Ancient Greek silver Tetradrachm minted 126-125 BC in Athens.
Obverse: Bust of Athena, Goddess of Wisdom.
Reverse: Owl with olive leaves.
Custom mounted into a sterling silver bezel pendant with 14k yellow gold prongs and bail, measuring approximately 1.5 inches from the top of the bail to the bottom of the bezel, 1.25 inches across.
Sprung fully grown from Zeus, the patroness of Athens was awarded the city after bestowing the olive tree upon mankind. Her sacred animal the owl helped Athena keep watch over mankind and eventually became a symbol of wisdom.