1991
National Gallery of Art, 1753
National Gallery of Art, 1989
National Gallery of Art, 1832
National Gallery of Art, 1837
National Gallery of Art, 1957
National Gallery of Art, 1939
National Gallery of Art, 1481
National Gallery of Art, 1916
National Gallery of Art, 1937
National Gallery of Art, 1649
National Gallery of Art, 1936
![Sixtus IV (Francesco della Rovere, 1414-1484), Pope 1471 [obverse]](https://api.nga.gov/iiif/9c4aa1a2-1070-494a-ba06-585adff1481b/full/843,/0/default.jpg)
