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Den røde rubin
- Jaar: 1970
- Land: Denmark
- Genre: Romance, Drama, Comedy
- Studio: Palladium
- Sleutelwoord: pianist, headmaster, girls' school
- Direkteur: Annelise Meineche
- Gooi: Ole Søltoft, Ghita Nørby, Lotte Horne, Annie Birgit Garde, Gertie Jung, Lizzi Varencke