Watch List notes:

The Robert P Ball Cabinet of Ancient Coins | Paphlagonia, Sinope, AR Drachm, Aeginetic Standard, c. 425-410 BC, head of eagle left, rev. quadripartite incuse square with opposing quarters filled, pellets within the other quarters, 5.21g, 12h (RG 11; HGC 7, 388 corr. pellets not always present), well-struck and lightly toned on an elliptical flan, a pleasing very fine, scarce.
Provenance
Bank Leu, by private treaty, 1970 - CHF2,450
Estimate: $600 - $1000