The geography of Persian coinage — fifteen cities that struck the daric, the Sasanian drachm, the Abbasid dinar, the Safavid abbasi and the modern toman. Most mints operated under successive dynasties, leaving a layered numismatic record.
Birthplace of the daric and siglos and the primary Achaemenid mint for archer-type coinage. Continued as a major Hellenistic and Roman mint after Alexander.
Median capital and Achaemenid summer residence. Mint mark 'HMD' appears on Parthian drachms; later one of the most active Islamic mints of western Iran.
Ceremonial heartland. After Alexander, the local Frataraka and Persis dynasties struck silver drachms here, retaining Persian iconography (fire altar, archer) under Hellenistic influence.
Achaemenid administrative capital; later an Elymaean mint producing distinctive bronze tetradrachms with frontal portraits.
Greek foundation of Seleucus I; the principal mint of Parthian tetradrachms, dated by Seleucid Era.
Sasanian winter capital. Coins from the mint signature 'WH' / 'ḤRY' likely belong here; central to the high-volume drachm output of Khosrow I and II.
Eastern frontier mint. A major Sasanian centre (signature 'MY') and later a Samanid silver-mining capital before the Mongol destruction of 1221.
Heart of the Samanid silver-dirham economy whose coins reached Viking-age Russia and Scandinavia in vast numbers.
Twin Samanid capitals; the gold coinage of Bukhara set the trans-Asian standard for two centuries.
Abbasid caliphal capital. The reformed dinar and dirham of Harun al-Rashid set the standard imitated across the Islamic world.
Major Parthian and Sasanian mint ('RY' signature) destroyed by the Mongols in 1220; eventually overshadowed by neighbouring Tehran.
Ilkhanid capital and the principal Safavid mint under Shah Ismail. Continued producing crown-prince coinage under the Qajars.
Safavid capital from 1598; the principal Safavid mint of the abbasi and shahi denominations. Continued through the Afsharid and Qajar periods.
Sacred to Shi'a Islam as the shrine of Imam Reza. Nader Shah crowned himself here and struck coins from the city's mint to fund his Indian campaign.
Capital from Agha Mohammad Khan onward. The Imperial Mint produced Nasir al-Din Shah's reformed toman and every modern Iranian coin since.
The mint signature on an Iranian coin is the most compressed single document in monetary history: one to four characters that name the city — and sometimes the workshop — where the piece was struck. Learning to read these marks is the key to most Iranian numismatic collections. Achaemenid coinage carries none — Sardis darics and sigloi are unsigned, and attribution rests on type, weight and archaeological find-spot. Parthian silver tetradrachms from Seleucia carry Seleucid-era dates but rarely name the city; drachms carry a workshop monogram under the seated archer, with Ecbatana (HMD), Rhagae (RY) and Merv (MY) among the best-attested.
The decisive innovation came under the Sasanians. Khosrow I's reform of the 530s codified a layout in which every thin silver drachm carries three pieces of information around the fire-altar reverse: the abbreviated Pahlavi mint name to the left, the regnal year in numerals to the right, and the king's name and titulature on the obverse. Because of this, the drachms of Khosrow II alone yield a map of imperial economic activity covering roughly thirty cities, from Merv to Ctesiphon to Kerman.
Abd al-Malik's reform of 77 AH wrote the mint city out openly in Arabic: "Duriba hadha'l-dirham bi'l-Kufa sanata sab' wa sab'in" — "this dirham was struck at Kufa in the year seventy-seven". This pattern was kept by every Iranian Islamic dynasty: Tahirids, Samanids, Buyids, Seljuqs, Khwarazmshahs, Ilkhanids, Safavids, Afsharids, Zands, Qajars. The consequence is that Iranian Islamic coins are almost always precisely attributable — the city and the AH year are on the coin itself, in legible epigraphic Kufic, naskh or nastaliq.
Under Nasir al-Din Shah Qajar, the mint signature underwent a technological transformation. With the arrival of British machine-struck dies from Birmingham in 1290 AH, the Tehran mint became the centre of national coin production and the provincial mints closed one by one. On machine-struck tomans the legend reads simply zarb-e Tehran ("struck at Tehran") or just Tehran, identical on every coin. After 1932 every Iranian rial coin has been struck only at Tehran — twenty-five centuries of mint geography compressed into a single building.
To read an unattributed coin, check fabric and weight first — a thin silver disk of about 4 g is very likely Sasanian or early Islamic. Then check the script: Pahlavi, Kufic or naskh. Finally look in the margin for a city name. Diler's Islamic Mints and Stephen Album's Checklist of Islamic Coins are the two indispensable pocket references and make reading these signatures considerably easier than it appears at first glance.