Medallion, probably Margaret of Lorraine (recto); the Virgin Seated on a Throne Before Two Widows (verso) by Léonard Limosin https://www.rawpixel.com/image/9019285/photo-image-angels-person-birdFree Image from public domain licenseSinan the Jew and Haireddin Barbarossa by Imitator of Gentile Bellini https://www.rawpixel.com/image/8962829/sinan-the-jew-and-haireddin-barbarossa-imitator-gentile-belliniFree Image from public domain license