Watch List notes:

House of Hohenstaufen (1194-1268), Frederick II (King of Sicily, 1198–1250; King of Germany, 1212-1220; Emperor, 1220-1250), Denaro, Messina or Brindisi, 1225; BI (g 0,80; mm 17; h 12); + F IPERATOR, cross; in quadrants, two trefoils, Rv. + IERL' SICIL' RE, crowned bust l. Spahr 113; MEC XIV, 545; Travaini 27.
Dark patina, about extremely fine.