Alexander the Great signet coin ring Sterling SilverAlexander the Great, wearing the horn of Ammon as he became Pharaoh of Egypt. Alexander the Great signet coin ring Sterling SilverAncient Greek Coin Copy 6. 889 inch 17,5 mm Sterling Silver 925Alexander III of Macedon commonly known as Alexander the Great, was a king of the ancient Greek kingdom of Macedonia and succeeded his father Philip II to the throne at the age of twenty. He spent most of his ruling years on an unprecedented military campaign