Watch List notes:

LESBOS, Methymna. Circa 500/480-460 BC. AR Hemiobol (6mm, 0.24 g). Attic standard. Facing head of Silenos / Quadripartite incuse square. Franke, Münzprägung –; cf. HGC 6, 894–5 (with iconographic rev. type); CNG 94, lot 484; CNG 86, lot 621; CNG E-450, lot 128; CNG E-392, lot 264; CNG E-321, lot 99; Gorny & Mosch 176, lot 1279; otherwise, unpublished in the standard references. Toned. EF. Excellent metal. Exceptional for issue, extremely rare thus.