"Untitled", 1979/80, mixed technique on canvas, signed on the reverse, within plexiglass frame. Work registered in the Mario Schifano fondation Rome, under the n. 79-80/273, authentic on photograph dated 20 July 2001. Bibliography: Mario Schifano opere su tela 1956 -1982, volume A) I° n.79-80/273, pag. 373