1537
National Gallery of Art, 1941
National Gallery of Art, 1911
National Gallery of Art, 1558
National Gallery of Art, 1936
National Gallery of Art, 1884
National Gallery of Art, 1500
National Gallery of Art, 1642
National Gallery of Art, 1645
National Gallery of Art, 1570
National Gallery of Art, 1623
National Gallery of Art, 1939
National Gallery of Art, 1958
![Cosimo I de' Medici, 1519-1574, Duke of Florence 1537 [obverse]](https://api.nga.gov/iiif/2b87dffe-1a22-4e19-93cb-5c8c99086a37/full/843,/0/default.jpg)
![Frau und männlicher Hinterkopf (Woman and the Back of a Man's Head) [p. 43]](https://api.nga.gov/iiif/f95e00e7-5fc0-421a-8608-8b485691b7e4/full/843,/0/default.jpg)
