Watch List notes:

ATTICA. Athens. Circa 500/490-485/0 BC. Obol (Silver, 9 mm, 0.53 g, 7 h). Head of Athena to right, wearing crested Attic helmet. Rev. AΘE Owl standing right, head facing; to left, olive sprig; all within incuse square. HGC 4, 1658. Seltman Group G. Rare and unusually well centered on a broad flan. Slightly granular, otherwise, good very fine.