1998
National Gallery of Art, 1550
National Gallery of Art, 1955
National Gallery of Art, 1924
National Gallery of Art, 1843
National Gallery of Art, 1861
National Gallery of Art, 1913
National Gallery of Art, 1699
National Gallery of Art, 1943
National Gallery of Art, 1455
National Gallery of Art, 1655
National Gallery of Art, 1938
National Gallery of Art, 1900
![Sky and Mirror [working proof 1]](https://api.nga.gov/iiif/ce2b2c6f-7b19-4451-9e3e-d252eabeff52/full/843,/0/default.jpg)
![Bartolommeo Colleone of Bergamo, 1400-1475, Condottiere [obverse]](https://api.nga.gov/iiif/a0171748-620c-4cb7-a812-168a1ed3f1f4/full/843,/0/default.jpg)
