1590–1690
National Gallery of Art, 1643
National Gallery of Art, 1903
National Gallery of Art, 1731
National Gallery of Art, 1938
National Gallery of Art, 1937
National Gallery of Art, 1893
National Gallery of Art, 1887
National Gallery of Art, 1501
National Gallery of Art, 1927
Bruce Fund, Ailsa Mellon, 1590
National Gallery of Art, 1905
National Gallery of Art, 1471
![Sixtus IV (Francesco della Rovere, 1414-1484), Pope 1471 [obverse]](https://api.nga.gov/iiif/1d8dd6c3-3c15-4831-abf5-1dd959a17bad/full/843,/0/default.jpg)