Watch List notes:

Messina o Palermo, Guglielmo II (1166-1189), Quarto di Tercenario, c. 1166-1189; AR (g 0,50; mm 13; h -); In the center cross in linear circle; around, kufic legend, Rv. qVART / ATERCE / NARII. Spahr 115.
Rare, good very fine.