I was comparing two copies of Donkey Kong Classics for the NES (both of which I own, I was going to sell one), and I noticed the top label is a different shade on one of them. I examined it a little more, and noticed one of them didn't have the Nintendo seal of quality.. I may be overreacting (I am a little new to collecting), but could one of them be a pirated cart or maybe worth anything?
I will upload some crappy camera-phone pictures a little later.