Medieval lead Papal bulla of pope Gregory XIV circa 1227-1241 AD. 48 g, 37mm. The obverse of the bulla shows the legend GRE/GORIVS/PP.VIIII over three lines within a circular border of pellets. The reverse has the heads of St. Peter (right) and St. Paul (left), facing inwards, both surrounded by a beaded border and separated by a small central cross patonce, with legend SPASPE above. Ref: Collecting Seals. Bryon Pateman.