Swiss 18 carat gold chrono tachymeter lever watch Circa 1934

Unusual pocket watch with multi colour tachymeter scale
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An unusual chrono tachymeter with multicolour tachymeter scale, made by Omega in la Chaux-de-Fonds, Switzerland, circa 1934. This watch has a numbered case crafted from 18 carat gold and its white enamel dial features a rare enamel dial with five colour tachymeter scale, counter at 12 o’clock, a subsidiary seconds dial at 6 o’clock, gold hands and is marked Importé de Suisse and Cadran Breveté S.G.D.G. (Dial Patented without government guarantee). The numbered movement has a club tooth lever escapement, a screw compensation balance and an intermediate wheel chronograph.
The dial and movement are signed.
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Diameter: 50 mm
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Weight: 88 g
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Signed: Ω Omega
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The so called S.G.D.G. tachy dial enables the measurement of any speed between 10.5 and 240 units without the aid of calculations. The 30 minute counter begins with five differently coloured minute segments that indicate the colour of the tachometer scale on which the speed can be read directly. This rare patented Omega chronograph was made mainly in silver. Gold examples are extremely unusual.