Watch List notes:

House of Hohenstaufen (1194-1268), Conrad II (King of Sicily, 1254-1258), Denaro, Messina, 1254-1258; BI (g 0,61; mm 15; h 9); + C SECVNDVS, crowned eagle standing, with open wings and head l., Rv. + IERL ET SICIL' R, cross with pellets in second and third spaces. Spahr 166; MEC XIV, 590; Travaini 56.
Green patina, about extremely fine.