On the Sunday was a US dollar worth about 110,000 rials on the unofficial foreign exchange market.
Valutaraset associated with the us sanctions against Iran that U.S. president Donald Trump brought in last year after he said up kärnenergiavtalet JCPOA from 2015.
The weak rialen cut Iran's trade last year and contributed to inflation in november was nearly 40 per cent. The galloping inflation has led to sporadic street protests since 2017.
Read more: She is suspected of having violated U.S. sanctions against Iran.