1519
Duveen Brothers, Inc., 1484
National Gallery of Art, 1990
National Gallery of Art, 1937
National Gallery of Art, 1510
National Gallery of Art, 1724
National Gallery of Art, 1818
National Gallery of Art, 1884
National Gallery of Art, 1642
National Gallery of Art, 1939
Kress Foundation, Samuel H., 1550
![Neptune Seated on a Dolphin [reverse]](https://api.nga.gov/iiif/853c5865-5fa9-4330-b2de-749c7338dbae/full/843,/0/default.jpg)
![Francesco II Gonzaga, 1466-1519, 4th Marquess of Mantua 1484 [obverse]](https://api.nga.gov/iiif/7ed95b36-db5f-44e1-8424-da49becb0f75/full/843,/0/default.jpg)
![Breton Boy Tending Geese; Cows and a Figure Leaning on a Ledge [verso]](https://api.nga.gov/iiif/60998854-25f7-4543-bfdc-3bfac6957834/full/843,/0/default.jpg)
![Ippolita di Ferdinando Gonzaga, 1535-1563 [obverse]](https://api.nga.gov/iiif/35ed6a02-0ec9-40e4-b1a8-bfffb3d5fd26/full/843,/0/default.jpg)
