Swiss gold concealed Lady’s pendant watch Circa 1980

Gold watch accompanied by a bleu braided cord
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A very fine Swiss, 18K yellow gold concealed pendant watch, circa 1980. Double case with textured decoration, accompanied by a bleu braided cord. The coin opening with a push-piece concealed in the band, a three-body hinged inner case. Blue dial with painted baton indexes. Yellow gold baton hands. A rhodium-plated movement, 21 jewels, straight-line lever escapement, monometallic balance, Blued steel self-compensating flat balance spring, shock absorber, and an index regulator. Dial, case and movement signed.
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Diameter: 39,5 mm
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Signed: Corum  Swiss