7-UP Superman Sweepstake bottle cap (1978)
In 1978, during the onslaught of products that featured Superman due to the marketing of Superman: The Movie, 7-UP promoted the 7-UP Superman Sweepstakes (labeled as “Sweepstake” on bottle caps). Winners of the sweepstake had a chance to receive cash prizes, travel to many destinations, or a Mazda RX-7.