While researchers say that the coins date back to the third or fourth century A.C.E, they don’t believe that the coins were ever actually in circulation. http://boredomtherapy.com/roman-coi...dl12|sec1_lnk3&pLid=-372617022_htmlws-main-bb
Ahem, ancient guys have no problem with cleaning coins. It's us anal retentive US collectors that do.......