Macedon, Akanthos, c. 500-470 BC. AR Diobol (11,2mm, 1.00g). Head of Athena to right, wearing a crested Attic helmet and with slight drapery around her neck. R/ Quadripartite incuse square. HGC 3, I, 389. SNG ANS 24-26. Tsekelas Group B, D34h (O D27/R D29, this coin). Good VF and extremely rare.