Mantharanj Cheral [330-380 AD] found in Allahabad inscriptions of Samudragupta.  T he archaeological excavations undertaken in Karu r . These include mat-designed pottery, bricks, mud-toys,  Roman  coins, Chera Coins,  Pallava  Coins, Roman Amphorae , Rasset coated ware, rare rings, etc.  Karur may have been the center for old jewellery-making and gem