Unpublished Sasanian Coins Preserved in the Bangladesh National Museum: Unveiling with Identification and Exploring the Cause-Period of Their Arrival in Bengal

The Sasanians were the last pre-Islamic Persian dynasty that ruled present-day Iran and its neighbouring extensive territories, succeeding the Parthians from 224 A.D to 651 A.D. It was the second-longest reigning Persian imperial dynasty, enduring over four centuries until the Muslims defeated the last Sasanian Emperor, Yazdegerd III. Six unpublished coins of this dynasty stored among the rich collections of nearly fifty-eight thousand manifold coins of the Bangladesh National Museum are matter of surprise and curiosity because Bengal was neither a part of their Empire nor ever ruled by them. These coins were discovered in Bengal in the early twentieth century. They have been identified recently, although they were unidentified for a long time following collection. Typically, coin from one region found in another conveys a trading identity. The early Arabs used Sasanian coins along with other coins as currency before introducing their purely Arabic coins in 696 A.D. They were traditionally traders and had commercial contacts with South and Southeast Asia since the seventh century. They might have used these unpublished coins in the seventh century as a means of exchange in Bengal because the region was well-heeled in ancient times and drew traders from all over the world. This article has unveiled these hitherto unpublished coins with their identification and conducted a comprehensive numismatic endeavour virtually to give insight into the inferential cause as well as the timeframe of their arrival in Bengal.