0 Euro - Pouhon Pierre le Grand - Spa

The zero-euro souvenir note program, administered by Richard Faille's EuroSouvenir organization from around 2015, occupies a genuinely odd corner of numismatics — legal tender denomination of zero, printed to full ECB security specifications by licensed currency printers, yet sold as a collector item at tourist sites. Oberthur Fiduciaire, one of the few firms authorized to produce euro-specification banknotes, prints the series with the same security thread and microprinting applied to circulating issues.

This example commemorates the Pouhon Pierre le Grand, the celebrated mineral spring in Spa, Belgium — the town whose name became the English word for a thermal resort. The spring itself was named after Peter the Great, who reportedly visited in 1717.