Trading stamps are small paper
coupons given to customers by merchants. These stamps have no value individually, but when a customer saves up a certain number of them, they can be exchanged with the trading stamp company for other merchandise. The practice started in the
1890s, at first given only to customers who paid for purchases in
cash, to reward those who did not purchase on
credit. It grew with the spread of chain
gasoline stations in the early
1910s and then the new industry of chain
supermarkets in the
1920s, and merchants found it more profitable to award them to all customers. Trading stamps were at their most popular from the
1930s through the
1960s.
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a form of sales promotion used by retailers in which customers receive stamps or coupons in proportion to the amount of their purchases; the stamps can be redeemed later for merchandise.
stamps given at checkout to encourage customer loyalty (who is old enough to remember Green Shield Stamps?).