Silver tetrobol issued under the Achaean League circa 175-168 BC. Obverse: Laureate head of Zeus right; Reverse: AX monogram, lyre above, ΔΩ - PO in left and right fields; Size: 15mm, 2.27 g; Reference: BCD Peloponnesos 27.1; McClean 6431-2; Benner 4; HN 225 var.; Sear 2971 var.