One of the curious objects of the collection is this Tamil charm with a magic square that is not dated. The copper plate carries a magic square in Tamil characters where the letters are equivalent to numbers.
We can also find these Italian engraved discs from the 17th or 18th century:
Although the purposes of these brass discs is not fully known, the were probably magical. [The left one] is engraved with a solar calendar, the signs of the zodiac, and the names of the angels supposed to govern them. [The other disc] has a representation of the Aristotelian cosmos.
And this is the Monument to Mathematics:
This alabaster sculpture illustrates the regular polyhedra and it was presented to the Bodleian Library in 1620 by Sir Clement Edmonds, Fellow of All Souls: