MUNARI, BRUNO Negative - Positive acrylics on masonite 1959 signature and date on the back cm. 40x40 good conditions authentication of the son Alberto Munari on photo Arte Struktura Milano - label on the back private collection "Bruno Munari Artist at 360 degrees" Monumental Complex of Santa Caterina, Finale Ligure January / March 2019 with relative publication in the catalog on p. 19