St. Jerome (recto); Kneeling Male Nude, with His Head and Shoulders Leaning Back (verso) by Juan del Castillo https://www.rawpixel.com/image/14246252/image-cartoon-face-handFree Image from public domain licenseThe Head of Marcus Shown to Caius Marius and the Killing of Marius by Boucicaut Master https://www.rawpixel.com/image/14260541/image-paper-hand-personFree Image from public domain license