Ancient Greek Alexander III Tetradrachm without chain

Alexander III, the Great, Silver Tetradrachm coin, circa 300BCE, in Sterling silver pendant. Obverse: Head of Herakles (Hercules) right, wearing lion skin headdress. Reverse: Zeus enthroned left, holding eagle and scepter; QA ligate (joined together), “AΛEXANΔΡOY” vertically and behind chair to the right. Certificate of Authenticity. Dimensions; 1-1/8" wide, 1-1/2" drop, including bail.  Chain sold separately. Alexander III succeeded his father, Philip II, on the Macedonian throne. In a reign of only thirteen years he was able to accomplish military feats that stand unequaled to this day. By B. C. 330 he was already the acknowledged leader of an empire that covered a million square miles. Alexander was more than a military genius. He had studied as a pupil of Aristotle and was familiar not only with strategy and tactics, but mathematics and philosophy, art, literature and theater. At his untimely death at the age of thirty-two, he was King of the Greeks, Pharaoh of Egypt, ruler of Pers