Concetto spaziale

etching with relief and holes, 1964, on Fabriano, signed in pencil, numbered 27/50 (there were also 11 H.C.), published by 2RC Edizioni d'Arte and Galleria Marlborough, Rome, with the 2RC blindstamp, the full sheet, framed
Sheet: 63.5×50.4cm
Literature: Ruhé & Rigo E-19
400,000-600,000 JPY