 1979. Fine and rare, water-resistant, stainless steel wristwatch with anti-reflective black bezel, round button chronograph, registers, tachometer and a stainless steel Rolex Oyster bracelet. Accompanied by the original box, guarantee and instruction booklet. Case: Three-body, polished and brushed, screwed-down case back, buttons and Triplock crown, tachometer graduation on the bezel to 200 units per hour. Dial: Bicolor black and silver with applied faceted steel baton indexes and luminous dots, outer 1/5th seconds track, subsidiary dials for the seconds, the 12-hour and 30-minute registers. Luminous steel baton hands. Movement: Cal. 727, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance adjusted to 3 positions, shock absorber, self-compensating free-sprung Breguet balance spring, Microstella regulating screws. Dial, case and movement signed. Diam:   38 mm. THICKNESS 14 mm Dial, case and movement in very good condition Start price : 18000