Not to be confused with the Danish Fantomet that you do have in core already.
Fantomet is the name of the Norwegian comic book dedicated to “The Phantom”. It was published from 1964 to 2018, with a total of 1217 issues. Then restarted and cancelled again in 2025 after only three new issues.
Not sure If you want to add them all or not, as that would be some undertaking, but the series info (with cover images) is here: Fantomet - PhantomWiki
I would ask to add these two though if possible. 1976 issues 19 & 20.
Fantomet 19/1976
“Jaget” (“The Killer”) by Lee Falk and Sy Barry
Cover artist: Rolf Gohs
Country/language: Norway / Norwegian
Format: 17 × 26 cm
Pages: 52 pgs, b/w
Publishing date: September 14, 1976
Editor: Ann-Louis Nerem
Publishing company: Nordisk Forlag
Front
Rear
Fantomet 20/1976
“Hevneren - Det første Fantomet” (“The Avenger”) by Jan Lundström and Jaime Vallvé
Cover artist: Rolf Gohs
Country/language: Norway / Norwegian
Format: 17 × 26 cm
Pages: 52 pgs, b/w
Publishing date: September 28, 1976
Editor: Ann-Louis Nerem
Publishing company: Nordisk Forlag
Front
Rear