For more on this interpretation see, Wieshöfer, J., 2003, 'Tarkumuwa und das Farnah', in Henkelman & Kuhrt (eds.), 'A Persian Perspective': 174-185.
BRINDLEY, JAMES C. “Early Coinages Attributable to Issus.” The Numismatic Chronicle (1966-), vol. 153, 1993, pp. 1–10.
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