The same coin as the previous one, but in color. This picture, I find, is much more effective. This is an early prototype of the coinage of Athens that was minted with a similar image for 500 years until the end of the Hellenistic period. The reverse displays an owl, therefore these 'owls', hence "to carry owls to Athens". In the 5th century BC the Athenian tetradrachm became an international currency that circulated also throughout the Persian empire. Its image influenced coin design throughout the east with coins weighing from about 17 to a quarter of a gram.