Watch List notes:

ITALY, Papal (Papal state). Callistus III. 1455-1458. PB Seal – Bulla (38mm, 42.51 g, 12h). Heads of Ss. Paul and Peter facing slightly right and left, respectively; between, cross surmounted by globe and set on long base; SPΛ SPE above / +/CALIS/TVS • PP (Ω above)/• III • in four lines. Serafini 45-7. Brown and gray patina. Good VF.