Swiss gold and enamel keyless lever dress watch Circa 1938

Open faced lever dress watch by Patek Philippe
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A fine Swiss 18 carat gold and enamel open faced keyless lever dress watch, circa 1938. Nickel finished lever movement stamped twice with the Geneva seal, 18 jewels. Gold cuvette inscribed Robert Bruphacker Jr. Silvered dial with applied gold Breguet numerals, gold moon style hands and subsidiary seconds. Bezels, chased band and bow enhanced with black champlevé enamel, black enamel monogram ERB to the snap on case back. Case, dial and movement signed, Case and movement numbered.
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Diameter: 46 mm
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Signed: Patek, Philippe & Cie Genève Swiss