Watch List notes:

MACEDON. Potidaia. Circa 450-432 BC. Diobol (Silver, 10 mm, 1.26 g, 12 h). Horseman advancing right. Rev. Archaic female head right, within incuse square. Alexander Period IIB, a, 2. Cf. HGC 3, 648. Very rare. Lightly porous, otherwise, very fine.
From the collection of a scholar.