Dutch Perpetual Calendarium, C 1700
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A Dutch brass  Perpetual Calendarium(eeüwigdürende Almanach). Executed in brass and feature a silver binnenschijf and pendant. On the one hand, the indication of the sign of the day with the day and date with inscriptie “eeüwigdürende Almanach”. On the other hand the indicated by the month, the zodiac sign, and the number of days per month. Length of the night Sun sunset length of day Sun entrance. Diameter 5 cm and circa 1700