A C14th cutting from a Noted Breviary with music on a 4-line stave arranged around a red clef line

A 14th-century cutting from a Noted Breviary with music on a 4-line stave arranged around a red clef line, 158 by 304mm. Germany c.1350 written on vellum in gothic script. Some letters in red, a large initial in blue cropped and another ‘I’ initial in blue on reverse