Case material: Steel; Charge: Automatic; Conditions: Excellent Year : 1967; Presentation condition : With dealer guarantee ; Model: Daytona Price on request Gmtbroker Reference: 6240 Manufacturer: Rolex Model: Reference 6240 Serial/Year: Circa 1967 Grade: (What's This?) IV - Vintage Gender: Men's Features / Movement: Manual winding caliber 722, 17 jewel chronograph movement.  Case: Very good stainless steel 37.5mm water proof case. Black bezel insert is in excellent condition. The case features strong lugs.  Dial: Excellent black dial with white sub-dials.  Bracelet: Complimentary black leather strap w/ tang clasp. Comments: This vintage timepiece comes w/ Bob's 3-day satisfaction guarantee and one year warranty Vintage Rolex Daytona Reference 6240 By Paul Altieri,  The Rolex Daytona reference 6240 is one of the rarest and most desired Rolex chronographs. The Daytona reference 6240 was the first Rolex chronograph to feature "screw-down" chronograph pushers. These pushers were designed to lock the two pushers in place, increasing water resistance and allowing these Daytonas to later gain the moniker "Oyster" on the dial signaling enhanced water resistance. Daytona reference 6240 examples also frequently did not say "Oyster" on the dial and instead shared dials that were the same as the Rolex 6239. Daytona reference 6240 examples had early Mark 0 or Mark 1 pushers that featured wider and more aggressive looking screw-down pushers. They are highly prized by collectors, and many were changed to later Mark 2 and Mark 3 pushers during service. The present wa