C1580. 2 leaves (4 pages) of antiphon on vellum from a large antiphon. Possibly the Kyrie. Musical notation with accompanying verbal score for a polyphonic chant. In Latin. There is some edgewear to the thick vellum, with a little loss. One small are are to the middle of the page has a slight loss affecting both sides. Overall an attractive piece. A large size, having come from a Gradual of Liber Usalis. Continental. 57cm x 41cm.