Watch List notes:

KYRENAICA. Kyrene. Circa 500-480 BC. Hemiobol (Silver, 7.5 mm, 0.39 g), Attic standard. Silphium fruit. Rev. Four pointed star with a pellet at the center and in each angle; all within an incuse square. BMC 34. Rare. Attractively toned and well-struck. Nearly extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, ex Münzen und Medaillen FPL 505, November/December 1987, 102.