0 Euro Cathédrale Notre-Dame de Strasbourg

The Fondation Œuvre Notre-Dame is not a bank but a conservation body, founded in 1224 and one of the oldest building preservation institutions in Europe — it funds ongoing restoration of the Strasbourg cathedral and has used souvenir zero-euro notes as a revenue stream since the format became commercially viable. Oberthur printed these with full security features: genuine intaglio, UV-reactive elements, and a metallic strip, making them technically indistinguishable from circulating denominations in terms of substrate and print process.

The 2020–2022 window almost certainly reflects production tied to the cathedral's pandemic-disrupted visitor seasons, when souvenir revenue collapsed and then partially recovered.