Luciano Fabro Vetro di Murano e seta indiana (Piede di vetro) (Murano Glass and Pure Silk Indiana ... 1968-1972
Robert Filliou Autoportrait bien fait, mal fait, pas fait (Self-Portrait Well Made, Badly Made, Not Made) 1973
Lorenzo Frechilla del Rey Serie forma del sonido (maqueta II) (Form of Sound Series [Maquette II]) 1971