This authentic ancient Greek silver triobol, struck circa 167–160 BC, features Athena, goddess of wisdom and warfare and daughter of Zeus. 
Athena is shown wearing a Corinthian helmet, symbolizing strategy, intellect, and protection.
The reverse displays a sheathed sword, representing controlled strength and disciplined power. 
Once a circulating coin of the Hellenistic world, it has been preserved and transformed into a wearable pendant that bridges antiquity and modern design.