With the coming of coins, transactions became easier. The role played by the study of coins in recreating Indian archaeological history was great. On the early coins, there were no writings. There were only some signs on them. Such coins are called punch-marked coins. From many sites in the subcontinent, they have been found. Numismatists made use of these coins to learn more about the trade connections that existed among the nation in the ancient world.
The extensive use of gold coins indicates the high value of trade and transactions. It shows that trade was not limited to the bounds of a country. Although South India was not a part of the Roman Empire, there were close trade relations with them.
1. Tribal republics also issued coins. The thousands of copper coins issued by the Yadavas Of Punjab and Haryana in the 151 century AD prove this. It also shows the interest and participation shown by them in matters of trade and commerce.
2. The most beautiful gold coins were issued by the Guptas. Their gold coins were famous for their purity. These coins helped in making trade with distant countries easy.
