0 Euro - Aurel Stodola

Aurel Stodola (1859–1942) was a Slovak-born engineer whose theoretical work on steam and gas turbines underpinned much of twentieth-century turbomachinery design — his 1903 textbook remained a standard reference for decades. The choice to commemorate him on a souvenir euro is unusual; most EuroSouvenir issues favor landscapes or monuments over scientists, and Stodola is not especially well known outside engineering circles.

Printed by Oberthur Fiduciaire under the EuroSouvenir program, which licenses the euro format for officially tolerated novelty issues carrying no legal tender status. Oberthur's security printing infrastructure is used regardless, meaning the paper and production standards are broadly comparable to circulating notes.