Swiss 18k gold octagonal skeletonized lady’s watch Circa 1990

Gold skeletonized watch with diamond, sapphire and ruby-set 
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A very fine and elegant Swiss, thin, skeletonized, 18K gold, diamond, sapphire and ruby-set keyless, lady’s pendant watch, circa 1990. An octagonal case, set with 160 diamonds, 52 calibre set sapphires and 24 calibre set rubies, hinged rectangular bow, spherical winding crown set with cabochon rubies, both sides glazed, sapphire crystals. A skeletonized dial with black Louis XV hands. A skeletonized movement, gilt brass engraved with foliage, 20 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures,self-compensating flat balance spring, shock absorbers. Movement signed.
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Diameter: 44 mm
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Signed: Piaget  Swiss