Watch List notes:

KINGS of MACEDON. Antigonos II Gonatas. 277/6-239 BC. AR Tetradrachm (30mm, 17.13 g, 9h). Amphipolis mint. Struck circa 246/5-229 BC. Horned head of Pan left, lagobolon over shoulder, on boss of Macedonian shield / Athena Alkidemos advancing left, holding shield decorated with aegis, preparing to cast thunderbolt; crested Macedonian helmet to inner left, KT to inner right. Panagopoulou Period III, 80h (O13/R75; this coin); HGC 3, 1042. Well struck in sound metal, lightly toned. In NGC encapsulation 5872733-035, graded Ch XF★, Strike: 5/5, Surface: 4/5, Fine Style.

From the Robert W. Bartlett Bequest Sold for the Benefit of the American Numismatic Society, purchased from Olympic Coins, Lincoln, NE, February 1982. Ex Glendining (5 November 1980) lot 23.