0 Euro Castelo de Guimarães

Oberthur Fiduciaire produces these souvenir notes under the EuroSouvenir program to full De La Rue-grade security specifications — watermark, security thread, serial numbers — despite the face value rendering them legally worthless. The Guimarães castle issue belongs to a sprawling series of Portuguese regional editions that accelerated sharply after 2019, when the souvenir note market expanded into smaller municipalities and heritage sites previously considered insufficiently commercial.

Guimarães holds a specific claim in Portuguese historiography as the birthplace of Afonso Henriques, the first king of Portugal, which is why the castle appears on municipal branding with unusual frequency.