1938
National Gallery of Art, 1441
National Gallery of Art, 1936
National Gallery of Art, 1938
National Gallery of Art, 1804
National Gallery of Art, 1552
National Gallery of Art, 1962
National Gallery of Art, 1940
National Gallery of Art, 2003
National Gallery of Art, 1607
National Gallery of Art, 1930
National Gallery of Art, 1876
National Gallery of Art, 1702
![Leonello d'Este, 1407-1450, Marquess of Ferrara 1441 [obverse]](https://api.nga.gov/iiif/58cb7c40-e9d3-4ab3-a06f-a2f6cf5ada57/full/843,/0/default.jpg)
![Gianfrancesco Martignoni, Milanese Physician [obverse]](https://api.nga.gov/iiif/743c905b-4bba-4f88-a2c5-0782fcfff2c1/full/843,/0/default.jpg)
