So now we have switched gears from it being a reprint to possibly being counterfeit.
If it's not a reprint, and it was being sold with a plaque for $10, and alone for $3, then it's definitely counterfeit. I don't think you managed to snag a real Gretzky rookie for that kind of deal.
However, here's an eBay auction for a "vintage" reprint. Zooming in on the image, nowhere does it say "Reprint" so perhaps it's something like that?
And here's one other one that carries no indication it's a reprint except the graded company's label.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.