0 Euro - Thorgal

Thorgal — the Belgian-Polish comic series created by writer Jean Van Hamme and artist Grzegorz Rosiński, first published in Tintin magazine in 1977 — is an unlikely subject for a banknote format, even a commemorative one. The Euro Souvenir program, launched in 2015, uses the legal note dimensions and Oberthur Fiduciaire's security printing infrastructure to produce these pieces, which are legal curiosities: face value zero, no monetary function, but produced on genuine banknote equipment by one of Europe's primary currency printers.

Oberthur's involvement gives these souvenirs their credibility as collectibles — the paper, print registration, and UV-reactive elements mirror production standards applied to circulating currency.