Weiblicher Rückenakt, Strümpfe anziehend (Female Nude Pulling up Stockings, Back View)

Egon Schiele (1890-1918) Weiblicher Rückenakt, Strümpfe anziehend (Female Nude Pulling up Stockings, Back View) signed and dated 'EGON SCHIELE 1918' (lower right) black crayon and pencil on paper, probably coloured by another hand 17? x 12 in. (45.4 x 30.5 cm.) Executed in 1918