 The wreck site, which is dated about 70–60 BC, also yielded the Antikythera Mechanism, an astronomical calculating device, a characterful head of a Stoic philosopher, and a hoard of coins.The coins included a disproportionate quantity of Pergamene cistophoric tetradrachms and Ephesian coins, leading scholars to surmise that it had begun its journey on the Ionian coast, perhaps at Ephesus; none of its recovered cargo has been identified as from mainland Greece.The "Ephebe", which measures 1.96 meters , slightly over lifesize, was retrieved in numerous fragments.