Septimius Severus AE30 of Istros, Moesia. AD 193-211. 14.23 g. 

AYK L CEPTI CEYHROC P, laureate head right.
ICTRIHNWN, Mithras, bearded, wearing polos, riding right on horseback, raven on column to left, altar before.

Varbanov 619; AMNG 494. 

With permission of Naville Numismatics auction 18, Lot 153, 2015