Swiss lever by Patek Philippe in gold open case Circa 1920

Gold dress watch by Patek Philippe
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A slim Swiss lever by Patek Philippe in a gold open-faced case, circa 1920. Keyless damascened nickelled bar movement with going barrel. Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Club foot lever escapement. Signed gilt metal dial with subsidiary seconds, Arabic numerals, and blue steel hands. Slim plain 18-carat open face case, single hinged back with Patek Philippe maker’s mark and simple dedication.
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Diameter: 44 mm
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Signed: Made for Tiffany & Co by Patek Philippe & Co Switzerland 18 Jewels 8 Adjustments