1 Toman - Naser al-Din Qajar

The toman was not an Iranian invention — it derived from the Mongol tümen, meaning ten thousand, and had circulated as a unit of account across Persia for centuries before being struck in gold. Naser al-Din Shah, who came to the throne in 1848, inherited a mint system in disarray and spent much of the 1850s attempting to regularize coin weights and fineness across provincial mints that had long operated with considerable independence.

KM#858 belongs to that transitional period, before the more systematic reforms later pressed on Iran by European creditors and advisors.