Diocletian, Potin Tetradrachm, Alexandria, Egypt. Year 2 = 285-286 AD. 

Obv: A K GOYA DIOKLHTIANOC CEB, laureate & cuirassed bust right 
Rev: Dikaiosyne (Aequitas) standing left, holding scales 
and cornucopiae. 
L-B across fields.

Emmett 4033, Milne 4769

Contributed by Russell Stanley, July 2011.