Watch List notes:

ARKADIA, Arkadian League. Mantineia. Circa 462-428 BC. Obol (Silver, 10 mm, 0.97 g, 6 h). Zeus Lykaios seated to left on throne, holding eagle on his outstretched right hand and scepter with his left. Rev. Head of Kallisto to right, with her hair in a roll and wearing a pearl necklace. BCD Peloponnesos -. Jameson 1274 = Traité II, 3, 864 and pl. CCXXIII, 37 = Williams 267 b (O.73/R. 173, this coin). Rare. Well-centered and toned, and with a splendid reverse. Obverse struck from a worn die, otherwise, very fine/about extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions and from the collection of R. Jameson.