Kingdom of Macedon, Demetrios Poliorketes (294-288 B.C.), Tetradrachm, 16.93g., Amphipolis c.292/291 B.C., diademed head right, with bull's horn, rev. Poseidon seated left on rocks, holding aplustre and trident, monograms to left and right (Newell 106), about very fine
Kingdom of Macedon, Demetrios Poliorketes (294-288 B.C.), Tetradrachm, 16.93g., Amphipolis c.292/291 B.C., diademed head right, with bull's horn, rev. Poseidon seated left on rocks, holding aplustre and trident, monograms to left and right (Newell 106), about very fine

Details
Kingdom of Macedon, Demetrios Poliorketes (294-288 B.C.), Tetradrachm, 16.93g., Amphipolis c.292/291 B.C., diademed head right, with bull's horn, rev. Poseidon seated left on rocks, holding aplustre and trident, monograms to left and right (Newell 106), about very fine