The train wagon rented by the police for their party is number PT 1448. 1448 are the last four digits of the phone number for any police station in Denmark.
According to Yvonne, high society lives "in Gentofte, on the right side of Lyngbyvej". This was where director Erik Balling lived.
The money for the coup is stolen from the "29 November 1974 Corporation". This date was director Erik Balling's 50th birthday.
Of the fourteen original Olsen Gang movies, this is the last one not featuring Bjørn Watt-Boolsen.
The little orange locomotive (DSB traktor 57) the gang drives can be seen in the Danish railroad museum in Odense.