Off hand I'd guess Justice League #55, since that is what is in the link.
I have recently figured out how to make the logo a small printed plastic piece, so wait until he is finished!
DISCLAIMER: C3G claims no ownership of the characters or artwork used for C3G customs. All rights for the characters belong to their respective publishers/creators. C3G cards are not intended for sale, and C3G does not authorize any party to profit from C3G cards.
RIP George Perez and Stan Lee