Danish gold open faced quarter repeating lever Circa 1848

Gold quarter repeater by Jürgensen
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One of the earliest known Jürgensen 18 carat gold open faced quarter repeating pocket watches, circa 1848. Very fine, early Jürgensen calibre, repeating hours and quarters, key winding, lever escapement, crown only for opening the case, not for setting and winding. White enamel dial with Roman numerals and blued steel hands. Plain à goutte case with reeded mid section and monogram to the back. Dome signed and numbered, case and movement numbered, dial signed.
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Diameter: 49 mm
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Weight: 88 g
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Signed: Jules Jürgensen Copenhagen