This 50 State Bronze Collectable Set was given away by the Shell Oil Company in the 60s.  An Aluminum Coin depicting the various States with each fillup or purchase When you had all the 50 coins....you could exchange them for 50 Bronze Coins or "Display Set." Since you were never exactly sure which coin you would receive, including duplicates , it took time and perserverance to collect all 50 to make the exchange, thus this is not a common collectable item. "The Display Set" also came with a cardboard insert card and a small booklet that included the history and interesting pertinent facts about each individual State This lising comes with the original envelope, the small booklet and the insert card and along with the Bronze  Coins.