10 Pfennig

Erfurt's 1920 Kleingeldscheine series emerged from the acute small-denomination coin shortage that gripped German municipalities in the years immediately following the First World War. The Reichsbank's inability to supply adequate subsidiary coinage forced hundreds of German cities to issue their own emergency paper — Erfurt among them. Otto Richters & Co. was a local commercial printer, not a specialist in banknote security production, which is exactly what you'd expect from municipal notgeld of this period: functional, locally sourced, and printed in quantity.

Alfred Hanf's design credit is worth noting — named designers on notgeld of this denomination are not especially common, suggesting the city took some care with the commission rather than simply pulling a stock layout.