1500
National Gallery of Art, 1999
National Gallery of Art, 1958
National Gallery of Art, 1616
National Gallery of Art, 1922
National Gallery of Art, 1940
National Gallery of Art, 1471
National Gallery of Art, 1891
National Gallery of Art, 1939
National Gallery of Art, 1937
National Gallery of Art, 1845
National Gallery of Art, 1498
![Francesco Petrarca [obverse]](https://api.nga.gov/iiif/11b96e3d-ab2d-425c-9828-08b847902a27/full/843,/0/default.jpg)
![Borso d'Este, 1413-1471, Marquess of Ferrara 150, Duke of Modena and Reggio 1452 [obverse]](https://api.nga.gov/iiif/4ab1f3e5-0aeb-447b-85c4-109d874d03ec/full/843,/0/default.jpg)
