Assertion: owl | /r/CapableOf | become after 510 bc
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text: The owl of Athena even became the common obverse of the Athenian tetradrachms after 510 BC and according to Philochorus, the Athenian tetradrachm was known as glaux (γλαύξ, little owl) throughout the ancient world and "owl" in present-day numismatics.