250 Rials

Iran's post-revolutionary coinage underwent significant revaluation pressure throughout the 2000s as sanctions and inflation steadily eroded the rial's purchasing power. By the time this denomination was circulating, 250 rials bought almost nothing — street vendors routinely refused coins of this value altogether. The Central Bank continued issuing them regardless, a bureaucratic inertia common to central banks unwilling to formally acknowledge denominations had become functionally worthless.

KM#1270 is a short-run type, replaced within a few years as Iran restructured its circulating coinage ahead of the eventual toman redenomination discussions.