1932
National Gallery of Art, 1775
National Gallery of Art, 1937
National Gallery of Art, 1621
National Gallery of Art, 1991
National Gallery of Art, 1938
National Gallery of Art, 1995
National Gallery of Art, 1955
National Gallery of Art, 1970
National Gallery of Art, 1631
National Gallery of Art, 1769
National Gallery of Art, 1640
![Visconti Viper (bischera) [reverse]](https://api.nga.gov/iiif/e4342987-8ec2-43b7-aed8-fc5c635c5c05/full/843,/0/default.jpg)
