Kallatis Imperial, AE19. Philip II ?

Obv: unclear legend, bare head right 
Rev: KALLAT-IANWN vertically to right and left of helmeted Athena 
standing left, holding spear in left hand, Nike in right hand, 
shield at feet.
(If I am misreading the rev. legend, I would appreciate a notification)

Contributed by Dane, December, 2005.
(Dane's collection number DK A261)