Watch List notes:

MACEDON. Mende. Circa 510-480 BC. Tritartemorion (Silver, 7.5 mm, 0.47 g). Head of an ass to right, pellet on his neck; border of dots. Rev. Millsail incuse square, divided into four raised and four sunken compartments. Bérend, Réflexions p. 30, 16 and pl. 2, 16 (this coin). SNG ANS 307. Well-struck and toned. Remains of corrosion, otherwise, about extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, and from the collection of Leo Mildenberg.