Watch List notes:

ARKADIA. Mantineia. Circa 420-385 BC. Hemiobol (Silver, 9 mm, 0.37 g, 12 h). Acorn. Rev. ΜΑΝ (, on the left, retrograde) large letter E; to right, small Δ. BCD Peloponnesos 1474 var. BMC 28. Jameson 1263 (this coin). Traité II, 3, 962 var. Very rare. Nicely toned and clear. Minor flan fault, otherwise, good very fine.
From the "Collection sans Pareille" of Ancient Greek Fractions and from the collections of L. Mildenberg, R. Jameson and Consul E.F.Weber, Hirsch XXI, 16 November 1908, 2048.