Watch List notes:

ACHAIA, Achaian League. Patrai. Circa 175-168 BC. AR Triobol – Hemidrachm (15mm, 2.26 g, 3h). Laureate head of Zeus right / Achaian League monogram; Δ to left, I to right; below, trident right; all within laurel wreath. Benner 19; BCD Peloponnesos 502; HGC 5, 53. VF, toned, minor roughness, die shift on obverse.

From the J. Cohen Collection. Ex Gorny & Mosch 229 (10 March 2015), lot 1307.