Reserve Bank of India (RBI) Currency Museum

Kushan

Earliest Kushan coinage is generally attributed to Vima Kadphises. The Kushan coins generally depicted iconographic forms drawn from Greek, Mesopotamian, Zorastrian and Indian mythology. Siva, Buddha and Kartikeya were the major Indian deities portrayed. Kushan gold coins influenced subsequent issues, notably those of the Guptas.

...

Gupta

Gupta coinage (4th-6th centuries AD) followed the tradition of the Kushans, depicting the king on the obverse and a deity on the reverse; the deities were Indian and the legends were in Brahmi. The earliest Gupta coins are attributed to Samudragupta, Chandragupta II and Kumaragupta and their coins often commemorate dynastic succession as well as significant socio-political events, like marriage alliances, the horse sacrifice, etc (King and queen type of coin of Chandragupta 1, Asvamedha type, etc.), or for that matter artistic and personal accomplishments of royal members (Lyrist, Archer, Lion-slayer etc.).