20 Shilingi

Tanzania's shift to nickel plated steel for this denomination in 1990 reflected broader pressures on the country's monetary supply — the original cupro-nickel 20 Shilingi had become increasingly expensive to produce relative to face value as global nickel prices climbed through the late 1980s. The two-year window of this issue suggests the transition was short-lived, likely superseded by the inflationary pressures that rendered the denomination itself marginal within years.