Watch List notes:

House of Hohenstaufen (1194-1268), Grosso, in name of Frederick I, 1155-1312, Pisa, Repubblica, 1194-1216; AR (g 1,41; mm 17; h 6); + IMPERATOR, in field, large F, Rv. + CIVITAS, in field, PISA, around a pellet. CNI 7; MIR 393.
Rare, dark patina, extremely fine.