Perseus of Macedon was the last Greek king of ancient Greece before it came under Roman rule following defeat in the Battle ...

Eucratides was a Greek king of Bactria in the 2nd century BC, and one of his coins, a silver tetradrachm, is represented in the center of the seal. The idea was to use the coin to improve ...

The silver tetradrachm, bearing an Athenian owl, was first minted from around 510 BCE. (oversnap/iStock/Getty Images Plus) Lead as a byproduct of human activity first emerges in the archaeological ...