Greek Italy. Etruria, Cosa. AE Quartuncia, c. 273-250 BC. Obv. Bearded head of Mars right, wearing crested Corinthian helmet. Rev. CO[SANO]. Bridled head of a horse right, resting on a dolphin. HN Italy 210; SNG Cop. -; Vecchi EC 1. 7.31 g. 20 mm. RR. Very rare, with nice green patina. VF.