Are 2001 Fleer Greats of the Game error cards valuable?

Question

I have a couple 2001 Fleer Greats of the Game error cards where the silver Fleer logo was printed on the back of the card instead of the front. They are of Hank Greenberg and Mike Schmidt. I have looked every once and awhile to see if these errors are worth anything. Does anyone know?

Answer 1

Mis-imprinted foil is (sadly) a rather common type of error and does not command much interest. Still, you've got two HOFers, so they might bring a couple of bucks on eBay as curiosities. Don't hope for a lot.

Answer 2

Check a Beckett's guide.
http://www.beckett.com/default.osi