Watch List notes:

THRACE. Abdera. Circa 492-473/0 BC. Obol (Silver, 8.5 mm, 0.58 g, 2 h). Griffin seated to left, with raised right paw and open jaws. Rev. Head of an eagle to right; all within incuse square. May, Abdera 124, (A104/P102). Very rare. Nicely toned. Unimportant die break on the reverse, otherwise, extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions acquired from Monnaies et Médailles 68, 15 April 1986, 201 for 575 CHF and Nomos FPL 2, 1973, 12.