Study of a Madonna [verso], Leonardo da Vinci, probably 1470/1480
Date: probably 1470/1480. Dimensions: overall: 16 x 13.5 cm (6 5/16 x 5 5/16 in.). Medium: black chalk on laid paper. Collection: National Gallery of Art. Leonardo da Vinci, Study of a Madonna (verso), probably 1470-1480, NGA 74164