Indo-Sassanian silver drachm coins represent a significant numismatic tradition from the post-Gupta period in India, spanning roughly the 6th to 12th centuries CE. These coins are heavily influenced by the earlier Sasanian Empire’s silver drachm designs, which were introduced to the Indian subcontinent by the Alchon Huns around the 5th century CE as they invaded northern India.

The Indo-Sassanian coins typically feature geometric and stylized portraits of Sasanian kings on the obverse, often simplified to the point of abstraction. The reverse commonly showcases a stylized fire altar motif, sometimes with attendant figures, motifs derived from traditional Sasanian coinage. These coins were usually made of silver, weighed about 3.5 to 4 grams, and measured approximately 25 to 30 mm in diameter.

The design of the coins progressively degraded and became more geometric over time, varying by geographic region within western and northwestern India, including Gujarat, Rajasthan, and the Gangetic plains. Indo-Sassanian coinage was issued by regional powers succeeding the Gupta Empire, such as the Rashtrakuta, Chaulukya, and Palas dynasties. The coins played an important role in sustaining trade and economic continuity during a period of political fragmentation.

Indo-Sassanian coinage thus served as an important medium mixing Iranian, Central Asian, and Indian artistic and cultural elements, reflecting the complex political and cultural landscape of medieval India.

In summary, Indo-Sassanian silver drachm coins were medieval Indian coinage inspired by Sasanian prototypes, marked by geometric royal busts and fire altar motifs, and used widely across Western and Northern India from the 6th to 12th centuries CE.