Fragmentarium link: https://fragmentarium.ms/view/page/F-7oks
The text has become out of order, and should be: ff. 13v-r, 12v-r, 9r-10v, 11r-v.
There is no indication of provenance on the fragment; the catalogue information at Fragmentarium gives a Rheinland attribution. Feasts: Didier of Langres; Gregory; Exaltation of the Holy Cross; Michael; Germanus&Remigius; All Saints; Martin; Brice; Malo. (The pairing of Germanus with Remigius, but not Vedastus, may be a regional peculiarity.) The offices for Didier and Malo contain many unique chants.
The notation is messine on a three-line drypoint staff, with a red F line, faint traces of a yellow c-line, and an A-clef.