Watch List notes:

IONIA. Erythrai. Circa 550-500 BC. Hemiobol (Silver, 8 mm, 0.43 g). Rosette with central pellet-in-annulet. Rev. Rough quadripartite incuse square. Cf. CNG E-Auction 319 (2014), 76 and Naumann 35 (2015), 233. Darkly toned and extremely rare. About extremely fine.