Swiss gold watch with calendar and chronograph Circa 1890

Heavy hunting cased pocket watch
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A very fine, heavy French/Swiss 18-carat gold hunting cased chronograph pocket watch with perpetual calendar and moon phase made for the Peruvian physician Jose B. Unánue, circa 1890.
Glazed bridge movement, rhodium-plated, fausses côtes decoration, finely ground and bevelled chronograph steel parts, ratchet wheel, pink gold train, gold screwed compensation balance, counterpoised lever. Gold cuvette inscribed: J.B. Unánue. White enamel dial with radial Roman hours, auxiliary seconds, subsidiary dials for indications of the weekday, month and date in combination with the leap year, cobalt blue enamelled moon phase disc with inlaid golden moon and stars, spade hands. Case chased with enamelled monogram BJU, pusher for chronograph at 12.
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Diameter: 55 mm
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Weight: 174 g
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Signed: B. Poitevin Fabt. Paris – Genève