HIMALAYAN foothills in the north to central India in the south-WEST and from Ravi River in the west to the Brahmaputra River in the east.He performed the Ashvamedha sacrifice to prove his imperial sovereignty.According to his coins, he remained undefeated.Initially, The coinage of the Gupta Empire was derived from the coinage of the Kushan Empire.The Guptas adopted from the Kushans the name of Dinara for their coinage. The FOLLOWING types of Samudragupta's coins, inscribed with Sanskrit LANGUAGE legends, have been DISCOVERED areStandard typeArcher typeTiger-slayer typeBattle-axe typeLyrist typeAshvamedha type