ALIGHIERO BOETTI (Turin 1940 - Rome 1994) Hearing Between Words (Nine Squares) 1979 watercolour on handmade paper 19x19 cm signed and numbered example 37/40 signed and numbered upper side edited by Plura Milano This work is accompanied by a photo-certificate of authenticity released by Archivio Alighiero Boetti, Rome and registered with n. 10594. Provenance Galleria de' Foscherari, Bologna Private collection Literature J.C. Ammann, Alighiero Boetti, Catalogo generale , Milan, 2012, vol. II, pp. 364-365, no. 1160 (other items listed)