Watch List notes:

ARKADIA. Psophis. Circa 490-460 BC. Obol (Silver, 10 mm, 0.93 g, 7 h). Forepart of the Keryneian Hind to right. Rev. Ο✶ Fish swimming transversely to left with legend above and a rather plump spearhead below; all within a rayed incuse square. BCD Peloponnesos 1664 (this coin). BMC 3 (same dies). Very rare. Lightly toned. Very fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, and from the BCD Collection, LHS 96, 8 May 2006, 1664.