Small Swiss gold open faced lever pendant watch Circa 1911

Gold keyless lever pendant watch by Patek Philippe
–
A fine and small Swiss 18 carat gold open faced keyless lever pendant watch with red Arabic 24 hour indication, circa 1911. Nickel finished lever movement, 18 jewels, bimetallic compensation balance, wolf’s tooth winding. Gold cuvette. White enamel dial with black Breguet numerals and outer red Arabic 24 hour indication. Small case, engraved coat-of-arms to the back. Case, cuvette, dial and movement signed, case and movement numbered. Comes original certificate and box.
–
Diameter: 27 mm
–
Signed: Patek, Philippe & Cie Genève