Watch List notes:

ELIS. Olympia. 95th Olympiad, 400 BC. Hemiobol (Silver, 10 mm, 0.53 g, 6 h). Eagle's head and neck to right. Rev. Ϝ - Α Thunderbolt, with flames above and volutes below. BCD Olympia 86 (this coin). BCD Peloponnesos 633 (same dies). SNG Copenhagen 376. Extremely rare. Nicely toned, very well centered and unusually nice. Extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions and from the BCD Collection, Leu Numismatics 90, 10 May 2004, 86.