The product is a rare authentic Indian coin from the Assam kingdom, specifically from the Gaurinath Simha Octagonal Rupee minted in 1705 This silver coin has a purity of 0.959 fineness and a matte strike type. It is uncertified but holds value for collectors due to its rarity and historical significance. The coin is a unique piece of North East Indian numismatic history, making it a valuable addition to any coin collection.