Swiss watch with two horological complications Circa 1870-1872

Gold pocket watch by Louis Audemars
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A Swiss gold open faced pocket watch by Louis Audemars for le Roy & Fils watch with two horological complications, circa 1870-1872. Gilded brass movement, with going barrel, double-train of gold wheels, straight-line equilibrated lever escapement, compensated balance and blued steel hairspring with terminal curve.
Round-shaped, pocket watch; guilloché engine-turned case back, hinged case back; and two horological complications: Dead independent seconds (exterior graduation with central hand; activated by the push-piece located on the case band at 11 o’clock), Two barrels with differential gears and bidirectional-winding inspired by Sylvain Mairet’s (1805-1890) works (1850 / 1855).
White enamel dial, Roman numerals and Arabic outer, gold spade hands. Signed cuvette.
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Diameter: 52.5 mm
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Signed: Louis Audemars
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The Leroy Extract from the Archives, dated September 2018, mentioned that this watch was sold on December 28, 1872, to Madame de Cambolas, de Castelnau d’Estrétefonds (Haute-Garonne), at Monsieur de Puylaroque in the Hôtel des Missions Etrangères, Paris, for the amount of 1 300 Francs.

Dented cover.