they were given out to people at gas stations and stores i have been doing some research because i have 5 of them and blue chip stamps are not really worth anything since they were so popular back in...
My mother's senior center gives out blue chip stamps when they play bingo. They gave her a catalogue to redeem her stamps. It has to be done through the mail since there are no more redemption...
This is a common US commemorative stamp. If you want to buy just one it will probably cost you from 10 to 25 cents at a stamp store for a used one. Unused, around twice face value If you want to...