Danish watch with double wheel duplex escapement Circa 1840

Gold open faced pocket watch by Carl Jensen
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A fine extraordinary Danish gentleman’s pocket watch with double wheel duplex escapement, circa 1840.
18 carat gold, engine turned, lavishly florally engraved case with engraved, engine turned, enamelled and signed gold dome. Signed enamel dial with radial Roman numerals, auxiliary seconds and blued Breguet hands. Bridge movement, keywind, frosted, gilt, with brass duplex double wheel, gold screw compensation balance and blued balance spring.
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Diameter: 52 mm
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Weight: 102 g
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Signed: Carl Jensen, Kiobenhavn