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A unique late Medieval/early Renaissance volvelle astronomical calendar
By [Anonymous]., c1455]
The reasons for night and day
By [FORTIN, Jean]., 1773.
A perpetual calendar fit for a King…
By [Anonymous], 1710.
An astronomical clock depicting the Tychonic solar system
By FREY, I[gnaz], 1751.
Rare volvelle from Apian’s Astronomicum Caesareum
By APIANUS, Petrus, 1540.