20 Heller Hainburg

Hainburg an der Donau was one of hundreds of Austrian municipalities that issued emergency small-change notes — Notgeld — after the collapse of the Habsburg monetary system left the country without adequate coin supply. The 20 Heller denomination was among the most practical for everyday transactions, and Hainburg's 1920 issue falls into the later wave of municipal Notgeld, by which point the practice had become almost routine across Lower Austria.

The print run of over twelve million is unusually high for a town of Hainburg's modest size, suggesting these circulated well beyond the immediate locality or were printed speculatively for the collector market, which by 1920 had begun distorting Notgeld production figures across the region.