1973
National Gallery of Art, 1931
National Gallery of Art, 1800
National Gallery of Art, 1620
National Gallery of Art, 1936
National Gallery of Art, 1861
National Gallery of Art, 1754
National Gallery of Art, 1929
National Gallery of Art, 1984
National Gallery of Art, 1983
National Gallery of Art, 1855
![La fragile conchiglia [The Fragile Shell]](https://api.nga.gov/iiif/7b70accf-0754-4947-9e27-00b4d14af625/full/843,/0/default.jpg)
