Swiss stainless steel lever with center seconds Circa 1929

Open faced center seconds lever by Patek Philippe
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A rare Swiss stainless steel open faced keyless lever pocket watch with center seconds, circa 1929. Nickel finished lever movement stamped twice with the Geneva seal, wolf’s tooth winding. Two-tone silvered sector dial with  Arabic and baton numerals, center seconds. Plain case, snap on back. Case, dial and movement signed.
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Diameter: 47 mm
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Signed: Patek, Philippe & Cie Genève