Caracalla, AE29 of Ankyra, Galatia. AD 198-217. 

ANTWNINOC AYGOYCTOC, laureate head right.
MHTROPOLEWC ANKYRAC, Athena standing left, holding spear and 
with right hand on a shield resting on an altar before her.

Arslan Galatia 118 (this coin); SNG von Aulock 8724.

Courtesy of Melih Arslan, from his book "The Coins of 
Galatian Kingdom and the Roman Coinage of Ancyra in Galatia", ISBN 975-512-856-5 (and worth every penny).