Celebrating the 50th anniversary of Mars Attacks and the launch of a new series of trading cards, Topps is producing an exclusive nine-card Mars Attacks promo card set for the 2012 San Diego Comic-Con. The nine cards, featuring artwork from comic artist John McCrea, come together to form a single large image. John McCrea is also the artist of the upcoming IDW Mars Attack comic, which will have an exclusive cover at the con as well.
Getting the cards will require putting in some work, though. You will have to travel to a few booths listed below (thanks to Cardboard Connection.)
Diamond Comic Distributors
Gentle Giant Ltd.
Nerdist News (via Legendary Pictures)
Russ Walks & Wild Tempest
I wouldn’t expect these to last too long so be sure to hit these booths early and often.