Fine French 18k gold skeletonized keyless dress watch Circa 1980

Gold pocket watch with oblong-link chain
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A very fine, thin French, 18K yellow gold, skeletonized, keyless dress watch with a yellow gold oblong-link chain, circa 1980. Polished bezels, coin-edge band, winding crown set with a black onyx cabochon, glazed back. Brushed silver dial, annular, radial painted black Roman numerals. Blued steel Breguet hands. Skeletonized movement, hand-engraved on both sides with flowers and scrolls, 18 jewels, straight-line lever escapement, monometallic balance, self-compensating blues steel Breguet balance spring, escape and balance wheels with shock absorbers, index regulator. Dial and case signed.
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Diameter: 50 mm
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Signed: Breguet  Paris