Unusual Swiss 18K rose gold Art Deco lever watch Circa 1951

Rose gold open faced lever by Patek Philippe
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An unusual Swiss 18 carat rose gold open faced Art Deco lever pocket watch, circa 1951. Sold on 2nd July 1954. Lever movement, 18 jewels. Two-tone rose dial with raised gold hour markers, Arabic 9, 12 and 3, subsidiary seconds. Plain case, snap on back. Dial signed, case and movement signed and numbered. Comes with an Extract from the Archives confirming the production of this watch in 1951.
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Diameter: 47 mm
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Signed: Patek Philippe Genève
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This piece is a fine example of a Patek Philippe manufactured post World War II.