Watch List notes:

CALABRIA, Tarentum. Circa 240-228 BC. AR Nomos (20mm, 6.43 g, 2h). Reduced standard. Dioskouros, head facing, raising right hand and holding rein in left, on horse stepping left / Phalanthos, nude, head and torso facing, holding trident over shoulder in right hand, and lifting drapery with left, riding dolphin left, waves and cuttlefish below. Vlasto 955–7; HN Italy 1058. Toned, areas of porosity. In NGC encapsulation 5872733-100, graded Ch XF, Strike: 4/5, Surface: 3/5. A very rare type, with a superbly engraved and struck facing horseman.

From the Robert W. Bartlett Bequest Sold for the Benefit of the American Numismatic Society. Ex New England Rare Coins Auction (25 March 1982), lot 2.