10 Heller

Sankt Aegidi is a small municipality in Upper Austria, and this 10 Heller note is a product of the Notgeld wave that swept Austria between 1919 and 1921 — a period when the central government's currency was so eroded by postwar inflation that individual communes resorted to printing their own emergency scrip to keep local commerce moving. Thousands of Austrian towns did the same, which makes attribution and cataloging genuinely difficult at the lower tier of issues like this one.

The Jaksch/Pick reference places it firmly in the documented series, but surviving examples from minor rural communes tend to be undercirculated — bought by collectors almost immediately rather than spent.