Watch List notes:

The Robert P Ball Cabinet of Ancient Coins | Calabria, Tarentum, AR Diadrachm, c. 500-490 BC, TARAS in retrograde below Youthful oikist, nude and long-haired, riding dolphin right, holding octopus in his right hand and extending left towards cable border, rev. TARAS in retrograde above Hippocamp left, cockle shell below, 4h (Vlasto 229/115; Fischer-Bossert 31h), some porosity and stress marks, otherwise lightly toned, good fine / very fine, very rare.
Provenance
Bank Leu, by private treaty, 1969 - CHF400
Estimate: $3000 - $4000