0 Euro - Bodensee Konstanz

EuroSouvenir's zero-euro notes are a French-originated collector scheme launched around 2015, licensed through the Banque de France and printed to legal-tender specification — same Oberthur security paper, same intaglio process — despite carrying no actual monetary value. The program's credibility rests almost entirely on that production pedigree. Oberthur Fiduciaire has printed currency for dozens of issuing authorities, and the physical quality here is indistinguishable from circulating notes of comparable denominations.

Konstanz has a particular geographical oddity worth knowing: the city is physically surrounded on three sides by Switzerland, a quirk that kept it from being bombed in 1944 — residents left their lights on to blend with the Swiss side of the lake.