6/9. Edition, signature and year engraved at the base. Artist's authenticity certificate on photo. Total edition: 9 copies +4 p.d.a. The artwork registered at the Arnaldo Pomodoro Foundation, Milan, with the following inventory number AP 715.
Sitography: Catalog Raisonnée online - Arnaldo Pomodoro n.954.
Publications: Bonhams 23488, auction catalog, New York, NY, November 13, 2019, Post-War & Contemporary Art, no. 30, ill. p. 89; Arnaldo Pomodoro. Reasoned catalog of sculpture, edited by F. Gualdoni, Skira publisher, Milan, 2007, ill. p. 730 (cat. 954); Arnaldo Pomodoro. "Sphere within a Sphere" for the U.N. Headquarters, Il Cigno Galileo Galilei, Rome, 1997, p.98.
Size with the base: 14x11x11 cm.