BAKTRIA, Greco-Baktrian Kingdom. Heliokles Dikaios. Circa 145-130 BC. AR Tetradrachm (33mm, 16.93 g, 12h). Diademed and draped bust right / Zeus standing facing, holding thunderbolt and scepter; monogram to inner left. Bopearachchi 1H; HGC 12, 169. Light porosity, struck with worn dies. VF.