Amastris, Paphlagonia, AE26, semi-autonomous issue, AD 193-217.

OMHROC, diademed, draped and bearded bust of Homer right.
AMACTRIANWN, Athena seated left, holding spear, right hand raised to her face, shield behind her.

Unpublished obv/rev combination. Waddell 1, 77. RecGen 136 var (this reverse with Julia Domna on obverse; BMC 33 var (ditto). 

Image is from the Waddell auction 1 catalogue, lot 77.