Many punch-mark symbols (see below) / A single punch-mark. Irregular flat silver planchet (15mm, 3.4g). Gupta/Hardaker ISPC V XIV A 21 (#510-515 var).The regular punchmark depicting tree-in-railing is depicted on this coin surrounded by a number of symmetric dots - this punchmark is unpublished anywhere in standard references. Interesting and unique.The Mauryan Empire was India's first great unified empire. It lasted from 321 to 185 BCE, and was ruled by the Mauryan dynasty. At its height it ruled virtually all of northern and central India and parts of Afghanistan and Pakistan.