I used to play the WWE CCG, Raw Deal. For organized tournaments, they would give out various prize cards, one of which was called "Backstage Signature". They made about 5000 of these in 2004 and most were signed by various wrestlers/divas, etc. Eddie Guerrero only signed the first wave of these, and he only signed 100.
I was lucky enough to get one early on, and I had almost forgotten about it until I moved. There isn't a BV or anything like that, so far as I know. It's a very nice, on-card auto, and it's always been in a sleeve/toploader while it's been in my possession.
(Edit: FYI, I forgot to mention that I was the tournament organizer for Raw Deal in my area. This was one of the cards we received directly from Comic Images, who distributed the game. There isn't any sort of authentication I can provide with this card, but this wasn't something obtained second-hand. This was direct from the source.)
I'm really not too into wrestling these days, so I wouldn't want anything wrestling-related in return, but that being said, Eddie was one of my favorites when I watched so I'm likely not letting go of this easily, if at all. I would mainly like big-name football autos in return.
I likely won't be back in this section, so if you're interested, PM ME.