1622
National Gallery of Art, 1936
National Gallery of Art, 1969
National Gallery of Art, 1657
National Gallery of Art, 1919
National Gallery of Art, 1935
National Gallery of Art, 1498
National Gallery of Art, 1907
National Gallery of Art, 1937
National Gallery of Art, 1938
National Gallery of Art, 1601
National Gallery of Art, 1620
National Gallery of Art, 1663
![Untitled (Ruler) [trial proof]](https://api.nga.gov/iiif/d5c3a268-ebb5-4d3b-85ae-60ad4466e3ba/full/843,/0/default.jpg)
![The Scala Regia at the Vatican [reverse]](https://api.nga.gov/iiif/bfeb8a13-a240-4ee0-940a-6bc47454552c/full/843,/0/default.jpg)