Watch List notes:

Greek. MYSIA, Lampsakos (Circa 4th-3rd centuries BC) AR Diobol (11,7 mm, 1,35 g)
Obv: Diademed janiform female head, with circular earring.
Rev: ΛA-M Head of Athena to right, wearing Corinthian helmet; all within incuse square. Klein 273. SNG Paris 1177.