Gallienus, AE25 of Serdica, Thrace.

AVT K GALLIHNOC, Laureate, cuirassed bust right, seen from the back.
OVLPIAC CEPDIKHC, Zeus advancing right, brandishing 
thunderbolt and holding eagle.

Varbanov 2654.

Courtesy of Ed Flinn, www258.pair.com. May 2011.