So in the same way we dont see Han Solo progress beyond the 12A card, as they printed more of those and had a surplus, I think the same is true for Luke, Leia, Chewbacca, C-3PO and Ben in terms of progressing from 12B on to 12C. And if you look at the cards we do see as 12C, there are reasons why they may have progressed to12C. All 3 generic characters Jawa, Stormtropper and Sandpeople progressed to 12C. Some kids had multiples of these figures maybe they needed to keep printing more. Jawa and DSC were late releases which would also explain why we see DSC on 12C as well as Jawa. And Darth Vader and R2D2 could have been more popular than originally anticipated so they needed to print more of those cards. Lastly, both Darth Vader and Stormtropoer could been involved in the diecast ship mix up could have been reprinted for this reason too. At this point I've looked extensively on facebook, vectis, google images and ebay and found no new examples. I'd still like to be proven wrong though!
Many Bothans died to bring us this information...
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