Watch List notes:

Litteratur
Numismatic Literature, India, Rajgor, D., Punch-marked coins of Early Historic India; Bopearachchi, O., Pieper, W., Ancient Indian Coins; Kothari, N., Ujjayini Coins; Gupta, P. L., Hardaker, T. R., Punchmarked Coinage of the Indian Subcontinent; Murphy, P., Kosala State Region; van't Haaff, A., Saurashtra, Surasena, Silver Punchmarked Coinage. (6)