Gallienus, AE of Pergamon, Mysia, Homonia with Ephesus. 19.26 g. 

AVT K P LIKI GALLIHNOC C, laureate, draped, cuirassed bust right.
EPI CEX KL CEILIANOY PERGAMHNWN KAI EFESIWN OMON, Asklepios,
holding serpent-entwined staff, standing facing beside Artemis 
Ephesia facing. 

Franke/Nollé 1592 corr. (this coin). SNG BN 2302. 

Courtesy of Helios Auction 5, June 2011