Drawing of Ideal Man
From the Super Mario Wiki
The Drawing of Ideal Man is an item in the SNES release of Mario's Time Machine. It is a picture drawn by Leonardo da Vinci featuring the Vitruvian Man, representing someone with a geometrically ideal body. The drawing is given to Mario by an old man, who enjoys the works of Leonardo and Michelangelo Buonarroti immensely. After the old man receives the Drawing of Air Screw (another drawing from Leonardo), he gives Mario the Drawing of Ideal Man as thanks. As one of Verrocchio's apprentices had previously been unable to recall Leonardo's name and asked for a piece of work to jog his memory, Mario can give the Drawing of Ideal Man to him. The apprentice immediately recognizes the artist, and informs Mario that the Drawing of Ideal Man and the Notebook in Mario's possession both belong to Leonardo. He then keeps the drawing to himself and tells Mario to return the Notebook to Leonardo as soon as possible.