Watch List notes:

Attica, Aegina, (490-475 B.C.), silver stater, (11.62 g), obv. smoothed shell sea turtle without row of dots down dorsal spine, rev. "skew" design with five sunken triangle compartments, (S.1858, Asyut Group VII cf.541-5, SNG Cop. 501, SNG Delepierre 1737, cf.Selinus hoard 99-100). Off centred reverse punch, otherwise nearly very fine and rare.

Ex Noble Numismatics Sale 112 (lot 3649) and Sale 70 (lot 3210). Asyut suggests the chronology to be after 485 B.C.
($220-250)