The Battle of Anghiari, detail: Head of a Warrior ('The Red Head'), Leonardo da Vinci, between 1504 and 1505

Date: between 1504 and 1505. Dimensions: height: 226 mm (8.89 in); width: 186 mm (7.32 in). Medium: red chalk on brownish paper. Collection: Museum of Fine Arts, Budapest. Study of a Figure for the Battle of Anghiari