10 000 000 Mark Krupp

Krupp's issuance of notgeld at astronomically high denominations in 1923 was a direct consequence of the Reichsbank's inability to supply sufficient currency for payroll during the hyperinflation peak. Large industrial employers across the Ruhr were effectively forced into private money printing simply to pay their workers on time — wages were sometimes adjusted daily to keep pace with the collapsing mark.

The ten-million mark figure, staggering by any peacetime measure, was already borderline obsolete within weeks of printing. By November 1923, a single US dollar was worth over four trillion marks.