Pre-Mauryan punchmarked coins (c.600-320 BC) drachm 200-100 v. Chr. Scarce post-Mauryan silver ca.200-100 BC (G/H #600)

Five punch-mark symbols (see above) / Blank. Irregular flat silver planchet, 15mmx13mm, 2.78 grams. Gupta/Hardaker (2014) #600 (p.190). 

These coins, minted in some sort of brassy-silver alloy and in light weight, usually imitate G/H 573-575. They are found in the Northwestern Indian subcontinent area, ranging from Haryana to Afghanistan. They were probably minted after the demise of the Mauryans, possibly under Sungas.