Achaiion or Achaeïum or Achaeum (Ancient Greek: Ἀχαίιον) was a town in the Tenedian Peraia of the ancient Troad.
[1][2] The legend AX (ACH) which some bronze coins found in this region bear is thought to refer to Ach(aiion) by Louis Robert,[3] but others attribute the coins to Achilleion.
[4] Its site is located near Hantepe, Asiatic Turkey.
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