Watch List notes:

WORLD, Italy. Papale (Stato pontificio). John XXIII. Antipope, 1410-1419. PB Seal – Bulla (37mm, 50.50 g, 12h). Bare heads of Sts. Paul and Peter, facing slightly right and left, respectively, each within beaded halo; cruciform scepter between: S PA S PЄ above / • IOhAn/nЄS: PP :. • XXIII : (Ω over PP, triple pellet stops). Serafini 33-5. Pale tan patina. Good VF.

From the Peter J. Merani Collection, purchased from Den of Antiquity.