Watch List notes:

KINGS of MACEDON. Antigonos I Monophthalmos. As king, 306/5-301 BC. Æ Unit (15mm, 12h). Salamis mint. Struck under Demetrios I Poliorketes. Macedonian shield, boss decorated with facing gorgoneion / Macedonian helmet; kerykeion and monogram to lower left and right. Price 3159 (c. 323-315 BC); Zapiti & Michaelidou 7–8. Dark brown patina. In NGC encapsulation 5872733-109, graded VF.

From the Robert W. Bartlett Bequest Sold for the Benefit of the American Numismatic Society.