The sculpture is registered in the Arnaldo Pomodoro Archive under n. M/89/5, as for confirmation of authenticity received by mail from the Arnaldo Pomodoro Foundation, Milan
Sculpture created for the Association ""Together for Peace Foundation", Rome. Lost-wax casting, Microfonderia Geccherle, Milan. 30 copies in Arabic numerals + some artist's proofs; M/89/5 Burnished brass base cm 15x15x3. , Literature: "Together for Peace Foundation - working all over the world since 1988", Rome, 1995, ill.; Arnaldo Pomodoro, Catalogue Raisonné, no. M172; "Sotheby's MI0337", auction catalogue, Milan, April 18-19, 2018, Arte moderna e contemporanea, n. 124, ill. p. 182. "Il Ponte casa d'aste 347", auction catalogue, Milan, June 10, 2015, Arte moderna e contemporanea, n. 318, ill. p. 115.
Signed bottom left