Check out an auction for the actual cover art used in the Uk Thundercats Comic Issue 1. From the description:
This is the original artwork for the cover to Thundercats issue one from 1987. Artwork in perfect condition. Very very slight rolling crease to the artwork, wouldn’t be visible once framed. Artwork measures 12.5” (31cm) X 10” (26cm). Very rare to get full colour Thundercats comic cover artwork & you can get no better than the cover of ISSUE ONE! See pictures below for exact condition.
Check out the auction Here.