I believe Keith Olbermann was the one who picked up the Wagner from the nun's find, and I believe he has another better copy. Here's the link to the thread on Olbermann's newest Wagner:
Link
I think cards like the T206 Wagner go beyond the hard core hobbyists. I always think that every year there are newly minted baseball (or in other sports also) multi-millionaires. If these guys decided that they wanted to scoop up a few of the top cards or memorabilia in the hobby, they could do so in an instance. For example, if Pujols or ARod decided they wanted to collect a few cards, it would be pocket change for them, and their advisers would probably steer them to cards like the Wagner.