Gallienus, AE of Pergamon, Mysia, Homonia with Ephesus. 14.13 g. 

AVT K P LIK GALLIHNOC, laureate head right, draped left shoulder.
EP C KL CEILIANOY PERGAMHNWN EFESIWN OMONIA, Asklepios,
holding serpent-entwined staff, standing facing on right, beside Artemis Ephesia facing, on left

Franke/Nollé 1620. (this coin); SNG BN 2303. 

Courtesy of Helios Auction 5, June 2011