Crazy that nobody really noticed this until just now. Or at least it never went mainstream. The card will be worth less then $1.00 is less then a week. As cool as it is that set of cards was from the era when cards were way overproduced. Anyone who collected cards back then probably has a couple of these Mark Jackson cards in their "commons" boxes. I'm sure I probably do. By the time I can find it , it will be worthless. There are gazillions of this card out there.
Now if it was from the mid 80's before the boom the value would hold.