By 1982 the action figure line was much larger than 12 figures. Kenner decided to offer up another display stand for figures. This one consisited of 4 L shaped stand that could be connected in various ways. Each Stand could hold 14 figures, so with all 4 you could display up to 56. The stand also included 4 double sided cardboard backdrops with scenes from Star Wars and The Empire Strikes Back. The stand required 10 proofs of purchase and $2.00. The offer expired on May 31st, 1982. This stand was never available in stores, so the only way to get it was in the mail promotion. Here is how it appeared on the back of the figure cards.
Here is the one in my collection with the mailer box and paperwork.
and finally the commercial advertising the promotion.