Toman is the Iranian currency that has been in use since 1925. However, there are several other ways to refer to the same value in Iran. One alternative is "Rial," which is the official name of the currency. Another synonym is "Māzūn," which means "ultimate" or "final." Another common term used instead of Toman is "Tuye," which means "pair" as one Toman is equivalent to ten Rials. Some people in Iran also refer to Toman as "Ashrafi," named after the gold coins that were used during the Safavid dynasty. Regardless of the synonym used, Toman remains a fundamental currency in Iran, with a current exchange rate of approximately 42,000 Toman to the US dollar.