Rolex Cosmograph Daytona Big Red Ref. 6263, Cal. 727, Case No. 5382619, Dimensions 37 mm, circa 1978, Origin Swiss Case: steel, screw back ref. 6263, screwed "Rolex" winding crown without dots, screwed chronograph pushers, black bezel with tachy scale (MK I), later steel "Oyster" bracelet ref. 78350 with endlinks stamped 557B, clasp R11, bracelet length 145 mm, total length 180 mm. Dial: silvered. Movm.: Manual. The "Oyster Cosmograph Daytona" reference 6263 is a must for most collectors of Rolex timepieces – not only because the watch is a true cult icon but also because of its beautiful and appealing overall design. The combination of the silvered dial with the red Daytona logo, the black subsidiary dials and the attractive black acrylic bezel presents a thrilling contrast to the sportive yet elegant steel case. References 6263 (with acrylic bezel) and 6265 (with engraved steel bezel) are available in two versions: with white dial with black subsidiary dials and with black dial with white subsidiary dials. References 6263 and 6265 were introduced in 1970 to replace references 6262 and 6264 (without screw-down pushers) and featured the larger "Daytona" lettering in red from about 1974, hence the name "Big Red". This timepiece dating from 1978 is in excellent condition; it is a beautiful and well-balanced watch that makes a fine companion for any Rolex lover. The warm, silvery-hued dial with the custard-coloured luminous dots and the cherry red Daytona logo is particularly breathtaking and clashes magnificently with the black bezel and the three black chronograph registers. Case: very good, slightly worn. Dial: very good. Movm.: very good, capable of running, cleaning recommended.