Caracalla, Istros, AE30, 5 Assaria. 

AVT K M AVR CEVHROS ANTWNION-OS, laureate head right.
ICTR-I-HNWN, Mitras on horseback right, small altar before
 horse's raised front foot, bird perched on long torch 
behind. 

E in exergue.

Ref: Moushmov 176; Varbanov (Engl.) 641. Rare.

Contributed by Paul Giba, November 2009.