Big open face pocket watch with complete calendar including moon phase, Switzerland around 1900, gun metal case, at the sides correction pusher, snap on bezel, enamel dial hairlines with Roman numerals, Arabic minute numbers, sub-dials for month, day, date, moon phase & second, blued steel hands at sub- dials, gilded hands, silvered bar construction lever movement, compensation-balance, blued Breguet-hairspring, diameter approx. 79 mm, overhaul recommended at buyer's expense, correction for moon phase & date has to be repaired, condition 2-3

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