Watch List notes:

KINGS of MACEDON. Antigonos II Gonatas. 277/6-239 BC. AR Tetradrachm (31mm, 16.97 g, 11h). Amphipolis mint. Struck circa 271/68-260/55 BC. Horned head of Pan left, lagobolon behind, in the center of a Macedonian shield / Athena Alkidemos advancing left, shield decorated with aegis on left arm, preparing to cast thunderbolt; crested Macedonian helmet to inner left, HP monogram to inner right. TEA Period I, 66–7 var. (O6/R– [unlisted rev. die]); HGC 3, 1042. Bright surfaces. Good VF. Well centered and struck.