Dated Roman Egypt Alexandria billon tetradrachm, 6.96g, Emmett 4028/9 rated as R3 (does not reference the date error).
Minted in the 9th (L ENATOV) Alexandrian year for Diocletian which corresponds to 292/3 CE. Note that the date is presented retrograde as ENATOV L (L is reversed), a mint error!
Minted Workshop A (below ex. line).
Certified by NGC to Ch XF.
Reverse Athena standing left holding Nike and shield. Athena is the ancient Greek goddess of wisdom, handicraft, and warfare, who was later associated with the Roman goddess Minerva. Athena was regarded as the patron and protector of various cities across Greece, particularly the city of Athens.