Swiss lever perpetuel calendar with moon phase Circa 1920

Rare gold and platinum comlicated dress watch by Gübelin
–
A rare Swiss 18 carat gold and platinum open faced perpetuel calendar keyless lever dress watch with moon phase, circa 1920. Nickel finished lever movement, 19 jewels, bimetallic compensation balance. Silvered dial with Arabic numerals, outer calibrated minute track, four subsidiary dials for day, date and month combined with leap year indication, subsidiary seconds combined with phases of the moon. Square shaped case, polished bezel, snap on back with blue enamel inscription reading Louis J Kolb. Dial and movement signed, case and movement numbered.
–
Width: 40.5 mm
–
Signed: E. Gübelin Lucerne Swiss