QUOTE(Scottishmoney @ Sep 11 2006, 04:33 AM)
Shell Oil Co gave these away as promos during the 1970's. You would get a folder, with cutouts to insert these coins. As you made successive fuel purchases over time you were supposed to be able to get up to Richard Nixon, the then current President. They also did a dinosaur series.
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Shell did something similar here, except the series was related to aeronautics(?): airplanes, hot-air balloons, etc. I will see if I can scan one of mine.