Swiss 18K gold twenty dollar coin pendant watch Circa 1950

Gold coin pendant watch
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A very fine Swiss 18 carat gold $20 U.S. coin dated 1904 with concealed watch, circa 1950. Rhodium plated, ¾ plate movement, Geneva striping decoration, 17 jewels, straight line lever escapement, monometallic balance, self-compensating flat balance spring.
A champagne coloured dial with painted hour indexes and black baton hands. Double cased, the coin opening with a push piece in the band, a three body hinged inner case. Dial signed, movement signed Eska.
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Thickness: 5 mm
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Diameter: 41 mm
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Signed: Solvil et Titus Swiss