One large brass disc and one small on either side, pivoting on center nail. Top engraved: Calendarium Perpetuum” and days of the week in German, together with their symbols. Cut-out edge adjustable to date engraved on large disc. Back disc has two cut-outs, adjustable to show holidays, month, sign of zodiac, sunrise and sundown, length of days and nights.
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Unknown artist<span style="display: none;">Unknown artist</span></div>
early 18<sup>th</sup> century <div style="display: none;">date QS:P571,+1750-00-00T00:00:00Z/7,P4241,Q40719727</div>
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