Two partial leaves, probably the outer bifolium from the first gathering, from an 11th-century Sacramentary, repurposed as pastedowns at the front of the incunabulum X 525, an edition of the Modus legendi from 1494. The leaf used as the back pastedown was the first leaf of the original codex and has been pasted with the verso to the board; to the recto, originally blank, was added in the thirteenth century part of liturgy for Good Friday.