Omega Railmaster
Omega's watch for railwaymen and technicians, protected against magnetic fields.
The Railmaster came out in 1957 together with the Seamaster 300 and the Speedmaster, as three tool watches for different trades. It was made for those who worked near electrical installations and withstood strong magnetic fields.
Materials: Stainless steel, soft iron; hand-wound movement
Manufacture: Made in Biel; the movement sits in an inner case of soft iron.
The plain black dial with large numerals.
The thick case without a rotating bezel.