Antoninus Pius AE24 of Commagene, Samosata. 

Obv: AYTO KAI TI AIL ADPI ANTWNEINOC CEB EYC, laureate draped bust right  
Rev: F L CAMOCATEWN MHTPO KOM, goddess seated left on rock holding corn ears, 
 river god Euphrates swimming at her feet.

SGI 4991, BMC 26, SNG Copenhagen 19cf (same but only ~18mm).

24mm, 11 grams.

The KOM has got to be short for Commagene:
CAMOCATEWN MHTPO KOM = Samosata, the Commagenean Metropolis.


Contributed by Dane, January, 2004.