A Papal Bull by Sixtus IV (or IIII as it’s rendered here), 1471. This particular document appoints a
A Papal Bull by Sixtus IV (or IIII as it’s rendered here), 1471. This particular document appoints a church official to an important post. These documents get their name from the lead seal (bulla) that verified its authenticity.{WHF} {HTE} {Medium} -- source link
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