Kotiaion, Phrygia AE24, Archon Diogenes Dionysiou, Time of Gallienus, 253-268 AD.

Obv: DHMOC KOTIAEWN, unbearded, diademed, draped bust of Demos right.
Rev: EPI DIOGENOU-DIONYCIOY, AP/X (in field right), KOTIAEWN 
in ex., Zeus Aetophorus seated left, holding eagle and 
sceptre.

SNG Munich 318

Courtesy of Lars Rutten of Forvm Ancient Coins, Oct. 2010.