well it looks like a normal 12-back.
except of course that the comicpicture on the top of the cardback is missing?!?!
hmm never seen it before.
must be some kind of "rearrangement"-moc released after the 8-backs, but before the normal picture backs were released.
so *NERD-MODE ON* i guess the cardback should read the generation-sign: "G3" on the bottom right (because the 8-backs are definitely "G1" and "G2") - but it's unreadable due to the small picture. *NERD-MODE OFF*
cool find, Eddie!!!