BRUNO MUNARI Negative - Positive 1965 acrylics on canvas cm. 100x100 signature date and title on the back good condition authentication of the son Alberto Munari on photo "Bruno Munari Artist at 360 degrees" curated by Riccardo Zelatore Monumental Complex of Santa Caterina, Finale Ligure January / March 2019 with relative publication in the catalog on p. 21