Achaios, Seleukid Kingdom, usurper, AR tetradrachm. 220-214 BC. 28 mm. Sardes mint. 

Diademed and draped bust right.
BASILEWS AXAIOY to right and left of Athena Promachos walking left, brandishing spear in right hand, shield on her left arm. 

Horse's head and neck left in inner left field, DI in inner right field.

Houghton SC 953.2; Houghton collection 608; Commerce tetradrachm hoard 76; GRPC Lydia S295 (this coin).