Watch List notes:

ACHAIA, Achaian League. Megalopolis. Circa 167-146 BC. Triobol or Hemidrachm (Silver, 14 mm, 2.41 g, 12 h). Laureate head of Zeus to right; below, [ΒΞ]. Rev. Achaian League monogram; to left and right, K-I; above, Ξ; below, syrinx; all within laurel wreath. BCD Peloponnesos 1550. Benner 15. Very fine.