The model is currently configured for Euros, but this should be easy to adapt to other currencies. The amount of coins per column is aligned to the standard size of coin rolls in Germany.
The “reduced size” variant allows to optimize the size for more common printers, feel free to adjust it. Another possibility to reduce the required print bed size would be to generate two single smaller boards with just one and the other half of the coins.
The author hasn't provided the model origin yet.