Watch List notes:

SIKYONIA. Sikyon. Circa 360s-340s/330s BC. Obol (Silver, 12 mm, 0.94 g, 7 h). Dove alighting to right; above tail, ΣΙ; below tail, Ο. Rev. Dove flying to right. BCD Peloponnesos 252. A superb piece, beautifully centered. Minor die break above dove's tail on the reverse, otherwise, virtually as struck.
From the "Collection sans Pareille" of Ancient Greek Fractions, acquired from Nomos AG in 2010 (inv. 10653).

A truly exceptional piece - this is one of the rarer variants of the entire series.