History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.s2.8
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.s2.8
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c15.s2.8
Kushan kings like Kanishka and his successors in the 2nd century A D, and by the Gupta kings of the following periods The earliest coins were punch-marked or stamped with a die. Subsequently, copper coins were evidently made by first casting molten copper in moulds so as to make them of uniform size and then striking between dies.