BAKTRIA, Greco-Baktrian Kingdom. Antimachos I. Circa 180-165 BC. AR Tetradrachm (31mm, 16.84 g, 12h). Diademed and draped bust right, wearing kausia / Poseidon standing facing, holding trident and filleted palm frond; monogram to inner right. Bopearachchi Série 1A; SNG ANS 274. EF, minor surface marks.