Watch List notes:

KINGS of MACEDON. Antigonos II Gonatas. 277/6-239 BC. AR Tetradrachm (32mm, 17.00 g, 7h). Amphipolis mint. Struck circa 274/1-260/55 BC. Horned head of Pan left, lagobolon over shoulder, in the center of a Macedonian shield / Athena Alkidemos advancing left, holding shield decorated with aegis, preparing to cast thunderbolt; crested Macedonian helmet to inner left, monogram to inner right. Panagopoulou Period I, Group 23, 83 (O17/R80); Touratsoglou –; SNG Alpha Bank –; SNG München –; SNG Saroglos –; ANS inv. 1944.100.13842 (same dies). VF, toned, double struck, some porosity, a few light marks, flan flaw on reverse. Very rare with this monogram, only three examples noted by Panagopoulou, one in CoinArchives (CNG E-171, lot 25).