1402–1413
National Gallery of Art, 1937
Dreyfus, Gustave, 1490
National Gallery of Art, 1922
National Gallery of Art, 1939
Duveen Brothers, Inc., 1561
National Gallery of Art, 1850
National Gallery of Art, 1944
National Gallery of Art, 1938
National Gallery of Art, 1952
Duveen Brothers, Inc., 1470
National Gallery of Art, 1624
National Gallery of Art, 1896
![Constantine the Great, Roman Emperor 307-337 [obverse]](https://api.nga.gov/iiif/bb58434d-30c7-4b82-bcfc-6ec72c577644/full/843,/0/default.jpg)
![Venus and Mars [reverse]](https://api.nga.gov/iiif/257a50f7-f83b-4616-be7f-9c0b5f376424/full/843,/0/default.jpg)
![Nicola Vicentino, 1511-c. 1576, Composer and Musical Theorist [obverse]](https://api.nga.gov/iiif/7c170f2e-3479-4bf1-aa4b-5b6f504cea70/full/843,/0/default.jpg)
![Paar Helene und Simon (Helene and Simon) [p. 33]](https://api.nga.gov/iiif/83440fd1-783d-4aa6-b394-186af10bda71/full/843,/0/default.jpg)
