Ms. sacramentary, for the Roman rite in a Benedictine monastery; written and illuminated at Mont-Saint-Michel Abbey, in Normandy, ca. 1060.
Forty-five leaves from this manuscript are held in the Bibliothèque municipale in Rouen (MS 116).
Musical notation: primitive neume notation of northern France throughout the manuscript.
Decoration: 12 full-page miniatures and decorative panels; 4 half-page miniatures; 11 panels with decorative initials, 7 smaller historiated initials.