1941
National Gallery of Art, 1936
National Gallery of Art, 1937
National Gallery of Art, 1791
National Gallery of Art, 1550
National Gallery of Art, 1935
National Gallery of Art, 1453
National Gallery of Art, 1545
National Gallery of Art, 1450
National Gallery of Art, 1575
National Gallery of Art, 1808
National Gallery of Art, 1759
![Gregory XIII (Ugo Buoncompagni, 1502-1585), Pope 1572 [obverse]](https://api.nga.gov/iiif/c978870c-e444-4f1e-8eb1-748758ad2abd/full/843,/0/default.jpg)
