German silver lever with double sided calendar Circa 1890

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A German lever with double sided calendar in a silver case, circa 1890. Key less gilt bar movement with going barrel. Plain cock with polished steel regulator. Compensation balance with overcoil hairspring, club foot lever escapement. Signed white enamel dial with subsidiary seconds and Roman numerals, blue steel hands. The phase of the moon is indicated through an aperture in the center of the dial on a blue steel and gold disc. Further calendar indications are on the other side of the watch under a sprung hunter cover. The days of the week and date shown by a single blue steel hand and the month in a rectangular aperture. The number of the days in each month are also given and the outer silvered ring indicating the day can be rotated by a thumb wheel to align the correct day with the date. The date is changed automatically by a pawl on the movement. Plain double sided silver case the calendar side under glass and sprung silverback with applied gold decoration.
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Diameter: 54 mm
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Signed: J. Verhagen und Co Koeln Calendrier Brevete German Manufactury

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See Pocket Watches by Reinhard Meis, page 266 for a similar watch.