French gold miniature with splendid green enamel Circa 1850

Gold/Enamel open faced cylinder watch
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A very rare gold/enamel miniature Lepine watch, with matching gold/enamel pendant seal and gold/enamel key by Eugene Bornand & Cie St. Croix, circa 1850. A gold, splendid green enamel on back, with rose-cut diamonds, reeded mid section, bar movement and dome signed, cylinder escapement, screwed enamel dial, fine Breguet hands, very rare original set with pendant seal and key, 18 K gold and green enamel. Gold/enamel pocket/pendant watches are very rare, especially with precious accessories.
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Diameter: 23 mm
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Weight: 10 g
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Signed:  Eugene Bornand & Cie  St. Croix