Watch List notes:

KINGS of MACEDON. Perdikkas II. 451-413 BC. AR Tetrobol (13mm, 1.98 g, 1h). Aigai mint. Struck 437/6-435/4 BC. Horse trotting right; Π below / Crested helmet right within linear border within incuse square. Raymond 166 (same obv. die); SNG ANS 45-6 var. (no Π). VF, toned, scratches on both sides.