Patek Philippe. A fine and rare 18K gold United States of America Twenty Dollars Coin watch

Patek Philippe. A fine and rare 18K gold United States of America Twenty Dollars Coin watch
Signed Patek Philippe & Cie., Geneve, No. 813702, circa 1928
With nickel-finished lever movement, 18 jewels, the gilt matte dial with Breguet numerals, blued steel spade hands, the circular case with snap on back, all concealed within a hinged 18K gold United States of America Twenty Dollars coin (No. 606988), with the head of Lady Liberty to the cover and dated 1898, the bald eagle to the reverse, case and coin numbered, dial signed, movement signed and numbered
35 mm. diam.