Head of an Old Man, Leonardo da Vinci, between 1487 and 1490

Date: between 1487 and 1490. Dimensions: height: 112 mm (4.40 in); width: 75 mm (2.95 in). Medium: paper, pen and light brown ink, watercolour. Collection: Gallerie dell'Accademia. Leonardo da Vinci - Head of an Old Man - WGA12792