Sasanian gold dinars—primarily prestige/ceremonial issues rather than mass circulation—are attested from Ardašīr I onward, generally in a 7.0–7.4 g range through Šāpūr III. The dinar’s role underscores elite gifting, diplomacy, and state display alongside the silver-based monetary economy.
The inherited billon tetradrachm tradition (linked to earlier Arsacid practice) and some fractional silver issues did not remain central for the whole dynasty: production of the tetradrachm and half-drachm ceased by the reign of Bahrām II (274–293), while the one-sixth drachm (dāng) continued longer but became increasingly token-like before ending under Kawād I.
A major technical innovation of early Sasanian minting was the adoption of thin, broad flans cut from rolled sheet metal. This allowed drachms to keep an Attic-weight standard (around 4.1 g) while increasing diameter, helping make legends and iconography more visible and standardized across issues.
By Kawād I’s second reign (beginning 498/499), Sasanian silver issues increasingly display abbreviated mint signatures and regnal-year dates in Pahlavi, enabling year-by-year reconstruction of mint activity for much of the 6th–7th centuries and reflecting tighter fiscal-administrative practice.
During Kawād I’s second reign, new iconographic conventions became widespread on drachms—most notably star-and-crescent astral symbols added in specific positions around the obverse (and later expanded). These motifs became a hallmark of later Sasanian silver types and are important for typology and chronology.
Numismatic evidence from Kawād I’s second reign attests a large and growing mint network (dozens of mint abbreviations, some possibly duplicative), with certain mints dominating output in particular regnal years—evidence for both administrative reach and the use of coinage to mobilize resources across regions.
Under Kawād I, silver fractional denominations (earlier a regular part of the system) cease to be struck in routine fashion; the last clearly dated specimens fall late in his reign. This left the silver drachm ever more dominant as the primary monetary instrument.
Khusro II’s drachms widely carry the Pahlavi legend “pzwt GDH” (commonly rendered as “May the royal glory increase”) alongside the king’s name, a formula that became one of the most recognizable late Sasanian coin inscriptions and signals how coin legends served as repeated ideological messaging.
Across the Sasanian period, the silver drachm functioned as the empire’s principal monetary unit for payment, taxation, and long-distance circulation, while gold was struck in comparatively small quantities and copper played a limited role—helping explain why drachms dominate the surviving monetary record.
Under Yazdegerd III (632–651), Sasanian-style silver drachms continue with the standard reverse of the fire altar with attendants, and—with many issues—retain the late practice of indicating regnal year and mint abbreviation, preserving an administrative “paper trail” even as the empire faced conquest.
After the Arab conquests, many Iranian mints continued striking drachms in the Sasanian style; early Arab-Sasanian issues often add brief Arabic phrases (e.g., bism Allāh) while maintaining Pahlavi elements, demonstrating substantial continuity of mint personnel, technique, and monetary practice beyond 651.
Early Sasanian coinage reform under Ardašīr I raised the silver drachm standard (to about 4.2 g), regularized silver fractions (hemidrachm and obol), and introduced a prestige-oriented gold dinar alongside continued billon tetradrachms and heavier copper issues—setting core denominational patterns for the dynasty.
Sasanian Coinage, Mints, and Monetary Policy (c. 224–651)
