Diocletian Billon Tetradrachm, Egypt, Alexandria. 

Obv: A K GOYA DIOKLHTIANOC CEB, laureate cuirassed bust right 
Rev: ETOVC to left, Tyche standing left holding rudder and cornucopiae, star 
 to right. Year mark G. 

19 mm. Milne 4840

Contributed by Dane for George Clegg (biggyg2), April, 2008.