Watch List notes:

MYSIA, Lampsakos. Circa 500-450 BC. AR Obol (10.5mm, 0.86 g, 9h). Janiform female heads / Helmeted head of Athena left; to right, serpent(?) coiled right; all within incuse square. Baldwin, Lampsakos, Group A, II, pl. V, 24 var. (no symbol on rev.); SNG BN 1128 var. (same); CNG E-449, lot 117. Toned, slightly granular surfaces, a bit off center on obverse. VF. Very rare with this symbol.