You might like Left Right Che Fare? Mario Merz 1968–73 Lingotto Mario Merz 1968 The Unknown Political Prisoner Pietro Consagra 1952 Palestrina Italo Valenti 1963 Achrome Piero Manzoni 1958 Line 4.90m, December 1959 Piero Manzoni 1959 Line 18.82m, September 1959 Piero Manzoni 1959 Fibonacci Tables Mario Merz 1974–6 Cone Mario Merz c.1967 Artist’s Shit Piero Manzoni 1961 Bronzo patinato nero e seta naturale (Piede) Luciano Fabro 1968–71 Untitled (A Real Sum is a Sum of People) Mario Merz 1972