CNG on ebay - Baktria. Heliokles I. AR Tet. Nice VF. $362.00 10/20/99, Seller cngcoins Baktria, Indo-Greek Kings. Heliokles I. Circa 145-130 BC. AR Tetradrachm (16.54 gm). Balkh mint? Diademed bust / Zeus holding thunderbolt and sceptre; monogram. MIG 284a; Bopearachchi Série 1M. VF, nice high-relief portrait. 716350. Heliokles I, son of the great Eukratides, seems to have been the last Greek king of Baktria north of the Hindu Kush. Heliokles might have been the murderer of Eukratides, as mentioned by the historian Justin, but this parricide could also have been Eukratides II or Plato, who appear to have been brothers of Heliokles.