eBay: HJB-Diocletian, Tetradrachm  
Diocletian, Tetradrachm 
284-305 AD, Tetradrachm, Egypt, Alexandria, Year 
  8=291/2 AD, 7.20g. Dattari-5642, Emmett-4032, 
  Geissen-3253. Rx: Athena std. l.