Unusual Swiss 18K gold and bloodstone pendant watch Circa 1880

Gold cylinder watch with chain and keys
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Very fine and unusual Swiss 18k gold and bloodstone pendant watch, circa 1880. Accompanied by an 18k gold and bloodstone set chain (length 36.5 cm.) and keys.
A solid case, reeded band, hinged case back set with bloodstone ornamented by gold initials, gold cuvette. White enamel dial with radial Roman numerals, outer minute track and blued steel Breguet hands. Movement with nine jewels, cylinder escapement, plain three-arm balance, blued steel flat balance spring, and an index regulator.
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Thickness: 10 mm
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Diameter: 31 mm
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Signed: No name