Well, I've never heard of a black dot in Pokemon cards, best bet is assuming it's a printing error or something. Best bet is going to Pokemon's website and checking card markings, like what type of Pokemon it is and stuff.
Ive heard of some with the same dot on the corner which is the laser guider to guide where the cards are to be cut. It's a pretty huge error but I don't know if it's worth a lot
Ive heard of some with the same dot on the corner which is the laser guider to guide where the cards are to be cut. It's a pretty huge error but I don't know if it's worth a lot