### German: 1956 ging Słania nach Schweden, wo er drei Jahre später anfing, im Büro der Schwedischen Post zu arbeiten und er wurde dort der leitende Graveur.
### English: In 1956 Słania went outside Sweden, where three years later he started working in the Swedish Post office and he became the chief engraver there.
### Errors: There is a minor incorrect preposition or article error in the English translation.

### Improved English: In 1956 Słania went to Sweden, where three years later he started working in the Swedish Post office and he became the chief engraver there.
