Diocletian (284-305). BI Tetradrachm, Alexandria mint, 290-291 AD. D/ Laureate head right. R/ Zeus standing front, head left, holding patera and sceptre; eagle to left; L-Z (date) across field. Dattari 5776; K &G 119.68. BI. g. 7.96 mm. 20.00 Deep brown patina, green hues. Good VF.