Swiss stainless steel watch with chromed short chain Circa 1940

Stainless steel keyless lever pocket watch
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A fine Swiss, stainless steel, a keyless pocket watch with a chromed short chain, circa 1940. A polished and brushed case. Brushed silver dial with applied gilt Arabic numerals, outer minute track, subsidiary seconds. Gilt alpha hands. A rhodium-plated movement, Geneva striping decoration, 18 jewels, straight-line lever escapement, monometallic balance, blued steel Breguet balance spring with a terminal curve, swan neck micrometre regulator.
Dial and movement signed.
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Diameter: 45 mm
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Signed: Technicum Cantonal School  Bienne
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The case is slightly scratched.