Denarius

The Eravisci were a Celtic tribe settled in Pannonia, in the region of modern Budapest, whose coinage is a rare case of a non-Roman people deliberately imitating Roman Republican denarii with enough precision to pass in trade. Their silver issues copy specific Roman types so closely that misattribution remained common well into the twentieth century. The tribal name itself appears on some issues — an unusual concession to local identity within what is otherwise near-total visual assimilation to Roman monetary convention.

By the late first century BC, Roman commercial and military penetration of the middle Danube had made the denarius the region's de facto trade currency.