Swiss gold, platinum, diamond and sapphire ring watch Circa 1940

Oval lady’s ring watch in original box
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A charming Swiss 18K yellow gold, platinum, diamond and sapphire oval ring watch. Accompanied by the original fitted box. A solid, polished case, reeded bezel set with four round diamonds and two triangular black sapphires, square winding crown with hinged gold extension for easy winding and setting. Silver dial with painted Breguet numerals, concentric minute track and gold baton hands. An oval, rhodium-plated movement, 17 jewels, straight-line lever escapement, monometallic balance, self-compensating flat balance spring. Dial and movement signed, numbered on the case.
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Dimensions: 21 x 14 mm
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Signed: Festina  Swiss
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The hands are repaired.