Tetradrachm Thasos Type

The Thasian tetradrachm became the dominant trade coin across Thrace and the middle Danube basin from roughly the late third century BC onward, and Celtic tribes in the region began producing imitations so prolifically that the copies eventually outnumbered the Thasian originals in circulation. What started as close copies progressively abstracted — each generation of dies moving further from the prototype until the imagery became nearly unrecognizable, a process numismatists call "devolution." Göbl's classification system attempts to impose order on this sprawling series, but attribution to a specific tribe or workshop remains genuinely difficult for most specimens.