The 1957 Trilogy : Seamaster, Railmaster and Speedmaster
In 1957, Omega released a trio of watches that would go on to become classics: the Seamaster 300, Railmaster, and Speedmaster.
We know now that they were released as individual models thereafter, but in 1957, all three were part of the Seamaster line, and each model represented various fields of use. The Seamaster 300 for diving, the Railmaster for environments in high-magnetism, and the Speedmaster for racing. All three watches shared a non-screw-down crown that guaranteed water resistance through high pressure, reinforced acrylic crystals welded to a steel case, and broad arrow hands – or the distinctive hands with a luminous arrow tip.