0 Euro Fundação Côa Parque

The 0 Euro souvenir program, administered through licensed issuers and printed by contracted security printers, has been running since 2015 as a collector-oriented scheme operating entirely outside any central bank mandate. Oberthur Fiduciaire produces these on genuine banknote paper with full security features — watermarks, UV elements, microprinting — making them technically indistinguishable from circulating notes by feel alone, which is precisely the point.

The Côa Valley's rock engravings, discovered in 1992 during a dam project that was subsequently cancelled under public and scientific pressure, are among the most significant concentrations of Paleolithic open-air art in Europe. The Fundação Côa Parque administers the UNESCO-designated site.