Swiss 18K gold minute repeating lever pocket watch Circa 1911

Gold watch with perpetual calendar and moon phases 
–
A very fine and extremely rare Swiss 18K yellow gold minute repeating keyless pocket watch, circa 1911. With a perpetual calendar, phases and age of the moon. A massive, polished case and a hinged gold cuvette. White enamel dial with Arabic numerals, sunk subsidiary dials for the day of the week, the months of the leap year cycle, the date and the seconds with inner moon phase aperture with the age of the moon and pink gold spade hands. Rhodium-plated movement, Geneva striping decoration, 31 jewels, straight-line lever escapement, cut bimetallic compensation balance, Blue steel Breguet balance-sping, swan-neck micro-metric regulator. Dial, case, cuvette and movement signed.
–
Diameter: 49 mm
–
Signed: Vacheron & Constantin  Genève