Sheet of Studies [recto], Leonardo da Vinci, probably 1470/1480

Object Type: drawing. Date: probably 1470/1480. Dimensions: height: 16.40 mm (0.64 in); width: 13.90 mm (0.54 in). Medium: black chalk on laid paper, pen and brown ink over black chalk. Collection: National Gallery of Art. Leonardo da Vinci - Sheet of Studies (recto) - Google Art Project