Gallienus (253-268).     BI Tetradrachm, Alexandria mint (Egypt), dated RY 13 (265/6).   Obv.    ΑΥΤ Κ Π ΛΙΚ ΓΑΛΛΙΗΝΟϹ ϹΕΒ. Laureate, draped and cuirassed bust right.        Rev.   Eirene standing left, holding olive branch and sceptre; to right, palm; L ΙΓ (date) across field.     BMC 3299-3300; SNG Cop. 786; RPC X online - (unassigned; ID 75526).     9.45 g.   22.40 mm.          Good VF.