Teeth are the form of money used by most M’rowans. The concept of teeth as currency originates in the time of the early clan system on Azin, when successful hunters would be awarded the teeth of the prey they had killed. Once the idea appeared of exchanging these teeth for goods or services from the clan, a working economy based on them soon emerged.1
As the size and complexity of the economy grew, and transaction sums increased, the idea of using units of account rather than physical teeth became more common, but paper money to represent sums of teeth was never in use. In the present day, the great majority of transactions are handled digitally, but small teeth are still minted in gold, silver or other precious metals for use as coinage.
Some more traditionally-minded merchants will even accept actual animal teeth as payment, although the value of such must usually be negotiated on a case-to-case basis. Teeth from some animals, such as the Azin h’ratze, are often valued quite highly.
1 Consider the historical parallel to the origins of money in ancient Earth civilisations, such as the Egyptians or Assyrians, where coins would often represent specific amounts of grain.