Watch List notes:

GREEK COINS
ATTICA

Athens. Circa 545-525/15 BC. Obol (Silver, 7mm, 0.66 g). Wheel with central boss, four spokes and struts. Rev. Diagonally divided incuse square. Agora 4. Seltman pl. IV, ξ. Svoronos pl. 1, 60. Rare. Well struck and clear. Lightly crystalized surfaces, otherwise, nearly extremely fine.

From a European collection, formed before 2005.