This work is recorded in the Archivio Arnaldo Pomodoro, Milan under number 317.
"I began to work on geometrical forms around 1960 (columns, spheres, wheels, cylinders, concave and convex planes, cubes, discs and pyramids), and that was a process of giving them a relationship to the 'writings' that were already an essential part of my work. Sometimes these scriptural 'glyphs' invaded and modified one or more surfaces. At other times, my modelling of interior forms would crystallize as autonomous forms that would thicken or break open. At still other times, the structures themselves, and the 'investigation' of the interiors of these forms would reveal deep pits and new internal formations as well as the fact of corrosion" (Pomodoro quoted in S. Hunter, Arnaldo Pomodoro, New York 1982, pp. 195-6).