Swiss 18 carat yellow gold Art Deco dress watch Circa 1920

Gold open faced lever dress watch 
–
A very fine and elegant Swiss, thin, keyless, 18K yellow gold Art Deco dress watch, circa 1920. A solid, polished case. Satiné silver dial, applied yellow gold Roman numerals and indexes, outer minute divisions, guilloché subsidiary seconds dial. Yellow gold baton hands. A nickel movement, Geneva striping decoration, 18 jewels, straight-line counterpoised lever escapement, cut bimetallic compensation balance adjusted to eight positions, blued steel Breguet balance spring, swan-neck micrometre regulator. Dial, case and movement signed.
–
Diameter: 45 mm
–
Signed: Patek, Philippe & Cie  Genève