Watch List notes:

Papal state, Pio V (1566-1572), Bianco, Roma; AR (g 4,89; mm 30; h 12); PIVS IIIII PONT MAX, bust of pope r., Rv. MATER STVDIORVM BONONA, lion l with flag. Muntoni 49, CNI 10.
Rare. Cabinet tone. about extremely fine.