English 18K gold hunting cased complicated lever Circa 1890

Gold complicated pocket watch by Benson
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An English 18 carat gold hunting cased minute repeating perpetual calendar chronograph with moon phases and leap year indication, circa 1890. Lever movement, jewelled. White enamel dial with Roman hours and Arabic minutes, subsidiary dials for the days of the week, date, months and constant seconds combined with moon phases. Plain case. Case and dial signed, movement signed and numbered.
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Diameter: 58 mm
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Signed: J.W. Benson