BAKTRIA, Indo-Greek Kingdom. Menander I Soter. Circa 155-130 BC. AR Tetradrachm (26mm, 9.71 g, 12h). Diademed and draped bust right, wearing crested helmet adorned with bull's horn and ear / Athena Alkidemos advancing left; Σ and monogram flanking. Bopearachchi 15B; HGC 12, 182. VF, traces of deposits in devices, shallow pit on reverse.