Swiss gold and diamonds ring watch concealed dial Circa 1960

Gold and diamonds ring watch
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A fine, 18 carat yellow gold and diamonds ring watch with concealed dial. Made by Ebel in Switzerland Circa 1960. Two body, solid and polished case with hinged cover set with 29 round diamonds.
Satine silver dial with applied yellow gold baton indexes and yellow gold and black baton hands. Rhodium-plated movement with 15 jewels, straight-line lever escapement, monometallic balance, shock absorber and a self compensating flat balance spring.
Dial, case and movement signed.
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Diameter:20 mm
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Thickness: 12 mm
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Approximate ring size:  6 ¾
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Signed: Ebel