Swiss 18k gold and enamel octagonal lever watch Circa 1916

Open faced octagonal lever watch by Patek Philippe
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A fine Swiss 18 carat gold and enamel octagonal open faced keyless lever watch, circa 1916. Keyless lever movement, 18 jewels. Gold dial with Breguet numerals and subsidiary seconds. Thin octagonal case, dark blue champlevé enamel bezels and bow with floral motifs, engraved band, snap on case back with raised central octagonal cartouche and enamel initials IK. Case, dial and movement signed.
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Diameter: 46 mm
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Signed: Patek Philippe & Co Geneva-Switzerland