1471
Samuel H. Kress Foundation, 1545
Samuel H. Kress Foundation, 1519
Inc. Duveen Brothers, 1402
Inc. Duveen Brothers, 1890
Samuel H. Kress Foundation, 1500
Samuel H. Kress Foundation, 1550
Inc. Duveen Brothers, 1508
Samuel H. Kress Foundation, 1714
Samuel H. Kress Foundation, 1480
Inc. Duveen Brothers, 1578
Samuel H. Kress Foundation, 1600
![Sixtus IV (Francesco della Rovere, 1414-1484), Pope 1471 [obverse]](https://api.nga.gov/iiif/1d8dd6c3-3c15-4831-abf5-1dd959a17bad/full/843,/0/default.jpg)
![The Altar of Faith on Mount Olympus [reverse]](https://api.nga.gov/iiif/d4a52e25-9986-4547-bd48-2e4060083eb9/full/843,/0/default.jpg)
![Heraclius I in a Car Drawn by Three Horses [reverse]](https://api.nga.gov/iiif/beefb0e9-d9b1-4b32-8bd7-9be71f67b368/full/843,/0/default.jpg)
![Self-Portrait [obverse]](https://api.nga.gov/iiif/c03aaa45-ba07-4e05-ba99-b9e9dab4eba6/full/843,/0/default.jpg)
![Olive Branch [reverse]](https://api.nga.gov/iiif/e62221af-d342-45b4-9fa6-93d066b7e204/full/843,/0/default.jpg)
