These tokens were issued by various states during the Great Depression of the 1930's.
They were issued to make change for fractions of a cent for customers to pay the new state sales taxes.
The token values were usually in "mills" or 1/10 of a cent.
Most issues were for one or five mills.
Most states stopped making them in 1935.
They are not worth very much now, usually $1.00 or less. A couple of varieties are rarer.
The following states issued them:
Alabama, Arizona, Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri,
New Mexico, Oklahoma, Utah, and Washington.
My father had a position in the early 1930's that involved travelling, and he saved these tokens.