Watch List notes:

Sicily, Onkia, Katane, c. 405-402 BC; AE (g 0,78; mm 8; h 6); Head of river god l. with horns and floating hair; at l., [AMENANOΣ], Rv. [K-A], winged thunderbolt. CNS III, n. 2; SNG Copenhagen -; SNG ANS 1272 var.
Very rare, green patina, extremely fine.