The Wealth of Nations by Part 2 Chapter 2 Page 116

Before the Act of Parliament, which put a stop to the circulation of ten and five shilling notes, it filled a still greater part of that circulation. In the currencies of North America, paper was commonly issued for so small a sum as a shilling, and filled almost the whole of that circulation. In some paper currencies of Yorkshire, it was issued even for so small a sum as a sixpence.

Where the issuing of bank notes for such very small sums is allowed and commonly practised, many mean people are both enabled and encouraged to become bankers. A person whose promissory note for five pounds, or even for twenty shillings, would be rejected by everybody, will get it to be received without scruple when it is issued for so small a sum as a sixpence.

But the frequent bankruptcies to which such