1976
National Gallery of Art, 1925
National Gallery of Art, 1899
National Gallery of Art, 1961
National Gallery of Art, 1612
National Gallery of Art, 1919
National Gallery of Art, 1809
National Gallery of Art, 1719
National Gallery of Art, 1922
National Gallery of Art, 1893
National Gallery of Art, 1902
National Gallery of Art, 1818
National Gallery of Art, 1892
![#6 (after 'Untitled 1975') [progressive proof 5]](https://api.nga.gov/iiif/6efaa3de-f319-42dc-a4e5-549d82fc0137/full/843,/0/default.jpg)
![Mechtild von Seedorf and Anna Seiler [obverse]](https://api.nga.gov/iiif/5dae363c-1c43-4768-a97b-b42d46c006e5/full/843,/0/default.jpg)
