EGYPT, Alexandria. Gallienus. AD 253-268. Potin Tetradrachm. Dated RY 3 (AD 255/6). A K Π ΛI OV ΓAΛΛIHNOC ЄV ЄV C, laureate, draped and cuirassed bust right / Eirene standing facing, head left, holding olive branch and scepter; L Γ (date) to left. 20 mm, 9.44 g.