"Study for the drapery of the Erythraean Sibyl, se

"Study for the drapery of the Erythraean Sibyl, seated to r with legs crossed. 1508-12 Brown wash and pen and dark brown ink over a black chalk under-drawing Verso: study of a sibyl seated to r with legs crossed, looking down; an scheme for the decoration of the ceiling of the Sistine Chapel; and a l hand Grey-brown and black chalk over incised lines (the sibyl); grey-brown chalk (the scheme); black chalk over incised lines (the hand) The r. lower corner made up; several patches in the top r. corner, the largest in the middle of the hand on the verso"