The 45mm long case with a 23mm body vividly displays its distinct value in a way that is strikingly different from others, radiating the brilliance of its deep red body throughout its surroundings, etching its presence into the minds of all who behold it. Even in its mere existence, it exudes an aura. Ref.3937 Railway... The red 9-carat solid gold body. Enhancing its value as a banana watch, the addition of steps on both sides of the case gives it an appearance reminiscent of railroad tracks, hence the name "Railway." The beauty of the curved lines flowing from the engraving to the lugs, which makes one want to deny the very existence of the 9-carat solid rose gold, is referred to as Gabrielle, expressing a unique world that could easily be called artistic art. The true heartbeat echoing from this red world is embodied in the 300 units that were created for the exceptionally long case. By incorporating two intermediate gears, which normally do not exist, that connect the spring to the pivot hole to transmit torque to the round hole, the machine itself was elongated. Naturally, this beating Rolex carries with it the honor of having won the A prize at the Geneva Observatory for the first time, and the history of the current Rolex Bienne company developing those 300 units, still a family-owned enterprise of the Eglard family alongside Rolex Geneva, is significant in the history of producing renowned Rolex timepieces. The collaboration with Gruen at the time led to the development of the remarkable 300 units with patent number 120849, and it is no exaggeration to say that the focus on precision is the origin of Rolex's chronometer legacy. This latest batch of 300 units remains the best-adjusted mechanism, surpassing the official five-position adjustments since it has the capability of self-testing within the official chronometer association in an era when such testing is possible. The watch face shows no signs of wear, and the back bears no traces, with the lettering "CERTIFIED CHRONOMETER" — certified by their own testing, absent of the "OFFICIAL" label — and "SWISS MADE" delicately portrayed from the old ROOLEX emblem. Even under a 15x magnification, characteristic of a redial, there is no sign of ink bleeding, a testament to the highest quality of craftsmanship. Additionally, for the red gold body, it is essential that the watch features either a light pink or salmon pink dial, further substantiating this piece as the ultimate original masterpiece.