From the Winter of 1979: a battered and much used (but not by me) copy of the SUPERHERO FUN AND GAMES WINTER SPECIAL, one of the first Winter Specials (following a burst of summer one-shots earlier the same year) published by Marvel UK.
This is, essentially, a puzzle or activity book of the type frequently deployed to keep kids quiet during the holidays or during long trips. The contents, themed around Marvel's characters, was recycled from a series of US books.
It must have been a success as a monthly series followed in 1980. This special, and the ongoing version, must rank amongst the hardest to find M-UK titles of the era. Deemed less collectable by the faithful, kids were far less likely to keep them in good nick. As you'll see, even the cover of the copy I managed to track down has been defaced. Is nothing sacred?
Once again, Conan - a licensed character - is treated as one of Marvel's own with pride of place on the cover.