Produced in the Western part of Achaemenid Empire, the Gold Daric was named for Darius I, king of Persia from 521 to 486 BC. The Gold Daric and Silver Siglos, or shekel became the main coins of the Persian Empire. The obverse of these coins are described is various ways: hero king, great king or archer running or knelling. Production the Gold Daric continued well beyond the end of the reign of Darius I. The end of their production came not long after the Persian Empire was conquered by Alexander the Great and his Armies towards the end of the 4th Century BC.