1 000 000 000 000 Mark

Buer in Westphalia — today absorbed into Gelsenkirchen — was one of hundreds of German municipalities forced to print its own emergency currency during the hyperinflation of 1923, when the Reichsbank simply could not produce denominations fast enough to keep pace with collapsing purchasing power. By the time notes in the trillion-mark range were being issued, a single denomination jump could represent less than a day's worth of devaluation. This particular notgeld was authorised and circulated at the peak of the crisis, before the Rentenmark stabilisation of November 1923 rendered the entire series worthless overnight.

Municipal issues of this type were often printed on whatever stock was available locally, and quality varies considerably within the same series — DeNG catalogues multiple paper variants for this issue, with the "g" suffix indicating a documented printing distinction rather than mere condition difference.