Coins of Indus Valley Civilization
The Indus valley civilisation of Mohenjo-Daro and Harappa dates back between 2500 BC and 1750 BC. There, however, is no consensus on whether the seals excavated from the sites were in fact coins. The first documented coinage is deemed to start with ‘Punch Marked’ coins issued between the 7th-6th century BC and 1stcentury AD. These coins are called ‘punch-marked’ coins because of their manufacturing technique. Mostly made of silver, these bear symbols, each of which was punched on the coin with a separate punch.