Swiss gold and enamel octagonal Art Deco watch Circa 1921

Gold and enamel Art Deco lever watch by Patek Philippe
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An octagonal Swiss 18 carat gold and enamel open faced Art Deco lever pocket watch, circa 1921. Sold on December 7th, 1921. Lever movement, 18 jewels. Gilt dial with Breguet hours and outer minute divisions, the centre guilloché, subsidiary seconds at 6 o’clock. Case engraved, decorated with black enamel, monogram H.S. on the back, snap-on back. Dial signed, case and movement signed and numbered. Comes with an associated gold and enamel knife and chain and Extract from the Archives.
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Diameter: 44.5 mm
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Signed: Patek, Philippe & Co Geneva-Switzerland