Kings of Macedon, Demetrios I Poliorketes (306-283 BC). AR Tetradrachm (29mm, 16.96g, 11h). Uncertain mint. Diademed and horned head r. R/ Poseidon Pelagaios standing l., r. foot on rock, holding trident; control to inner r. HGC 3.1, 1014. Large test-cut, VF