Difference between single-coin vs multi-coin currencies

In the real world — I am from Europe — I often hear and participate in discussions about how printing a paper 2 Euro note would have an impact on micro-economy, i.e. how it would make people less psychologically prone to spend such a hypothetical note instead of the equally-valued real coin.

For reference, Euro currency is as follows:

• Coins:
  • 0.01 €, 0.02 €, 0.05 € (copper color)
  • 0.10 €, 0.20 €, 0.50 € (golden color)
  • 1 €, 2 € (gold/silver bicolor)
• Notes: 5 €, 10 €, 20 €, 50 €, 100 €, 200 €, 500 €

So my question is, what is the impact in a constructed world of having a single currency coin (like the standard gold coin often used in RPG video-games), as opposed to more than one type of coin (e.g. the 1 gold = 100 silver = 10k copper coins in D&D), or more realistic setups as described above?

posted over 9 years ago

guido‭

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