I don't really have anything to add, I just love this book. I searched for "The NeverEnding Story" in this community, saw that there was no post about it and wanted to fix that :).
Image found on Facebook. I think the source of that specific printing is the Spanish version of the book, [EDIT: as pointed by @[email protected], the version on the link is also a Spanish version, I may have had a brainfart because of the font (?)] ~~but it's very similar to some German version covers~~.
I have the edition this picture is from in my shelf, my father handed it down to me when I was a kid. It's a gorgeous edition, each part of the story is printed in a different color to represent which world it's taking place in, I wish more books tried to experiment with the style a little bit. By the way, both links in your post lead to two different Spanish editions, mine is the one from the second link.
Thanks... I must have had a brain fart. I don't know why I though it was a German edition, probably the font (facepalm).
Fixed!
No problem! :) I think the original German version is extremely similar, even the font is the same haha.