Caracalla, AE24 of Sikyon, Sikyonia. AD 198-217. 8.76 g. 

Laureate, draped, and cuirassed bust right.
CIKYNIWN, emperor on horseback right, about to spear an enemy. 

Unpublished reverse for Caracalla. BCD Peloponnesos 357 var (this 
reverse for Sept. Severus); CNG 369, 377.

With permission of cngcoins.com, Feb 2016.