Matloubkari, Esmaeil. 2024. Sasanian Coin Legends: A Linguistic Approach to Historical Analysis. Tehran: Negah-e Moaser.

Epigraphic sources and historical texts indicate that the political ideology of the Sasanians underwent significant transformations over time. If we consider Sasanian coins as the most important—and sometimes the only—expressions of Sasanian kingship ideology, then the linguistic study of coin legends becomes a key method for understanding the socio-political significance of these titles.
The titles inscribed on Sasanian coins during the 3rd and 4th centuries AD appear to have been rooted in native traditions, either imitated and reconstructed by the Sasanians or influenced by external traditions transmitted through the Parthians, Hellenistic states, and Kushans. The formalization of Zoroastrianism as the state religion in the 4th century AD led to Middle Persian becoming the sole official language, resulting in the gradual removal of non-native titles from Sasanian coinage. Nevertheless, such titles continued to exist in a localized form within the political sphere and the propaganda of the Sasanian government.
Lexical analysis suggests that most of the titles and honorifics found on Sasanian coins originated from religious contexts, often adapted—with modifications—from Old or Middle Iranian texts. From the 5th to the 7th century, these titles increasingly reflected Zoroastrian religious traditions while also showing traces of the ancient Iranian bureaucratic system. The titulature found on Sasanian coins and inscriptions was a crucial instrument for legitimizing Sasanian kingship, and changes in these titles provide valuable insights into the evolution of political thought during the Sasanian era.
Given the scarcity of contemporary Sasanian texts, coin legends remain among the few available sources that reference the “King of Kings,” the court, and the state. By examining the etymology of these terms in Old and Middle Iranian texts, historians can gain a deeper understanding of their meanings, thereby shedding light on the socio-political structures of the Sasanian period.