Milan: Giampaolo Prearo Editore and Galleria Toselli, (1973). First edition. Baldessari's third artists' book includes 15 loose leaves (consisting of 13 color photographic plates, along with title and colophon sheets) contained in a 24.5 x 32.5 cm paper portfolio with a little window cut-out. Fine.
While normal copies contain 12 plates, each depicting three balls, this copy has a bonus 13th photographic plate depicting four balls. Item #32940