As was often the case with films of this kind, star Brad Harris did his own stunts and was dubbed by a different actor in post-production.
Filmed simultaneously with Samson contre Hercule (1961), also directed by Gianfranco Parolini, using many of the same sets and locations and featuring much of the same starring cast: Brad Harris, Sergio Ciani (aka Alan Steel), Mara Berni, Serge Gainsbourg, and Carlo Tamberlani.