Calabria, Tarentum, AR nomos, ca. 280 BC, "boy on dolphin," mounted in sterling silver bezel with 14K gold prongs and bail with sapphire. 12.59 grams total. Nice full dolphin and horse, lightly toned XF with muted luster. Sapphire in bail is 3mm AAA. With photo-certificate.
Estimate: $350-500