ROLEX DAYTONA Part number: 6240. Serial number: 1297626. Steel case, graduated tachometric bezel. Black dial highlighted by three counters (seconds, minute totalizer, hour totalizer). Automatic mechanical movement (calibre 72B). Steel oyster bracelet with folding clasp signed (78350-19), end pieces 571. Plexiglas glass. Circa 1966. Diameter: 37 mm. A stainless steel wristwatch mechanical movement, by Rolex. Circa 1966. RC : Sold as is, traces of wear and use. The bezel does not match reference 6240 which must be in Bakelite. This one comes from a reference 6265. Note that the pushers and hands are serviceable. The movement was functional at the time of writing, but needs to be serviced, without warranty.