Watch List notes:

ACHAIA, Achaian League. Messene. Circa 175-168 BC. AR Triobol – Hemidrachm (15.5mm, 2.41 g, 3h). Laureate head of Zeus right / Achaian League monogram; monogram above, M below; all within wreath. Benner 14; BCD Peloponnesos 722.8; HGC 5, 596. VF, lightly toned, graffito (Ξ) in field on obverse, slightly off center and tiny deposits on reverse.

From the J. Cohen Collection. Ex Gorny & Mosch 229 (10 March 2015), lot 136.