Watch List notes:

Kausambi Region, Allahabad. Vatsa Maha Janapada. AR karshapna (28.59 mm, 2.89 g). ABBC type. Struck 500-400 B.C. Pair of geomterical symbols with lines filled, Vatsa royal mark of scorpion, elephant / Bankers marks. Unpublished. VF. Extremely Rare.

This is one of the 16 Major Janapadas also called as Maha Janapadas. This is catalogued by Buddhists in Anaguttara Nikaya