Swiss metal Olympic split second chronograph Circa 1965

Pocket watch with three complications
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A Swiss black painted metal and chromium plated metal keyless Olympic pocket watch, made by Omega in Chaux-de-Fonds, circa 1965. Open faced, plain case with split seconds chronograph and a minute counter. Snap on case back, black dial with Arabic numerals, subsidiary seconds at 6 and white hands. Three horological complications: 1/10 second chronograph, activated by the winding crown. Split seconds, activated by the round shaped push piece located on the case band at 11.30. Half instantaneous 30 minute counter, subsidiary dial at 12 o’clock. The movement has a lever escapement. The inside signed by the watchmaker and with serial number 304488. The dial, case and movement are signed.
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Diameter: 65 mm
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Signed: Ω Omega, Fab. Suisse
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Accompanied by original protective red plastic fitted box with neck strap.