Edit: Nevermind, I made a mistake with the Marquard
What do you guys think, same card? This was the closest I can find. But I don't think this is the same card because the border on the bottom is thicker....Unless this guy trims cards too. Yikes. However that signature looks a lot like the Marquard rejected signature that blew everything up.
https://www.worthpoint.com/worthopedia/1909-11-t206-rube-marquard-follow-419403623
This could really ruin JSA's reputation. I don't see how they never thought to do a quick background check of cards. Takes no time.