These "generic" tokens were usually made for use in arcade games, vending machines, car washes or other coin-operated machinery (such as motel laundromats). Generic tokens are cheaper than having tokens made specifically for you that included your company logo or business name.
With the rise of swipe-cards and easy credit-card micropayment methods, the use of tokens for such things is rapidly becoming obsolete.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis