| | Coin design by: | | | Thomas Pesendorfer |  |  |  | | | The reverse side of the coin has a portrait of the contemporary scholar and astronomer, Johannes Kepler (1571-1630), who spent some time teaching in Graz and the surrounding areas. Kepler was acquainted with Hans Ulrich Eggenberg personally, and most probably he knew and influenced the construction of Eggenberg Castle. Before him on the coin is a model of his “Mysterium Cosmographicum”. | | |
| Year | Circulation quality | Special Uncirculated | Proof | Frosted Proof | | 2002 | 130.000 | 20.000 | - | 50.000 | |
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