One such item will be on display when I attend the World Money Fair in Chicago, and is at the top of my "bucket list", coins I must see. It is known as the "Eid Mar", or Ides of March in English, there are around fifty specimens known.
As explained on the website:
This coin is one of the most historically significant of ancient coins, struck by Marcus Junius Brutus to commemorate the murder of Julius Caesar. The obverse has a portrait of Brutus while the reverse features a pileus (or freedom cap) between two daggers (representing Brutus and Cassius, the leaders of the assassins) with the inscription "EID MAR" (for the "Ides of March") below. Brutus and Cassius are portrayed as saviors of the Roman Republic. Courtesy of Michael Gasvoda.



