1956
National Gallery of Art, 1962
National Gallery of Art, 1924
National Gallery of Art, 1500
National Gallery of Art, 1832
National Gallery of Art, 1752
National Gallery of Art, 1935
National Gallery of Art, 1958
National Gallery of Art, 1868
National Gallery of Art, 1890
Frank, Robert, 1952
National Gallery of Art, 1647
National Gallery of Art, 1631
![Giangaleazzo Maria Sforza, 1469-1494, 6th Duke of Milan 1476 [obverse]](https://api.nga.gov/iiif/da01db2f-21b2-48a9-adc6-9dd7a44f7e22/full/843,/0/default.jpg)
