B-Br II 3823
Les Sources describes the notation as aquitaine. While a certain quality of stacking is present as in Aquitanian notation, other features point to the Rhein-Maas area, or at least toward northern France, particularly the messine stroke before a single note. Thus the l (for Loraine) in the ms type. The presence of feast of transfiguration also echoes the RM tradition around this period. The final folios are very difficult to read on film. Other added sequences may be burried in these folios.