P-G (Guimarães) Arquivo Municipal Alfredo Pimenta N 133
Later-hand inscriptions providing info on the shelf-mark and the contents of the book whose cover is represented by fols. A - B can be read on fol. Arv. Noticeably, there is another later-hand inscription written reversed with respect to the text on fol. Av, 5th text line which seems to refer to some words of the chant erased.
Fols. A - B: Big size neumes. The difference between a lozenge and a more or less square punctum is always clearly defined. The axis of the notation is vertical. The lozenge is randomly used at different heights always as part of compound neumes in a descending melodic movement. The lozenge is not used in isolation.
This fragment belongs to a group of fragments currently held in P-BRs and P-G which share the same style of notation: P-BRs Fragments 1, 3, 10 (fragments 1 and 3 originally belonged to the same codex); P-G C 1372, C 1429, N 133 (fragments C 1372 and N 133 originally belonged to the same codex), N 161 and P 217. From a notational standpoint, the main difference between these sources is the shape of the custos, however, P-G C 1429 and P 217 are too mutilated and today we don't know if custodes were originally written on these sources or not.
Fol. C: square notation on a red tetragram.