Watch List notes:

House of Hohenstaufen (1194-1268), Frederick II (King of Sicily, 1198–1250; King of Germany, 1212-1220; Emperor, 1220-1250), Half Denaro, Messina or Brindisi, 1220-1250; BI (g 0,21; mm 10; h -); + IPERATOR, cross, Rv. R EX SICIL, facing crowned eagle. Spahr 108; MEC XIV, -; Travaini 22a.
Rare, cutted flan, cabinet tone, about extremely fine.