Watch List notes:

KINGS of MACEDON. Antigonos II Gonatas. 277/6-239 BC. AR Tetradrachm (28mm, 17.02 g, 5h). 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; monogram to inner left. Panagopoulou Period I, Group 41, 141 (O29/R134); HGC 3.1, 1042. VF, toned, light die rust on reverse. Very rare with monogram to inner left and no helmet, only 4 examples recorded by Panagopoulou, none in CoinArchives.

From the George Bernert Collection. Ex Classical Numismatic Group 67 (22 September 2004), lot 462.