Gallienus (253-268).     BI Tetradrachm, Alexandria mint (Egypt), dated RY 12 (264/5).   Obv.    ΑΥΤ Κ Π ΛΙΚ ΓΑΛΛΙΗΝΟϹ ϹΕΒ. Laureate, and cuirassed bust right.        Rev.   Homonoia seated left, raising right arm and holding double cornucopia; to right, palm; L ΙB (date) across field.     BMC 2190; SNG Cop. 782; RPC X online - (unassigned; ID 75514).     8.70 g.   22.70 mm.          Good VF.