Silver  → Photo of Tetradrachm of Heracles     Wikimedia Page: http://commons.wikimedia.org/wiki/File:Tetradrachm_of_Heracles.jpg Summary Description Silver tetradrachm with the head of Heracles. Alexander III of Macedon , Pella , 315-305 BC. Date 13 September 2007 ( 2007-09-13 ) Source Own work Author One dead president , David Liam Moran Licensing I, the copyright