Etching on zinc from 1976 signed lower right in pencil by the Artist. Edition 66 + XVI p.a . Numbered 37/66. Dry stamp Art graphics Lombardi, Rome. Paper size 50 x 70 cm. Image size 32 x 49 cm. References Piero Dorazio, L'Opera Incisa (1962 - 1993), Edizioni Pananti, Florence, page 115. Certificate of guarantee.
