Swiss 18 carat gold US twenty dollar coin watch Circa 1970

Gold watch with lever escapement
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A Swiss 18K gold Twenty Dollar coin dated 1908 with a concealed keyless watch, circa 1970. Double case, coin opening with a push-piece concealed in the band, three-body hinged inner case. Matte silver dial with Arabic numerals, outer minute track and black baton hands. A rhodium-plated movement, Geneva striping decoration, 17 jewels, straight-line lever escapement, monometallic balance adjusted to five positions, self-compensating flat balance spring. Dial signed Corum, movement signed Bue che-Girod.
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Diameter: 34 mm
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Signed: Bueche-Girod  Swiss