Swiss 18k gold and enamel open faced lever watch Circa 1922

Open faced lever dress watch by Patek Philippe
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A fine Swiss 18 carat gold and enamel open faced lever dress watch, circa 1922. Gilt finished jewelled lever movement. Gilt dial with Breguet numerals, blued steel moon hands and subsidiary seconds. Both bezels, band and bow with engraved foliate motifs, blue, black and white champlevé enamel inserts to the bezels and bow, blue enamel monogram AS to the hinged case back. Case, dial and movement signed, case and movement numbered.
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Diameter: 45 mm
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Signed: Patek, Philippe & Cie Genève