The listing, Mythical Pokemon Mew 3DS Code has ended.
Notice: This code cannot be redeemed if you have already gotten the Mew from GameStop!
This auction is for a code to download a Mew via the Mystery Gift feature. This works on Pokemon X, Pokemon Y, Pokemon Omega Ruby, and Pokemon Alpha Sapphire.
I got 2 of these in the Pokemon official Trainer Club Newsletter, but I already have the one from GameStop, and you can redeem only one or the other. So I'm selling both of these.
I'll list the other one once this one ends, since I have less than 100 credits.