GIM5037941: Two profiles of men, an old man and a young man. The young man represents Gian Giacomo Caprotti known as Andrea Salai or Salaij (around 1480-1524), Leonardo's student and lover. Chalk drawing by Leonardo da Vinci (Leonardo da Vinci) (1452-1519) Florence, Galleria degli Uffizi (Offices), Vinci, Leonardo da (1452-1519) / Bridgeman Images