Caracalla AE22 of Carrhae, Mesopotamia. 

Obv: AVT KAI M ANTWNEINOC, youthful, laureate head right
Rev: KAP KOL MHTROPOL, star in crescent, globe and serpent 
below.

Mionnet 5, 15; BMC 10 var.

Contributed by Dane for Eric Relph, June 2009