90 Gulden

The 90 Gulden denomination is one of the more eccentric choices in Austrian fiscal history. It was issued during the revolutionary upheaval of 1848 — the same year the Habsburg government faced simultaneous uprisings in Vienna, Prague, and Budapest — and the unusual face value reflects an attempt to calibrate paper emissions to existing coin equivalencies rather than round commercial convenience.

The k.k. Staats-Central-Cassa was a state treasury instrument, not a conventional bank of issue. Notes from this series were produced domestically in Vienna at a moment when the government's creditworthiness was genuinely in question.