0 Euro J'y étais - I was there

The "J'y étais" series is a retail souvenir product sold at tourist sites across France and elsewhere in Europe — zero face value, no legal tender status, but produced by Oberthur Fiduciaire using genuine security paper and holographic strip, the same contractor responsible for a significant portion of actual euro banknote production. The choice to use a real security printer rather than a novelty press is a deliberate commercial signal: these sell partly on the credibility of the substrate.

Oberthur's involvement dates to the original euro rollout in 2002, which gives the souvenir line a plausible lineage — though the ECB has no role in authorizing or overseeing it.