Watch List notes:

KINGS of MACEDON. Antigonos II Gonatas. 277/6-239 BC. AR Tetradrachm (29.5mm, 17.02 g, 7h). In the name and types of Alexander III. Amphipolis mint. Struck circa 277/6-275 BC. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in left field, monogram above crescent and monogram; monogram below throne. Price 615 corr. var. (position of left field monograms; different monogram below throne); Mathisen, Administrative, Group III, – (unlisted variety); Berlin Obj. Nr. 18252251 var. (monogram below throne; same obv. die). VF, lightly toned. Extremely rare.

From the Colin E. Pitchfork Collection, purchased from Classical Numismatic Group, 20 January 2003.