Watch List notes:

Kingdom of Macedon, Demetrios I Poliorketes AR Tetradrachm. Sicyon-Demetrias(?), circa 291-290 BC. Diademed and horned head to right / Poseidon, nude, standing to left, right foot propped on rock, holding trident and resting on leg; ΒΑ[Σ]ΙΛΕΩ[Σ] to right, ΔΗΜΗΤΡΙΟΥ to left, monogram within wreath to outer left, monogram within circle above cornucopiae between legs. Newell 155, pl. XVI, 10 (CLXI/[309(?)]); HGC 3.1, 1014h. 16.71g, 27mm, 12h.

Good Very Fine; die shift and scratches to rev. Extremely Rare; no other examples on CoinArchives.

From a private UK collection.