20 Rials - Mohammad Rezā Pahlavī

This issue spans the years immediately preceding the Revolution, a period when the Shah's government was pumping petrodollar revenues into an industrialization program so aggressive it generated double-digit inflation. The Central Bank was under pressure to maintain confidence in the rial while the economy visibly overheated. Coins circulated hard and fast in a country where cash transactions dominated daily commerce outside Tehran.

KM#1181 is straightforward within the series — no major die varieties documented, no significant minting anomalies. What distinguishes it is survival condition: heavy circulation losses are the rule, not the exception.