Catalog
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| Issuer | San Marino |
|---|---|
| Year | 2006 |
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| Composition | Gold (.900) |
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| Reverse description | An aerial plan view of a Renaissance star fort occupies the center of the reverse, with a mounted knight depicted within the fortification's interior. To the left of the design, the denomination 20 EURO is inscribed above the legend GIOVAN BATTISTA BELLUZZI ARCHITETTO MILITARE. Below, the commemorative date span 1506 · 2006 and the year of issue 2006 are inscribed, accompanied by the Rome Mint mark R and the engraver's signature VEROI. |
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| Mintage | 2006 R - Proof - 4,500 |
| Additional information |
Belluzzi was a sixteenth-century military architect from San Marino who became one of the most influential fortification engineers of his day, working under Cosimo I de' Medici and contributing to defensive works across Tuscany. His 1598 treatise Nuova inventione di fabricar fortezze circulated in manuscript for decades before publication, making his ideas influential long before they were formally printed.
San Marino's gold commemorative program has consistently honored figures with a credible national connection, however slender — Belluzzi qualifies by birth.