1499
National Gallery of Art, 1955
National Gallery of Art, 1997
National Gallery of Art, 1981
National Gallery of Art, 1937
National Gallery of Art, 1540
National Gallery of Art, 1936
National Gallery of Art, 1612
National Gallery of Art, 1938
National Gallery of Art, 1767
National Gallery of Art, 1521
National Gallery of Art, 1967
![Marsilio Ficino, 1433-1499, Florentine Humanist [obverse]](https://api.nga.gov/iiif/9fe8deb0-d414-4a85-9575-5070b7db0024/full/843,/0/default.jpg)
![Untitled [figure leaning head in hand]](https://api.nga.gov/iiif/05424206-b12d-4cdd-b1eb-2d15d05e67ad/full/843,/0/default.jpg)
![Charles V, 1500-1558, King of Spain 1516-1556, Holy Roman Emperor 1519 [obverse]](https://api.nga.gov/iiif/d336a8e1-7744-48c7-b386-a44ab9b64359/full/843,/0/default.jpg)
