Banknote Blog

Collector's Reference · May 19, 2026 · 10 min read Hyperinflation Note vs. High-Denomination Note: What’s the Difference (And Why It Matters for Collectors) Every collector has asked it eventually: is the Iran 10 Million Rial a hyperinflation note? Is the Zimbabwe 100 Trillion just a really big banknote? The distinction matters — here’s why. Quick Answer A hyperinflation note was issued during a period of monthly inflation exceeding 50% — the academic thr …