1635
National Gallery of Art, 1973
National Gallery of Art, 1936
National Gallery of Art, 1919
National Gallery of Art, 1951
National Gallery of Art, 1609
National Gallery of Art, 1885
National Gallery of Art, 1909
National Gallery of Art, 1972
National Gallery of Art, 1938
National Gallery of Art, 1966
National Gallery of Art, 1879
![Monkey Contemplating a Human Skull in a Landscape [reverse]](https://api.nga.gov/iiif/20e1c0d0-4eea-46d6-84d9-0e7b94fd0408/full/843,/0/default.jpg)
