1755
National Gallery of Art, 1779
National Gallery of Art, 1923
National Gallery of Art, 1935
National Gallery of Art, 1570
National Gallery of Art, 1938
National Gallery of Art, 1887
National Gallery of Art, 1652
National Gallery of Art, 1459
National Gallery of Art, 1928
National Gallery of Art, 1931
![Francesco I Sforza, 1401-1466, 4th Duke of Milan 1450 [obverse]](https://api.nga.gov/iiif/6aa7524d-35df-4d1d-a24b-9e8f959e9e8b/full/843,/0/default.jpg)
