After searching like a mad man across the net, I'm still very surprised that this specific image of Asmodeus is impossible to find.
See here for reference:
http://07th-expansion.net/Cgi/clip/Up_cg/464.jpg
at the far right, you can see quite a nice art, but I have trouble to understand why it is simply nowhere to get.
As a trivia, that art has also been used for a
Lycèe card.