1950s Seamaster 300, 1957

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In 1957, Omega debuted the Railmaster, the Speedmaster and the Seamaster 300. With

its brushed and polished stainless steel case and black “tropical” dial, it was sought after for its water resistance. “The Naïad crown worked with an ingenious springloaded seal that actually got better the deeper it went,”

says Protopapas.