Comic Link had an auction for this piece of original art by Dick Giordano (they list the artist as unknown, but one look can tell this is clearly the great man's work). Also just as obviously, this was done for something Super Powers-related, though I don't recall ever seeing this particular piece on any SP merch. Anyone have any idea?
Click the pic to embiggen and enjoy the beautiful Giordano art. I love Robin jauntily laying atop GL's villain cage, it's so disrespectful to Luthor, Brainiac, the Joker, and Penguin!
(h/t: F.O.A.M.er Ilke Hincer)