Swiss gold, enamel and diamond set lever dress watch Circa 1980

Gold keyless watch with polychrome enamel scene 
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A fine and rare Swiss 18 carat gold, enamel and diamond set open faced keyless dress watch made by Audemars Piguet in Geneva, circa 1980. The keyless, jewelled movement with a lever escapement. Gilt dial with Roman hours, an outer minute track with Arabic five minute numerals and blued moon hands. The case with a rope twist band and a polychrome enamel scene on the back of a clipper in full sail, signed by Ni. Gi. Barna, within a diamond set ring. Case, dial and movement signed, bezel numbered.
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Diameter: 47 mm
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Signed: Audemars Piguet Swiss
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The present watch is one of a small series of unique enamelled watches by the artist Ni. Gi. Barna made for Audemars Piguet in the early 1980s.