Raphael An Allegory (The Dream of a Knight) or The Dream of Scipio, 1504 Oil on poplar wood, 17.1 × 17.1 cm National Gallery, London https://commons.wikimedia.org/wiki/File:RAFAEL_-_Sue%C3%B1o_del_Caballero_(National_Gallery_de_Londres,_1504._%C3%93leo_sobre_tabla,_17_x_17_cm).jpg