Watch List notes:

Sicily, The Mamertinoi, Bronze, c. 220-200 BC, Ae (g 5,63; mm 18; h 6), Laureate head of Zeus r., dotted border, Rv. MAMEPTINΩN, Hermes standing l., holding patera, caduceos and chlamys; at l., ram. CNS I, n. 36; SNG Copenhagen 457; SNG ANS 437.
Very rare, green patina, about extremely fine.