Rolex Daytona 6240 Cosmograph, this is a rare and early version of the Daytona with screw-down pushers and "Daytona" present on the dial without "Oyster", stainless steel case in very good condition on a stainless steel U.S.A. Jubilee bracelet, manual wind caliber 722 movement, 12-hour chronograph, original silver dial with black subdials, original luminous hands, screw-down caseback and "Mark II" screw-down chronograph pushers (were likely service replacement), acrylic crystal, original bakelite tachymeter bezel, 1.26M serial (circa 1966). Diameter: 37mm, Thickness: 13.5mm. Excellent Condition with European Watch Company leather pouch.