A very early 18 Carat gold Swiss anker chronometer Circa 1858

Pocket watch with engine turned back lid
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A very early 18 Carat gold numbered anker chronometer delivered to Van Caulaert & Fils Bruxelles and made by Patek Philippe in Genève, Switzerland, circa 1858. The open faced case is numbered, is crafted from 18 Carat gold, has the name of the owner ‘Emile Wambacq’ engraved and has an engine turned back lid. The white enamel dial has an outer ring with Roman numerals for the hours, a subsidiary seconds dial at six o’clock and black hands. This watch has a very fine and early fire gilt bridge movement, an anker chronometer, a large bimetallic screwed balance, a blued hairspring, a fine adjusting device, a balanced lever escapement, Wolf’s toothing, blued steel screws and a very early version of crown winding.
The cuvette is numbered, signed and engraved with “Van Caulaert & Fils à Bruxelles”.
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Diameter: 46 mm
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Weight: 70 g
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Signed: Patek, Philippe & C^o, à Genève