500 000 Mark

Kiel's 500,000 Mark note was issued during the hyperinflationary spiral of 1923, when German municipal authorities — utterly lacking federal support — were legally permitted to print their own emergency money, known as Notgeld. By mid-1923, the Reichsmark was losing value faster than notes could physically be printed, forcing cities to source printers wherever capacity existed. That Kiel, a major North Sea port, contracted A. Meier in Rüdesheim am Rhein — a small Rhineland town better known for wine than currency production — reflects exactly how strained the printing infrastructure had become.

The 500,000 Mark denomination, astronomical by prewar standards, was itself rendered nearly worthless within weeks of issue.