Tajemnica skrzynki pocztowej
| MPAA Rating: | NR |
| Genre: | Romance |
| Country: | Poland |
| Directed By: | Aleksander Reich |
| Written By: | Józef Relidzynski |
| Cast: | Benedykt Hertz, Aleksander Zelwerowicz, Maria Bogda, Stanislawa Karlinska, Boleslaw Mierzejewski, Józef Wegrzyn, Zofia Lindorf, Iza Bellina, Eugenia Zasempianka, Jerzy Marr |
| In Theaters: | Feb 15, 1929 |
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