I'm referring to the little bio-cards that are included with the Japanese line of Transformer reissues and Encores. Since I received my Tigertrack today, I started to gather all the bio-cards that I have. Sadly, I think I tossed a few out not thinking I'd want them later on. But as I was going through the 8-10 cards I do have, I noticed a few differences. I have the Japanese reissue of Hot Rod and Rodimus Prime. I noticed that in front of their issue-number, it has a "C" in front of it. The rest of the reissues do not have that "C", not even the Encore line. So my question is, what does that C stand for? The only thing I can think of is Collectors Edition, but aren't they all collector items? Puzzled. Also, where can I get the rest of the bio-cards that I either tossed, or am missing? And why doesn't the American reissues have them?