Macedon, Chalkidian League, c. 421-420 BC. AR Tetrobol (14,5mm, 2.24g). Olynthos.Laureate head of Olynthos. R/ Kithara with seven strings; all within a shallow incuse square. Robinson & Clement Group D, 38 (A32/P23, same dies). Traité pl. CCCXIII, 10. Near extremely fine and extremely rare.