Watch List notes:

ISLANDS OFF ATTICA, Aegina. Circa 445/4-430 BC. Stater (Silver, 20 mm, 11.73 g). Land tortoise with segmented shell. Rev. Incuse square with a skew pattern. HGC 6, 437. Meadows Group IIIb. Old toning. Nearly very fine.
From the stock of an old Swiss dealer assembled mainly in the 1960s-1970s.