Portrait of a Humanist by Sebastiano del Piombo, M. Knoedler & Company, Ghizzi, Petty FitzMaurice, 5th Marquess of Lansdowne, Henry Charles Keith, Rudolf J. Heinemann, Agnew & Sons, Ltd., Thomas, Petty FitzMaurice, 3rd Marquess of Lansdowne, Henry, Samuel H. Kress Foundation, Petty FitzMaurice, 4th Marquess of Lansdowne, Henry — VisualArtsDB
![Giovanni de' Medici delle Bande Nere, 1498-1526, Celebrated Condottiere and Father of Cosimo I [obverse]](https://api.nga.gov/iiif/3e0257d9-b8ca-4216-a630-45397028ead5/full/843,/0/default.jpg)
![Alfonso as Infant Hercules [reverse]](https://api.nga.gov/iiif/e0fdbc13-d7e1-44f7-abb1-e617b9079f39/full/843,/0/default.jpg)
![Antonio Vinciguerra, 1468-1502, Poet, Secretary to the Republic of Venice [obverse]](https://api.nga.gov/iiif/14b8a70c-137a-4302-afdb-d810441b61ab/full/843,/0/default.jpg)
