Pier Paolo Calzolari (Bologna 1943) "Untitled" 1970 lead, salt, colour, and clover on cardboard on wood panel 74.5x103.5x2.8 cm Signed lower right Provenance Barbara Gladstone Gallery, New York Eva Menzio, Turin Private collection, Rome This work is accompanied by a photo-certificate of authenticity issued by the artist. This work is accompanied by a photo-certificate of authenticity issued by the Pier Paolo Calzolari Foundation, no. A-CAL-1970-95