0 Euro - Masivul Bucegi

EuroSouvenir's zero-denomination collector notes are produced under licence and conform to genuine European Central Bank dimensional and security specifications — Oberthur's involvement ensures the security thread and watermark are not decorative imitations but actual banknote-grade features. R. Faille's signature appears on the series broadly, functioning as a house authorisation rather than a named central bank governor. These notes are legal nowhere but are increasingly tracked by a dedicated collector base that treats them as a distinct topographic series documenting European landmarks region by region.

Bucegi is a karst massif in the southern Carpathians, known geologically for its wind-eroded rock formations and, more contentiously, for a range of fringe theories about alleged underground chambers — none of which have any archaeological standing.