BAKTRIA, Greco-Baktrian Kingdom. Heliokles Dikaios. Circa 145-130 BC. AR Tetradrachm (30mm, 14.62 g, 12h). Diademed, draped, and cuirassed bust right, wearing crested helmet covered with pelt of scales and adorned with head of Gorgon and wing / Zeus enthroned left, holding Nike and scepter; M to left. Bopearachchi 3A; HGC 12, 170; SNG ANS –. VF, toned, porous.