Swiss platinum open faced keyless lever watch Circa 1940

Platinum lever pocket watch by Patek Philippe
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A Swiss platinum open faced keyless lever watch, circa 1940. Retailed by Tiffany & Co. Nickel finished lever movement, 18 carat jewels. Silvered matte dial, polished chapter ring with applied platinum Arabic and baton numerals, outer railway minute divisions, engine turned subsidiary dial for constant seconds. Polished stepped bezel, snap on case back engraved Harold W. Harwell, December 1942. Case, dial, and movement signed, dial signed by retailer. case and movement numbered.
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Diameter: 43 mm
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Signed: Tiffany & Co – Patek, Philippe & Cie Genève