Watch List notes:

The Robert P Ball Cabinet of Ancient Coins | Sicily, Akragas, AR Didrachm, c. 510-495 BC, sea eagle standing left, AKRAS to right, ANTOS in retrograde to left, rev. crab, 8.84g, 3h (Jenkins Group Ia; HGC 2, 87; Westermark 34.10 same dies) minor striking split and tiny metal stresses, otherwise neatly centred, very fine, the reverse pleasingly so, rare.
Provenance
F Sternberg, by private treaty, 1966 - CHF440
Estimate: $1400 - $2000