Document Metadata
The four bifolia seem to comprise an entire quire containing the Canon of the Mass, along with musical notation for the Pater Noster prayer and instructions for the celebrant.
Download this page
Scherpenheuvel-Zichem, Abdij der Norbertijnen van Averbode, Archief, Sectie IV, hs. 417, 11, fol. [2]v – Noted missal — https://fragmentarium.ms/view/page/F-gybf/7120/69800/180