Watch List notes:

WORLD, Italy. Papale (Stato pontificio). Sixtus IV. 1471-1484. PB Seal – Bulla (38mm, 39.92 g, 12h). Heads of Ss. Paul and Peter facing slightly right and left, respectively; between, cross surmounted by globe and set on long base; S S/ P P/ A E above / +/ SIXTVS/ • PAPA •/ • IIII •. Serafini 127-30. Pale gray sufaces. VF.

From the Peter J. Merani Collection. Ex Classical Numismatic Group Electronic Auction 401 (12 July 2017), lot 628.