1951
National Gallery of Art, 1633
National Gallery of Art, 1500
National Gallery of Art, 1960
National Gallery of Art, 1877
National Gallery of Art, 1936
National Gallery of Art, 1474
National Gallery of Art, 1937
National Gallery of Art, 1903
National Gallery of Art, 1745
National Gallery of Art, 1607
National Gallery of Art, 1509
National Gallery of Art, 1888
![Antinous on a Griffin [reverse]](https://api.nga.gov/iiif/f70816a5-2796-4922-a81e-307222ee65a2/full/843,/0/default.jpg)
![Federigo da Montefeltro, Count of Urbino [obverse]](https://api.nga.gov/iiif/22786dd6-5653-472e-8d2d-50afaefc4d43/full/843,/0/default.jpg)
