Swiss yellow gold keyless dress watch with date Circa 1965

Gold dress watch with centre seconds
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A fine and rare centre seconds keyless 18 Carat yellow gold dress watch with date, made by Omega in Bienne, Switzerland, circa 1965. Two body, solid, polished and brushed case with inclined stepped bezel and recessed crown.
Satine silver dial with applied baton indexes, outer minute, seconds divisions, date aperture at 3 o’clock and black baton hands. Copper coloured movement with 17 jewels, straight-line lever escapement, four-arm monometallic balance adjusted to 2 positions, blued steel flat balance spring, shock absorber, micrometre regulator.
Dial, case and movement signed.
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Diameter: 43 mm
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Signed: Omega