COLLECTIF, Adami, Aléchinsky, Arroyo, Lam, Matta, Recalcatti, Rotella, ... 1964-1974, 13 posters in color (minor accidents), in used publisher's boards. The original works were destroyed during a public bonfire in Paris, so these reproductions are the only witnesses to these works, Carlo Orsi edition, Milan, 1974, 101x71cm.