Episode 64 of The Trigan Empire
Imperial Walkabout
aka Abdication
De troonsafstand (Dutch title)
The Abdication (Dutch title, translated)
Imperial Walkabout was originally published in 8 installments in issues 792 (19 March 1977) to 799 (7 May 1977) of Look and Learn magazine.
To date it has not been reprinted in English.
Plot summary (Dutch)
Installments
792 793 794 795 796 797 798 799