Here’s a link to a lion-o on ebay.
He’s a 14 back with an 8 back bubble…
Let me know what you think.
http://www.ebay.com/itm/Rare-MOC-Vintage-Thundercats-Lion-O-1985-/150796183049?pt=LH_DefaultDomain_0&hash=item231c272609#ht_500wt_1202
I think it is a factory error,yet a nice looking one!
We would have seen other similar Lion-Os given the popularity they have and becuase i’ve been searching and collecting Lion-O MOC for a very long time i can securely say that it is the first one i have ever seen.
We can’t leave out the ‘Resealing’ explanation though…
I am not sure if this is the same figure but this is the second Lion-O i see over the last 2 months with the card and blister variation:
http://www.ebay.com/itm/K1005112-LION-O-THUNDERCATS-MOC-MINT-ON-SEALED-CARD-100-COMPLETE-VINTAGE-/120899898657?pt=US_Action_Figures&hash=item1c26320d21
I don’t think this is a resealed figure.If more come up then we’ll have officially a Series 4 Lion-O!
By the looks of it it’s definitely a different figure, different marks, creases etc.
Second one we’ve seen in a short period so you could have a good point about a series 4 liono. If not its Definately a factory error worth having.
Or some Chinese factory realised that it’s not only Transformers G1 worth reproducing… or at least some person remaking cards.
What makes me think about that is the recent frequency and the fact that the cardback looks glossy. No LJN cardback of mine is glossy on the back, only on the front.
Ok, if we have a third case, i am calling it officially an epidemic…a i mean Series 4 Lion-O!!! 
LOL