Watch List notes:

Macedon, Chalkidian League. Ca. 432-348 B.C. AR tetrobol (15 mm, 2.32 g, 6 h). Olynthos mint, Struck ca. 427-421 B.C. Laureate head of Apollo left; Δ behind / X-A-Λ-KIΔ-E-ΩN, kithara within incuse square. Robinson & Clement grp. C; SNG ANS 516-8. aVF.