The two roads that Rotella takes on simultaneously, starting in 1953-1954 are those of decollage and retro posters. The first retro d';affiche documented date back to 1954. The retro d'affiche are displayed for the first time to the public in December 1955 at the personal exhibition the artist held at the Galleria del Naviglio in Milan. Unlike decollage where often textural layers are wrapped together and manipulated, in the back of posters the artist retains the 'urban relic'. In these works his speech tends to be subtle, the colors are often absent, the surface is gritty and raw, it has compared to decollage a more targeted research to informal language, except that it will become evident starting especially from the sixties when decollages in expected to bet influenced by the rising pop language.