Giorgio Ghisi after Michelangelo, ‘The Delphic Sibyl’, early 1570s, National Gallery of Art, Washington, D.C.
plate: 55.5 x 43 cm (21 7/8 x 16 15/16 in.)  sheet: 59.2 x 44.5 cm (23 5/16 x 17 1/2 in.)