1979
National Gallery of Art, 1400
National Gallery of Art, 1946
National Gallery of Art, 1937
National Gallery of Art, 1515
National Gallery of Art, 1947
National Gallery of Art, 1533
National Gallery of Art, 1963
National Gallery of Art, 1940
National Gallery of Art, 1971
National Gallery of Art, 1648
National Gallery of Art, 1936
National Gallery of Art, 1993
![Sixtus IV (Francesco della Rovere, 1414-1484), Pope 1471 [obverse]](https://api.nga.gov/iiif/3a538c6d-adea-420f-bbcc-b241c54384a3/full/843,/0/default.jpg)
![After Holbein [working proof]](https://api.nga.gov/iiif/8fc0e0d3-f7f4-4509-bbbf-04ca8c7e2aeb/full/843,/0/default.jpg)