Ferrarese 15th Century · 15th century
copper//Proof for a testoon
National Gallery of Art · CC0 1.0 · Wikidata
Lindy Arts
![Ercole I d'Este, 1431-1505, 2nd Duke of Ferrara, Modena, and Reggio 1471 [obverse]](https://api.nga.gov/iiif/c2dd513b-923b-4462-b938-f0b8ae488438/full/!900,900/0/default.jpg)