0 Euro - Grotte Chauvet 2 Ardèche

Grotte Chauvet — discovered in 1994 in the Ardèche gorge — contains some of the oldest known cave paintings in the world, dated to roughly 36,000 years ago. Access to the original cave has been closed to the public since 2015 to prevent the atmospheric damage that destroyed much of Lascaux's pigments after its discovery. The Caverne du Pont d'Arc replica, known informally as Chauvet 2, opened the same year as a full-scale facsimile covering some 8,000 square metres.

Oberthur Fiduciaire has been the dominant printer of the EuroSouvenir series since its inception, handling security substrate and serial numbering to give these collector pieces the physical credibility of genuine currency — though they carry no legal tender status anywhere.