Papal bull

Papal bull of Pope Urban VIII, 1637, sealed with a lead bulla
The apostolic constitution Magni aestimamus issued as a papal bull by Pope Benedict XVI in 2011 which instituted the Military Ordinariate of Bosnia and Herzegovina

A papal bull is a type of public decree, letters patent, or charter issued by a pope of the Catholic Church. It is named after the leaden seal (bulla) traditionally appended to authenticate it.