1450–1499
Duveen Brothers, Inc., 1525
National Gallery of Art, 1969
National Gallery of Art, 1754
Duveen Brothers, Inc., 1460
National Gallery of Art, 1949
Duveen Brothers, Inc., 1500
National Gallery of Art, 1852
National Gallery of Art, 1951
National Gallery of Art, 1895
National Gallery of Art, 1935
National Gallery of Art, 1912
National Gallery of Art, 1966
![Girolamo Panico, died 1558, and Pompeo Ludovisi, died 1565 [obverse]](https://api.nga.gov/iiif/1077f9f4-3c12-4757-8034-052d585611b2/full/843,/0/default.jpg)
![Unicorn Dipping Its Horn into a Stream [reverse]](https://api.nga.gov/iiif/d17d7076-05e0-4254-81da-be87f9f5c7c0/full/843,/0/default.jpg)
