Rare Swiss waterproof pocket watch with two-tone dial Circa 1920

Stainless steel lever pocket watch by Omega
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An extremely rare Swiss steel waterproof pocket watch with a two-tone dial and 24-hour indication, circa 1920. This Omega’s first waterproof pocket watch features a simple steel case and a two-tone silver-plated dial. The dial has Arabic radial hours, an outer minute track, a 24-hour indication, a subsidiary dial for the seconds, and baton hands. The watch has a 1/2 plate movement with a lever escapement and a gold screw compensation balance.
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Diameter: 50 mm
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Weight: 91 g
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Signed: Omega
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This is Omega’s first waterproof pocket watch, designed for colonial officials, miners, railway employees, and others. It features a strong Staybrite steel case, unbreakable glass, protection against water, dust, and moisture, and insensitivity to temperature changes.