Macedonian Kingdom, Demetrios Poliorketes AR Tetradrachm. Amphipolis mint, ca 292-291 BC. Diademed & horned head of Demetrios right / <font face="SYMBOL">DHMHTRIOU</font> right, <font face="SYMBOL">BASILEWS</font> left, Poseidon seated left on rock, holding aplustre in right hand, trident in right hand; monogram inner left, monogram outer right.