1630–1648
Bruce Fund, Ailsa Mellon, 1645
National Gallery of Art, 1492
National Gallery of Art, 1935
National Gallery of Art, 1600
National Gallery of Art, 1472
National Gallery of Art, 1452
National Gallery of Art, 1905
National Gallery of Art, 1970
National Gallery of Art, 1936
National Gallery of Art, 1466
![Alfonso I d'Este, 1476-1534, 3rd Duke of Ferrara, Modena and Reggio 1505 [obverse]](https://api.nga.gov/iiif/3a5418d1-d299-4e5f-b999-e9add8f20570/full/843,/0/default.jpg)
![Hercules and Three Columns in the Sea [reverse]](https://api.nga.gov/iiif/d62e3667-389f-4941-831e-b47e5a637aa7/full/843,/0/default.jpg)
![Francesco I Sforza, 1401-1466, 4th Duke of Milan 1450 [obverse]](https://api.nga.gov/iiif/2969b190-b490-420f-bf2c-9d57f53a2110/full/843,/0/default.jpg)
