Swiss 18 carat gold US twenty dollars coin watch Circa 1962

Gold coin watch by Patek Philippe
–
A fine, rare Swiss 18 carat gold United States of America twenty dollars coin watch, circa 1962. Retailed by Koch. Mechanical movement, 18 jewels. Champagne coloured dial with Arabic and baton numerals. Case with snap on back, all hinged within the 18 carat gold United States of America twenty dollars coin with Lady Liberty to the cover dated 1924, American bald eagle to the reverse with In God We Trust motto below, hinged cover opened by depressing a concealed thumbpiece in the band, with raised motto E Pluribus Unum and stars. Case, dial and movement signed by watchmaker, dial further signed by retailer.
–
Diameter: 34 mm
–
Signed: Patek Philippe Genève – Koch