Bible Encyclopedias
Bull, Single (or Semi)

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

Bull, Single (Or Semi)

Between the time of the pope's election and coronation. the bulla or seal attached to a document issued by him has an impression on one side onlv- viz., the effigies of Sts. Peter and Paul, the reverse being without any stamp. This is called a single or semi bull. After consecration the name of the pope and the date of his reign are stamped on the reverse; this makes the double bulla.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Bull, Single (or Semi)'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​b/bull-single-or-semi.html. Harper & Brothers. New York. 1870.