500 000 Mark

Uerdingen am Rhein was a small industrial town on the lower Rhine, and like hundreds of German municipalities in 1923, it issued its own emergency currency — Notgeld — as the Reichsmark collapsed under hyperinflation. By the time half-million Mark notes were being printed, the denomination was already losing ground to prices before the ink dried. The Schwann press in Düsseldorf handled a significant volume of municipal Notgeld commissions during this period, which kept production costs low but meant little visual distinction between one town's emergency paper and the next.

Uerdingen itself was absorbed into Krefeld in 1929, erasing it as an administrative entity entirely.