FREE CLARK KENT!
In 1985 (second series), with just 5 proofs of purchase you could get this exclusive mail-away offer Clark Kent figure. This figure was never released on a cardback, although mock-ups of a cardback have shown that it was discussed as a possibility.
It came in a white mailer box, and while rumors have suggested that inside the box he came in a plastic Kenner bag, that rumor has been opposed by many who claim to remember the box having no Kenner bag inside. Boxes were sent out from Carlson Fulfillment Company.
Additional photos: Ken Rohlf