How was a Bulla written?

Once conservation was completed, the unfolded document revealed some additional clues about its history. Careful examination by Dr. Peter Ahr enabled him to identify the type of ink used, distinguish the contributions of several different people who helped to create the document, and discover additional signatures hidden in the bottom fold of the document.

                                                         Oak Galls                                                                                                                       The Ink                                                Many Hands                                      Hidden Signatures