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History of Science Museum

Perpetual Calendar Coin

Inventory Number 19209


Acknowledgement: © History of Science Museum, University of Oxford, inv.19209

Item type
Object
Primary inscriptions
Calendarium / Perpetuum
Physical material
metal
Paper
Object type
Calendar coin
Dimensions
Diameter: 46mm Weight: 0.05kg
Inventory No
19209

Description

Metal disc calendar 1728-1925. Contains three circular card discs inscribed with (German?) handwriting to both sides of each. Container opens by lightly twisting the sides.