Uncertain mint in Central Etruria.   50 units late 4th-3rd century BC, Æ 24.33 g. Bearded head r., wearing Ketos head-dress; behind, [arrow up]. Rev. Incuse eagle standing r., looking backwards at coiled serpent standing on its back. SNG ANS 71 (these dies). AMB 20 (these dies). Vecchi 3.4 (this coin). Historia Numorum Italy 78.
Of the highest rarity, four specimens known of which only two are in private
hands. Brown-green tone and about very fine

Ex CNG sale 87, 2011, 113.