Timeline of Persian Coinage

Reading the long arc

Persian monetary history is exceptionally long and exceptionally well preserved. Twenty-six centuries separate the gold daric of Darius I from the polymer commemoratives of the Islamic Republic, and very few interruptions break the chain. Surviving coins from almost every decade of those twenty-six centuries can be held in the hand. The timeline above sketches the major turning points; the paragraphs below explain how the periods connect.

From bullion to coin (8th–6th centuries BCE)

For most of human history precious metal circulated by weight rather than by face value, and Iran was no exception. The Median and pre-Achaemenid Iranian plateau used cut silver (hacksilber) measured against a shekel weight, much like the contemporary Levant. True coinage — that is, lumps of precious metal of standardised weight stamped with a guarantee of value by a political authority — was a Lydian invention of the mid-7th century BCE, reaching the Iranian world when Cyrus the Great conquered Lydia around 546 BCE. For the first generation under Persian rule the existing Lydian electrum and bimetallic gold-silver coinages continued unchanged; only with Darius I's reform around 515 did a truly imperial Persian coinage emerge.

The bimetallic standard (515 BCE – 224 CE)

The Achaemenid gold daric (~8.4 g) and silver siglos (~5.6 g) circulated for almost two centuries with very little change to their archer-king type. Alexander's conquest of 330 introduced Greek-weight tetradrachms across Iran but did not displace the Achaemenid coinages overnight — double-darics were struck under Macedonian satrapal authority for at least a generation. Under the Seleucids the Attic tetradrachm became the dominant denomination across the plateau, struck at Antioch, Seleucia, Ecbatana and Susa. When the Parthian Arsacids broke away from Seleucid rule from 247 BCE onward they retained the Attic standard but introduced a distinctive iconography: the diademed king on the obverse, the seated archer-Arsaces on the reverse, with Greek (later Aramaic-script) legends.

The Sasanian centuries (224–651 CE)

The Sasanian dynasty's defeat of the last Parthian king at Hormizdagan in 224 CE began a four-century run of remarkably stable silver coinage. The thin, broad drachm reformed by Khosrow I around 530 CE became the most numerous surviving silver coin of late antiquity. Every drachm gives the king's name, the regnal year and the mint city in Pahlavi script — making Sasanian coinage one of the most precisely datable corpora in the ancient world. Sasanian silver remained the dominant currency of the Iranian plateau and the eastern Caliphate even after the Arab conquest: Arab-Sasanian governors of Fars and Sistan continued to strike drachms in Khosrow II's style, with Arabic marginal legends added, until the Umayyad reform of 696.

The Islamic millennium (651–1736)

Caliph Abd al-Malik's coinage reform of AH 77 (696/697 CE) abolished figurative imagery in favour of pure Arabic epigraphy. The resulting dinar (gold, ~4.25 g) and dirham (silver, ~2.97 g) set the visual standard for Islamic coinage from Spain to Central Asia for the next thousand years. Iranian dynasties — Tahirid, Saffarid, Samanid, Buyid, Ghaznavid, Seljuq, Khwarazmshah — followed the standard while adding their own names beside the caliph's. The Mongol Ilkhanate and Timurid empires brought Central Asian mints into the system and introduced the silver tanga, ancestor of the Indian rupee and the Tajik somoni. The Safavid revival (1501) added Twelver Shi'a religious formulae to the obverse, in elegant Nastaʿlīq script, and made the silver abbasi the dominant circulating coin of Iran for two centuries.

The modern transition (1736–1932)

The eighteenth and nineteenth centuries saw two great changes. First, the introduction of machine-struck coinage: Nasir al-Din Shah Qajar imported British minting equipment in the 1870s and produced Iran's first milled toman and qiran. Second, the introduction of paper money: the 1889 banking concession to the Imperial Bank of Persia produced the first Iranian banknotes, issued from 1890 and redeemable only at the issuing branch. The two innovations together replaced an essentially medieval monetary system with a recognisably modern one over a single generation.

The Pahlavi rial and the Islamic Republic (1932–present)

Reza Shah's monetary reform of 1932 abolished the qiran, introduced the rial, and transferred the note-issuing privilege from the Imperial Bank to Bank Melli Iran. Bank Markazi took over in 1961 and remains the central bank. Mohammad Reza Shah's reign saw the most ambitious modern Iranian coin and banknote programmes — the 1971 Persepolis commemoratives, the full Pahlavi gold series, and a complete set of rial banknotes from 5 to 10,000. After 1979 the Islamic Republic overprinted, then replaced, the Pahlavi notes; from 1992 the portrait of Ayatollah Khomeini has appeared on every regular banknote. The toman redenomination of 2020 — removing four zeros and renaming the rial as the toman — is the latest chapter in a story that began with the gold of Darius.