Notes:

• Original English title: Dark Legion.
• Translated by Elisabeth Simon.
• Month stated on copyright page ("Oktober 1973"). Day deduced from the 4-weekly publication schedule and nos 7 & 8 published in April 1974.
• The cover artist is not credited, there is no legible signature. Pennington himself ruled out that it could be his work.
• As usual in this publication series, the cover counts as page 1.
• Other prices: S 21 (Austria), sfr 3.60 (Switzerland), Lire 700 (Italy), F 45 (Belgium, Luxemburg), FF 5.50 (France), Ptas 80 (Spain), hfl 3.75 (Netherlands).

The cover art was originally used for the Popular Library reprint in 1972 of Leonard Cline's Dark Chamber (1927), as discussed here: https://leonardcline.blogspot.com/2021/08/the-dark-chamber-paperback-cover-artist.html. The artist is unknown.