Studies for the Libyan Sibyl (recto); Studies for the Libyan Sibyl and a small Sketch for a Seated Figure (verso). Artist: Michelangelo Buonarroti (Italian, Caprese 1475-1564 Rome). Dimensions: Sheet: 11 3/8 x 8 7/16 in. (28.9 x 21.4 cm). Date: ca. 1