[Eric72]

This wasn't a big mistake from a monetary perspective. Still, it makes me angry to this day.

Back in the early '90s, I was 21 years old. I had been collecting for a while and decided to start setting up at local card shows. Like most people that age, I thought I knew it all. Someone was walking around the show, selling their cards. My young, stupid, foolish self wound up buying a fake Donruss Mattingly rookie.

I still have the card. It still makes me mad to look at the damn thing.

On the flip side, I thoroughly learned my lesson. That transaction seriously humbled me; apparently I didn't know everything. The whole experience kicked off a very successful run of about ten years as a show dealer. I was motivated to never make a mistake like that again,