Company Credits

Production Companies

• EPIC (A Coproduction Italian - Spanish) (as Epic Film {Roma})
• Hesperia Films S.A. (A Coproduction Italian - Spanish) (as Hesperia Films {Madrid})

Distributors

• Euro International Films (1967) (Italy) (theatrical) (dubbed)
• Warner Bros./Seven Arts (1967) (Spain) (theatrical)
• Butcher's Film Service (1968) (UK) (theatrical) (dubbed)
• Constantin Film (1968) (West Germany) (theatrical)
• Cosmopolis Films (1968) (Belgium) (theatrical)
• Les Films Marbeuf (1968) (France) (theatrical)
• Peace Film Company (Heiwa Eiga-Sha) (1968) (Japan) (theatrical) (English dubbed) (Japanese subtitled)
• Intercontinental Films (1971) (Argentina) (theatrical)
• Stellar IV (1972) (USA) (theatrical) (dubbed)
• Arrow Video (2021) (UK) (Blu-ray)
• Arrow Video (2021) (USA) (Blu-ray)
• Movietime (1967) (World-wide) (all media)
• Starmedia Home Entertainment (2004) (Germany) (DVD)
• Videoasia (2009) (USA) (DVD)
• daredo (2016) (Germany) (DVD) (as Daredo Media)

Other Companies

• Edizioni Musicali Rete (music publishing and recordings) (as Edizioni Musicali Rete s.r.l.)
• Fono Roma (synchronization)
• C.I.D. (dubbing)
• Dino de Laurentiis Cinematografica (studios) (as Dino de Laurentiis Cinematografica Roma)
• Studio Favalli (titles)
• Studio Calabria (titles)
• Ciarlo Casa d'Arte - Firenze (costumes)
• Rocchetti (wigs)
• Cimino (furnishings)
• Rancati (weapons)