Ritratto di ignoto, 1972

grey-green felt, letters painted in salmon-pink with plaque
in brass, 31 1/2 × 47 1/4 in

Assioma: l’opposizione è un riflesso gli opposti si equivalgono, 1970

engraved black bakelite painted with white
nitre varnish, 27 1/2 × 27 1/2 in