4-1993 Promo Pins,DC Comics SUPERMAN . These were from the Heroes' World Comic Distributers in New Jersey and was a promotion during their yearly year end inventory cleanout sale to dealers only. We have had these in storage for over 25 years and they are new and unused and we are selling in sets of 4 and we have enough pins to make 19 sets , once they are gone we cannot get any more, Good Luck, great display pieces to go with your vintage comics. Will combine multiple purchases , wait for the final invoice.