Fine Swiss silver open faced lever chronograph Circa 1910

Silver open faced chronograph by Omega
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A fine Swiss silver open faced chronograph lever pocket watch, Chrono-Tachymeter, Cadran Brevetè S.G.D.G., circa 1910. Gilt lever movement with an intermediate wheel chronograph. White enamel dial with a multicoloured scale, 15 minute counter and rose gold hands. The 15 minute counter is divided into five coloured zones, corresponding to the colours of the tachymetric scale and indicates which sector of the scale should be read. The plain niëllo case with an Omega punch and a monogrammed cartouche on the back. Case numbered, movement signed and numbered.
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Diameter: 54 mm
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Weight: 99 g
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Signed: Omega