284/500. Edition and signature lower in pencil. Title and year lower in print. Superstudio stamp lower right. Plura Edition, Milan, dry stamp lower centre. Total edition: 500 copies. 1968-1969. The Superstudio group, founded in Florence in 1967 and made up of Adolfo Natalini, Cristiano Toraldo di Francia, Roberto Magris, Piero Frassinelli, Alessandro Magris, with Alessandro Poli from 1970 to 1972, was active until 1978 and carried out experimental research. and theoretical on design.