Watch List notes:

Macedonian Kingdom. Alexander I. 498-454 B.C. AR tetrobol (15.20 mm, 1.86 g, 3 h). Aigai mint, ca. 476/5-460 B.C. Horse stepping right / Helmeted head right in linear square within incuse square. Raymond Group II; HGC 3.1, 773. aVF, obv slightly off center.