Hamilton Watch American Classic Timeless Classic Rail Road. The new Hamilton RailRoad series takes the American brand right back to its proud roots, to the end of the nineteenth century. That was the time when Hamilton earned the title of The Watch of Railroad Accuracy, providing railroad staff and passengers across North America with accurate and reliable pocket watches. The designers of todays Hamilton RailRoad wristwatches have transformed this classic style into a modern day, elegant look with an edge.