BAKTRIA. Kingdom of Baktria. Heliocles I, ca. 145-130 B.C. AR Tetradrachm (16.92 gms).Bopearachchi-12U. Diademed and draped bust of Heliocles I facing right; Reverse: Zeus standing facing, holding thunderbolt and scepter, monogram to left. Good strike details on a broad flan.NGC Ch EF, Strike: 5/5 Surface: 3/5.