SAN BRUNO, Calif. -- Wells Fargo & Co. has begun dispensing self-adhesive stamps through automated teller machines at four of its California branches.

The stamps, which were introduced at Seattle First National Bank in 1991, are sold in sheets of 18 that match the dimensions of U.S. paper currency. The United States Postal Service designed the stamps this way so ATMs could dispense them from the same bins that hold cash in the self-service terminals.

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