100 000 000 Mark

Düren's municipal authority was among hundreds of German local governments forced to print their own high-denomination emergency currency during the hyperinflation of 1923, when the Reichsbank could not supply notes fast enough to meet demand. At 100,000,000 Mark, this note was already obsolete within weeks of issue — the Reichsbank's own denominations were climbing toward the billions and trillions by October of that year.

Merkelbach references 26–29 suggest at least four distinct variants within this denomination, most likely differentiated by date or serial block. Locally printed Notgeld of this period frequently shows inconsistent ink saturation and registration, a direct consequence of civilian print shops operating commercial presses under urgent municipal contracts.