Quién sabe?
- Leto: 1967
- Država: Italy
- Žanr: Western
- Studio: M.C.M.
- Ključna beseda: mexican revolution, spaghetti western
- Direktor: Damiano Damiani
- Igralska zasedba: Gian Maria Volonté, Klaus Kinski, Martine Beswick, Lou Castel, Aldo Sambrell, José Manuel Martín