| Original title | Dyrekøbt Venskab |
|---|---|
| Danish title | Dyrekøbt Venskab |
| International titles | Der Schwur des Schweigens, Dearly purchased friendship, Dearly Purchased Friendship |
| Other titles | Tavshedseden |
| Leikstjórn | August Blom |
| Screenplay | Bernhard Holz |
| Appearance | Thorkild Roose, Robert Dinesen, Henry Seemann, Else Frölich |
| Land | Danmark |
| Domestic distribution | Fotorama |
| Technical info | 770 meter, 35 mm, Stum |
| Danish theatrical release | 07.08.1913 |
| Cinemas | Kosmorama (København) |
| Kommentar | Nordisk neg. nr. 913. |
Companies |
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| Production company | Nordisk Films Kompagni |
| Domestic distribution | Fotorama |
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Instruktion |
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| Instruktion | August Blom |
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Manus |
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| Manus | Bernhard Holz |
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Medvirkende |
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| Oberst von Branner | Thorkild Roose |
| Ralf, officer | Robert Dinesen |
| Udo, officer | Henry Seemann |
| Alice, von Branners datter | Else Frölich |
| Medvirkende | Egill Rostrup |
| Medvirkende | Svend Bille |
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| Type | Source | Forfatter | tíma |
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| Program - stumfilm & mikro |