Moonphase calendar pocket watch, Swiss ca. 1900

metal gilt case, the white enamel dial with Roman numerals has a set of black steel hands and subsidary dials for day of the month, month of the year, say of the week and phases of the moon. The watch is stem wound / pin set. Cylinder movement. Diameter 51 mm.
Item condition grading: **** good.
The watch seems to be in working order but may need an overhaul.