I got these keys from actual CD's of COd4 from a friend that stole them from some store down here where i live. They wernt open so i got the cd keys and i would like to sell. There all LEGIT keys for i have tried them myself. I do not use them for i have my own. I am selling 2 of the 4 i got for i have sold one and am using the other. If you would like to buy post here. Or if you want info Post here.!!