Alexander the Great Tetradrachm 221 BC Ancient Greek Silver CoinObverse: Head of the Greek god Heracles (Hercules) wearing lion skin headdress Reverse: Zeus (king of the gods) seated on his throne with eagle perched on his hand Date: c. 221 220 B. C., Perge mint Reference: Price 2915 Composition: Silver Size: 26. 5mm diameter, 16. 65g weight In 336 B. C., Alexander ascended to the throne of the small kingdom of Macedon in Greece. Less than a decade later, he had conquered half of the known world, building an