100 000 000 Mark Kreis Wetzlar

Kreis Wetzlar was a small administrative district in Hessen-Nassau, and like hundreds of German municipalities in the autumn of 1923, it was forced to issue its own emergency currency — Notgeld — because Reichsbank notes were being rendered worthless faster than they could be printed and distributed. The Kreiskommunalkasse, the district's communal treasury, was not a bank in any conventional sense; it was a local government cashier's office suddenly pressed into the role of currency issuer.

By the time 100-million-Mark denominations were necessary, Germany's hyperinflation had entered its terminal phase. The Rentenmark stabilization came in November 1923, after which most local emergency issues were demonetized almost immediately.