Watch List notes:

ACHAIA, Achaian League. Elis. Circa 160-146 BC. AR Triobol – Hemidrachm (14.5mm, 2.39 g, 11h). Laureate head of Zeus right / Monogram of the Achaian League; F to left, monogram above, A to right; below, Γ over thunderbolt; all within laurel wreath. Benner 21; BCD Peleponnesos, 668.2; HGC 5, 537. Toned, obverse slightly off center. VF.

From the Professor Charles Schulz Collection. Ex Coin Galleries (1 June 1979), lot 292.