A Rolex Reference 2508 WWII Military Chronograph wristwatch from Switzerland. Circa: 1930s. Hand winding movement. At 38mm, its notably large for its era, crown not included. The original dial appears immaculate, almost as if brand new. The movement functions excellently, bearing the inscription, Rolex Geneve 17 Rubis Valjoux 22. The inside of the back case is marked with 2508, though the case back appears to be a later addition and may not be original. Launched in the mid 1930s, reference 2508 was Rolexs very first model to feature two chronograph registers, as well as two buttons to operate the mechanism. The reference can generally be divided into two series: while models from the first generation feature olive pushers and a larger case size, second generation specimens feature rectangular pushers and a relatively smaller case diameter. WWII Military Wrist Watches, Mens Luxurious Accessories For Collectors.