Giorgio GRIFFA (Torino 1936-03-28) Linee orizzontali 1973 acrylic on canvas cm 60x214 Certificate issued by the Archivio Griffa, under no. 73-017, signed by the artist K. Wolbert, L. M. Barbero, M. Meneguzzo "Giorgio Griffa", Silvana Editoriale, Galleria Fumagalli, Milano 2005, p. 202, ill. I.Quaroni, "Giorgio Griffa - esonerare il mondo", Galleria, ABC Arte, Genova, 2015, pp.56-57 Signed, dated "Giorgio Griffa, 1973" (on the reverse) ABC Arte, Genova, 2015