Watch List notes:

Italy, Stato pontificio, Sede Vacante (1268-1271), Grosso Paparino, Viterbo, 1268-1271; AR (g 1,45; mm 20; h 12); + BEATI PETRI, crossed keys of Saint Pietro, Rv. + PATRIMONIV, cross; pellet at end of each bar. CNI 4; Muntoni 1; Berman 162.
Very rare, old cabinet tone, about extremely fine.