Watch List notes:

KINGS OF MACEDON. Perdikkas II, 451-413 BC. Diobol (Silver, 11 mm, 0.86 g), Aigai, 437/6-425/4. Bridled horse standing to right, tethered to ring. Rev. Quadripartite incuse square. AMNG III 9 (as Alexander I). Raymond, pl. XI d. SNG ANS 63. SNG Copenhagen 482. A very rare type. Porous surfaces, typical for small denominations of the period, otherwise, about very fine.