Macedonian shield with thunderbolt, monogram ΔHΡ of Demetrios in the central boss // Macedonian helmet between BA and ΣI, crescent in inner left field. 16mm, 4.49 grams. Pella mint. SNG Alpha Bank 962-963; Cf. SNG Copenhagen 1224-1228 (Demetrios II)

Demetrius I, also called Poliorcetes ("The Besieger"), was a Macedonian nobleman, military leader, and king of Macedon (294–288 BC). He belonged to the Antigonid dynasty and was its first member to rule Macedonia. He was the son of Antigonus I Monophthalmus and Stratonice.