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Duffy of San Quentin
- An: 1954
- Pays: United States of America
- Genre: Drame, Crime
- Studio: Warner Bros. Pictures
- Mot-clé: prison, san quentin
- Réalisateur: Walter Doniger
- Jeter: Louis Hayward, Joanne Dru, Paul Kelly, Maureen O'Sullivan, George Macready, Horace McMahon