This single parchment folio, likely from a liturgical manuscript produced in the Lower Rhine during the 12th or 13th century, contains chants for the feasts of St. Dionysius, St. Gereon, and the Theban Legion. Written in Latin minuscule in two columns, the text is accompanied by adiastematic neumes. A later hand added a Middle Dutch note on the recto alongside fragmentary Latin. The fragment preserves multiple antiphons and responsories, including material for Vespers and the Invitatory.

• Paul Feller-Simmons, DACT, 2025
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