Swiss gold double faced pocket watch with two time zone Circa 1860

Double faced pocket watch with open face attributable to Louis Audemars
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A Swiss, keyless winding, gold double faced pocket watch with two time zones, circa 1860. Made for the Spanish or South American market.
Round shaped 18 Carat yellow gold case with fluted case band. Two dials: front side – enamel eccentric with Roman radial hours, outer minutes track, subsidiary dial for the seconds, and spade hands; reverse side – silvered, skeletonized, florally engraved with applied gold ornaments, inlaid radial Roman hours, and spade hands. Nickel plated movement with going barrel, gold train of wheels, straight line lever escapement, cut bi metallic balance, and blued steel flat hairspring.
This watch has one horological complication: – Hours and minutes of a second meridian (concentric hands; time setting by push pin on the left side of the pendant).
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Diameter: 48.5 mm
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Signed: No name
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This watch was presented at auction 40 years ago, in the Spring of 1979, at the first sale ever organized by Antiquorum in Hong Kong, by its founder Mr. Osvaldo Patrizzi. Provenance Antiquorum, Hong Kong, auction, May 28, 1979, lot 73. The quality of execution of this timepiece and its serial number and similar models allow us to attribute it to the Louis Audemars House from Le Brassus, Vallée de Joux. However, it should be noted that the production sheets of watch No. 8 644 are unfortunately no longer present in the Historical Archives of the Louis Audemars House, now kept by Mr. Paul Audemars in England.