Swiss 18k gold astronomic huntig cased watch Circa 1868

Gold watch with perpetual calendar and moon phase 
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A very fine and extremely early, rare Swiss, 18K gold keyless, astronomic, hunting cased pocket watch, circa 1868. With perpetual calendar and moon phases. Accompanied by the Extract from the Archives. Sold on July 12, 1878. Engine turned and polished, reeded band. Hinged gold cuvette.

White enamel dial with radial Roman numerals, outer minute track, subsidiary dials for the months, the seconds and days of the week and the date, aperture for the moon phases. Blued steel Spade hands. Frosted movement, gilt bar calibre, 17 jewels, wolf’s tooth winding, counterpoised straight line lever escapement, cut bimetallic compensation balance with gold temperature and meantime adjustment screws, blued steel Breguet balance spring, index regulator. Case and cuvette signed, movement mumbered on the frontplate.
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Diameter: 53 mm
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Signed: Patek Philippe & Co.  Genève
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The present watch is amongst a group of watches of early perpetual calendar watches made around the time of the 1867 Paris World Exhibition. The dial layout is unusual and distinctive and it is unusual to find a Patek Philippe pocket watch with perpetual calendar and moon phases only.