BAKTRIA, Greco-Baktrian Kingdom. Antimachos I, circa 180-165 BC. Tetradrachm (Silver, 32 mm, 16.91 g, 12 h), Baktra. Diademed and draped bust of Antimachos I to right, wearing flat topped kausia. Rev. ΒΑΣΙΛΕΩΣ ΘΕΟΥ - ΑΝΤΙΜΑΧΟΥ Poseidon, nude to the waist, standing facing, holding long trident in his right hand and filleted palm branch in his left; to lower right, monogram. Bopearachchi 1A. HGC 12, 106. MIG 12f. SNG ANS 274-275. Well struck on a full flan. Light porosity on the reverse, otherwise, extremely fine.