Roberto Crippa (Monza 1921 - Bresso 1972) "Untitled" 1971 mixed technique, cork and collage on board 73x60 cm Signed and dated 71 on the reverse Provenance Centro d'Arte di Via Bonaventura Cavalieri 6, Milan Private collection, Milan This work is accompanied by a photo-certificate of authenticity issued by the Archivio Opere Roberto Crippa, edited by Gimmi Stefanini, Milan, under no. 1551