ALIGHIERO BOETTI (TURIN 1940 - ROME 1994) "City of Turin" 1968 pastel intervention on lithography 56x46 cm Signed and numbered 49/100 lower left Provenance Private collection, Bologna Bibliography J. C. Ammann "Alighiero Boetti. General Catalogue. Tomo I" Milan, Electa, 2009, p. 194, n. 185 (other examples illustrated) Work accompanied by a certificate of authenticity on photograph issued by the Alighiero Boetti Archive, Rome, with no. 10469