Watch List notes:

ATTICA. Athens. Circa 454-404 BC. Hemiobol (Silver, 7.5 mm, 0.31 g, 9 h). Helmeted head of Athena to right. Rev. AΘE Owl standing to right, head facing the viewer; to left, olive sprig and crescent moon; all within incuse square. HGC 4, 1681. Kroll 14. SNG Copenhagen 59-61. Porous, otherwise, nearly very fine.
From the collection of a scholar.