100 000 000 Mark Thüringische Staatsbank, Series D - blue

Thüringische Staatsbank was one of dozens of regional German institutions authorized to issue emergency Notgeld during the hyperinflation crisis of 1923, when the Reichsbank could not physically print fast enough to keep pace with collapsing purchasing power. By the time 100-million-Mark denominations were circulating, that sum was worth less than a loaf of bread — the denomination itself a marker of how rapidly the situation was deteriorating in the summer and autumn of that year.

The Series D blue designation distinguishes this from parallel issues in other colors, a practice adopted to manage successive print runs without redesigning the note entirely. Weimar, as the bank's home city, handled production locally rather than contracting to one of the major Leipzig or Berlin printers.