When Egon poses as a foreign businessman, he is originally speaking with a German accent. In the German-dubbed version, he is speaking English.
Ejner Federspiel and Birgitte Federspiel, who play a shopkeeper and his daughter, are father and daughter in real life.
The movie theater in the beginning shows a movie called "Det store kup". This is a reference to the Olsenbanden movie from the year before, The Olsen Gang's Big Score (1972).