Caracalla, AE27 of Creteia-Flaviopolis in Bithynia. 

Obv: AY K M AYP ANTWNINOC, laureate, draped & cuirrased bust right 
Rev: KPHTIEWN FLAOVIO, Hermes standing left holding purse in right hand and a 
 caduceus in his left. 

BM: -, ANS 1944.100.42072 (Geta) var. 

This coin is known for Geta and Septimius Severus but not for Caracalla.

Contributed by Dane for George Clegg (biggyg2), October 2007