This includes Head of an Old Man which he signed himself saying "1510 a dí 14 Augusto p.a caveat de relic Franchesco de Melzo de anti 17" which means "on the day 14 August taken from a relief by Francesco Melzi 17 years of age."[1] There is a note on the back sheet that identifies the man in this drawing as Artus Boysi.[2] This drawing is red chalk on paper, and although it highlights the artist's keen ability to render from observation, Francesco's note at the bottom leads us to believe that it was based on a relief, most likely by Leonardo.[21] It is also conjectured that he uses this same head in his Vertumnus and Pomona'.