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8. Green stamp money

We normally think of money as fully fungible, meaning it is interchangeable for like value of all goods and services. But this is by no means universal. In some cultures, certain currencies can only purchase certain things, such as a bride or raw land. This Vietnamese bill is one such example. It operated like the old Green Stamp coupon book.

"Around the edges are a bunch of perforated coupons that you would tear off to buy pieces of clothing; you would tear one off for a shirt or a pair of pants," says Doty. "It literally was denominated in clothing."

By CreditCards.com