1932
National Gallery of Art, 1937
National Gallery of Art, 1915
National Gallery of Art, 1600
National Gallery of Art, 1770
National Gallery of Art, 1890
National Gallery of Art, 1647
National Gallery of Art, 1859
National Gallery of Art, 1516
National Gallery of Art, 1575
National Gallery of Art, 1800
National Gallery of Art, 1930
![Gregory XIII (Ugo Buoncompagni, 1502-1585), Pope 1572 [obverse]](https://api.nga.gov/iiif/c978870c-e444-4f1e-8eb1-748758ad2abd/full/843,/0/default.jpg)
