Watch List notes:

MYSIA. Lampsakos. Circa 500-450 BC. Obol (Silver, 11 mm, 0.77 g, 12 h). Janiform female head wearing double stephane and a single rosette earring. Rev. Head of Athena to left, wearing Corinthian helment; behind, Ξ; all within incuse square. Baldwin Group A, II, pl. V, 25. The obverse struck somewhat off center, otherwise, very fine.