1910
National Gallery of Art, 1943
National Gallery of Art, 1945
National Gallery of Art, 1562
National Gallery of Art, 1961
National Gallery of Art, 1894
National Gallery of Art, 1935
National Gallery of Art, 1939
National Gallery of Art, 1648
National Gallery of Art, 1879
National Gallery of Art, 1510
National Gallery of Art, 1954
National Gallery of Art, 1963
![Giambattista Castaldi, 1493-after 1565, Count of Piadena and Cassano [obverse]](https://api.nga.gov/iiif/e203a0fb-bf8c-4544-a219-bc0bd6862f41/full/843,/0/default.jpg)
![Circles and Numbers; Self-Portrait [recto]](https://api.nga.gov/iiif/cc141604-f4fa-40f6-b587-a89a6c23f739/full/843,/0/default.jpg)
