1998
National Gallery of Art, 1863
National Gallery of Art, 1961
National Gallery of Art, 1960
National Gallery of Art, 1936
National Gallery of Art, 1468
National Gallery of Art, 1862
National Gallery of Art, 1799
National Gallery of Art, 1947
National Gallery of Art, 1938
National Gallery of Art, 1852
National Gallery of Art, 1911
National Gallery of Art, 1645
![Cairn 4 [working proof 1]](https://api.nga.gov/iiif/d9653f54-e0c6-4c5e-aa08-9089276325b2/full/843,/0/default.jpg)
![Federigo da Montefeltro, 1422-1482, Count of Urbino 1444, and Duke 1474 [obverse]](https://api.nga.gov/iiif/8f5d8b5e-83a1-49bc-93af-6899860656a8/full/843,/0/default.jpg)
